Singer Friden EC1114 - Nixie Tube Calculator - Part Two - Demo GrumpyTim 2023-04-08 | In the last video I repaired this 1969 (or thereabouts) Singer Friden calculator with a Nixie Tube display. In this video I'll demonstrate finished calculator, showing the basic mathematics functions plus a few of it's more quirky features. This Singer Friden calculators was made in Japan by Hitachi, and there would also have been a Hitachi branded model available.We'll answer the all important question, "what happens if you divide by zero?" and at the end of the video I'll take a closer look at those beautiful nixie tubes.You can see Part One here:youtu.be/Er1KOhYKkHUand the two videos featuring the Hitachi KK561 here:Hitachi KK561 Part One youtu.be/QzARPqaYDFAHitachi KK561 Part Two youtu.be/veGG21VtrPMStart 00:00General look 00:21Demo start 00:43Multiplication and division 02:39Rounding 04:44Constant multiplication 05:22Reverse key 06:25Sigma Summation 07:01Divide by zero 08:00The Singer connection 08:38Nixie tubes 08:59Outro 09:48If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Mamiya Sekor 500 DTL - a bit of a brick, but actually quite good GrumpyTim 2024-09-29 | Although I'd been aware of Mamiya medium format cameras as long as I can remember, it wasn't until I got interested in film cameras again, after shooting digital for many years, that I found out about their 35mm film cameras like the 500 DTL featured in this video. The 500 DTL and it's siblings such as the 500 TL, were introduced in the mid to late 60s in Japan. They're relatively basic SLR cameras but actually rather nice to use and very solidly built.Start 00:00History 00:31Features and Controls 02:40Gallery One 08:33Repairs 09:44Gallery Two 11:18Summary 12:34Outro 13:39Here are some of my other videos that you might like:Wolfen NC500 film overexposed by one stop youtu.be/lq81UF_CcBACosina CSL youtu.be/cooT4t8B74cCanon T50 youtu.be/IkW83aTBqSIIf you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comGallery Music"Fallout Zone"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Cosina CSL & CSM - All The Mod Cons For Your M42 Lenses GrumpyTim 2024-09-11 | The Cosina CSL, CSM & CSR were introduced in the late 70s as relatively affordable SLR cameras that offered technical advances such as electronic shutter timing, yet retained the M42 screw mount for your lenses. Cosina often made products for other brands, and these models were no exception, also being sold as the Porst Compact Reflex and the Vivitar XC-3. The camera even offered aperture priority auto exposure, albeit that you needed a little extra gadget to achieve this - the Cosina AEC Adapter, which sat on the hot shoe and physically moved the shutter speed dial when you half pressed the shutter button.Here are some of my other videos about less talked about cameras:Miranda Automex III youtu.be/LBV7tLE7qvQTopcon IC-1 Auto youtu.be/ZmffMF0650kCanon T50 youtu.be/IkW83aTBqSIYashica FR1 youtu.be/0AQwiJQ_cAYStart 00:00History & Features 00:15Controls 02:43Loading a Film 07:57Viewfinder 09:34Gallery 10:22The AEC Adapter 11:42Yashinon 50mm Lens 14:28Repairs 15:06Outro 16:49If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comGallery Music"Fallout Zone"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
ORWO Wolfen NC500 - Take Two - The 200 ISO Roll GrumpyTim 2024-08-22 | When I first saw the unedited scans from my first roll of Wolfen NC500 I was tempted to throw the second roll in the bin - everything was incredibly dull, with no detail in the shadows and very obvious grain, however, once I'd calmed down and done a little editing, I began to like some of the images from that roll. I'd already done my research and seen that people recommend not underexposing the film, but that's how I usually work with most film stocks, metering for the dull areas rather than simply pointing the camera at my subject and shooting. I kept hold of the second roll, waiting for brighter weather and I also decided that I'd rate the film at 200 ISO rather than the box speed of 400 ISO - the results are much more satisfying, and I'm now satisfied that I can use this film again in the future.You can see some of my related videos using the links below:Wolfen NC500 the first roll youtu.be/FqOqrhJbZkUCanon T50 youtu.be/IkW83aTBqSIHarman Phoenix youtu.be/hyYgQ7CPxgIWhen Phoenix Met Lensbaby youtu.be/3d8YcFkxEdoStart 00:00Gallery One 01:38Shooting at 200 ISO 02:49Gallery Two 04:06Summary 05:45Outro 07:02Oh, and in case you're interested, the military vehicle show that featured in many of the photos is "Wartime In The Vale" which takes place in Evesham UK every year - it's very good, and you don't have to be a military enthusiast, just having an interest in old stuff will do.If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comGallery Music"Fallout Zone"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Nikkormat FTN - Surprisingly Good GrumpyTim 2024-08-01 | The Nikkormat seems to be the forgotten Nikon SLR film camera from the 1960s and 1970s, people are always talking about the Nikon F in it's various versions but rarely about the Nikkormat. I got my Nikkormat FTN for a bargain price, and since then I've seen plenty more copies being sold at similarly good prices. It's understandable at the time that professional photographers would want some of the extra features offered by the more expensive Nikon F, but nowadays when people are largely buying film cameras to use as a hobby camera it's a bit of a surprise that the Nikkormat doesn't see a bit more of the limelight.Start 00:00History 01:49Fitting The Lens 03:12Controls & Features 04:32Loading A Film 08:05Viewfinder 10:09Gallery One 10:56Copal Square Shutter 11:59Gallery Two 13:09Summary 14:28Outro 15:15Some other videos you might like:Nikon F-501 youtu.be/DqeYV4fQ4RoYashica FR-1 youtu.be/0AQwiJQ_cAYCanon Canonet Mk1 youtu.be/o9_G1TlroPIIf you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comGallery Music"Fallout Zone"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Canon T50 - Excellent Budget Film Camera From The 80s GrumpyTim 2024-07-05 | The Canon T50 was their entry level "T" Series SLR camera from the 1980s, and must have proved highly popular because it was in production from 1983 to 1989. Often overlooked nowadays, these "stylish" (stylish in 80s terms anyway) cameras from the mid 80s can offer excellent performance at a relatively low cost, and they're great fun to use too, so long as you don't want to be discreet, because the motor winds do tend to draw attention!!!In the video we'll look over the camera and it's controls, before browsing through some shots taken on a roll of outdated Fuji Superia 200 film.You can see my previous rolls looking at the Nikon F-501 here:Nikon F-501 Demo youtu.be/DqeYV4fQ4RoNikon F-501 Test Shots youtu.be/oIHQwzLx96EF-501 + Harman Phoenix + Lensbaby youtu.be/3d8YcFkxEdoStart 00:00Features And Controls 02:19Auto Exposure Lock 03:58Installing A Film 04:53Viewfinder 06:13Shooting Outdated Film 07:42Gallery 1 08:43The User Experience 09:58Gallery 2 11:22Summary 13:00Outro 14:09If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comGallery Music"Fallout Zone"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Yashica FR1 - 10 years ahead of the competition!!! GrumpyTim 2024-06-14 | While browsing through an old copy of Practical Photography magazine, I spotted an advert for a Yashica FR1, claiming that is was 10 years ahead of the competition. Intrigued by this claim and also interested that it shared much of it's technology with the more expensive Contax RTS (built by Yashica for Contax), I got myself an FR1 to try out, and I wasn't disappointed.The FR1 was introduced somewhere around 1977 and features an electronically controlled shutter and a good metering system, the Contax/Yashica bayonet lenses tend to be cheaper than many other systems these days, making it quite an attractive proposition.There seems to be one common failure with the FR1 - the frame counter, which suffers from a split nylon gear. I show a little of how I repaired this during the video, but you could use the camera without a functioning counter just the same.Here's a link to my previous video looking at Kodak Vision 3 500T film:youtu.be/oIHQwzLx96Eand here's a link to the Photography Show website in case you're interested in visiting next year (I think it's moved to London for 2025):photographyshow.comStart 00:00Features and Controls 01:06Battery 04:27Viewfinder 04:46Loading a Film 05:34Gallery 1 06:26Frame Counter Repair 07:30Gallery 2 09:32Summary 10:53Outro 11:58If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comGallery Music"Fallout Zone"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Harman Phoenix - Test Roll 2 - Film Photography With A Lensbaby GrumpyTim 2024-05-30 | Having enjoyed the bold and punchy look of my first roll of Harman Phoenix, I wanted to try something a bit more adventurous to embrace all that colour and contrast. So I attached my Lensbaby 3G to my Nikon F-501 and headed out to try and capture some of those magical Lensbaby images. As with the first roll of Harman Phoenix, I overexposed the film, shooting at 125 ISO instead of the box speed of 200 ISO.You can see my previous video looking at Harman Phoenix here:youtu.be/hyYgQ7CPxgIThe Lensbaby 3G was the third generation of Lensbaby, still essentially a lens mounted on a bit of flexible pipe, but with the addition of some locking rods so you could hold your focus and bend while using the lens on a tripod. I think Lensbaby revisited the general design of the 3G when they introduced the Control Freak a few years later - I think the Control Freak uses the optic swap system lenses, as found in the Lensbaby Composer, but from what I can see, even the Control Freak has been dropped now.You can see some of my related videos below:Harmon Phoenix youtu.be/hyYgQ7CPxgINikon F-501 youtu.be/DqeYV4fQ4RoKodak Vision 3 500T on Nikon F-501 youtu.be/oIHQwzLx96EI also did a video a few years ago looking at Lensbaby lenses - it might not be quite so well put together, and the voiceover might be terrible, but the link is below!!!youtu.be/1cz45Q3KDbAStart 00:00Lensbaby 3G 00:28Sample Gallery 1 02:27Lensbaby Apertures 03:54Sample Gallery 2 05:28Summary 07:06Outro 08:15If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comGallery Music"Fallout Zone"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Kiev 4 Rangefinder Camera - Curing Light Leaks GrumpyTim 2024-05-19 | In the last video looking at my 1975 Kiev 4, Soviet made Rangefinder Camera, I wasn't very impressed with the build quality, or the sharpness of the Jupiter 8M lens, and after having the first test film developed, I noticed that there was a small light leak. I'd already shot a second roll by that time, but that roll hadn't yet gone to the lab for processing. The second roll was also shot on Ilford FP4 but this time I'd pushed it one stop to 250 ISO, and as you'd expect with a more sensitive film, the light leak showed up more. So it was time to take the camera apart again in an attempt to cure the light leak once and for all. I found several potential leak areas although the main suspect is in the area of the sprocket drive gear shaft.I'll put a link here to the follow up video (assuming I make a follow up) to see if the leak has successfully been cured.In the meantime, here's a link to the first video featuring the Kiev 4:youtu.be/ermmF7FPjaUStart 00:00Light Leaks 00:57Tracing the light leaks 01:44Light Seals 05:06Disassembly 06:06Summary 09:09Outro 09:56If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Harman Phoenix shot at 100 ISO - Any Good? GrumpyTim 2024-05-01 | I was quite excited when Harman released their brand new colour film "Harman Phoenix" in December 2023, but I wasn't quite fast enough off the mark to get my hands on some at the time. It took me until March 2024 to get a couple of rolls, so here, slightly late for the party, are my thoughts and results after shooting the first roll.Harman are better known for producing Ilford Black & White films, but they also already make Kentmere Black & White under the Harman brand, so the new Phoenix film sits nicely along side that.Harman say the film can be shot anywhere between 100 and 400 ISO, but the box speed is set at 200 ISO. I opted to shoot my film at 100 ISO to avoid muddy shadow areas as much as possible.You can see my previous videos looking at other film stocks below:ORWO Wolfen NC500 youtu.be/FqOqrhJbZkUKodak Vision 3 500T youtu.be/oIHQwzLx96EHarman Phoenix with Lensbaby 3G youtu.be/3d8YcFkxEdoStart 00:00Harman / Ilford 01:25Cosina CSL 02:17ISO 02:52Gallery 1 03:18Initial Impressions 04:00Gallery 2 05:29Light Piping 06:29Halation 06:51Scanning 07:13Final Thoughts 07:40Outro 08:26If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Where Was I Going"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Kiev 4 Rangefinder Camera - Not Quite What I Expected!!! GrumpyTim 2024-04-11 | In this video we'll take a look at my 1975 Kiev 4 rangefinder camera. The Kiev was a copy of the German Zeiss Contax camera produced in Kiev, Ukraine. The Kiev cameras are lovely things to look at, and according to many people are higher quality than other Soviet made rangefinders such as the Zorki and FED cameras, but the 3 Zorki's that I have in my collection appear to be better built than my Kiev 4.Although it might seem like I'm not happy with my Kiev 4, I think I probably just had over inflated expectations having seen many people sing it's praises, and it just didn't quite live up to the hype, but having filmed this video I'm all eager to try it again - I've quadruple checked for light leaks, tweaked the rangefinder yet again and will hopefully head out with it again soon, at least as soon as I've finished some of the 15 or so films that I currently have in other vintage cameras.Film used: Ilford FP4 shot at box speed (125 ISO)You can see the follow up video where I investigate the light leaks here:youtu.be/KEniYBPF7jEHere are some links to previous videos that I mentioned in this video:Industar 61 Lens Test youtu.be/y_83-v-XxJ0Jupiter 8M Lens Test youtu.be/glF0Ui7OikQStart 00:00Contax/Kiev History 00:46Lenses & Focusing 01:30Controls 04:48Viewfinder 08:42Gallery 1 10:19Problems 11:31Gallery 2 13:37Summary 14:33Outro 15:13If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Where Was I Going"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Shooting Kodak Vision 3 500T Movie Film in my Nikon F-501 GrumpyTim 2024-03-21 | Following on from the last video where we looked at a Nikon F-501 from the 1980s, this time we'll look at the shots taken on the camera using a roll of Kodak Vision 3 500T tungsten balanced motion picture film. These motion picture film stocks were never intended to be used in stills cameras, but they produce some very interesting results, albeit with a few potential drawbacks which I'll talk about in the video.You can see the previous video featuring the Nikon F-501 here:youtu.be/DqeYV4fQ4Ro...and another previous video looking at Orwo Wolfen NC500 film here:youtu.be/FqOqrhJbZkUStart 00:00What is Vision 3 film? 00:18Cameras & lenses used 03:52Gallery 1 04:36Colour correction 05:45Gallery 2 07:04Summary 08:07Outro 08:48If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Where Was I Going"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Nikon F-501 / N2020 - 80s Icon Complete With Electrical Gremlins GrumpyTim 2024-03-15 | In this video we're taking a look at the 1980s Nikon F-501 also known as the Nikon N2020 in some countries. The sibling Nikon F-301 (aka Nikon N2000) will also make a few appearances as the cameras were largely identical, the F-501 just having the addition of autofocus and an additional program mode.There were a few issues with electrical gremlins on all 4 examples that I've got my hands on, although many of these could have been avoided if old batteries hadn't been left to rot in the battery compartments.I'll do a separate video looking at the shots taken on the F-501 using a roll of Kodak Vision 3 500T (tungsten balanced movie film), but there are a few examples at the end of this video.Start 00:00The pains of buying used cameras 01:24Spare F-501 and F-301 bodies 05:47Overview and controls 06:39Auto & Program modes 12:48Batteries 14:09Viewfinder 14:48Loading & unloading film 17:35Sample shots 19:02Outro 19:52If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Where Was I Going"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
The Watkins Bee Meter - Early 1900s Photographic Exposure Meter GrumpyTim 2024-02-26 | I was recently given a Watkins Bee Meter as a present (I'd been looking for one for a while), and it's such a cool gadget I thought I'd do a video about it.The Bee Meter was invented by Alfred Watkins in the late 1800s, and continued in production until electronic meters took over. The Bee Meter uses light sensitive paper to measure the strength of the light - even in bright sunlight it will take a few seconds to darken to the same shade as a control strip next to the test strip in the measuring window - by counting how many seconds it takes and applying that figure to the exposure calculation dials, you can quickly (well relatively quickly for the time anyway) and accurately measure the correct shutter speed to set on your camera.Start 00:00History and Documentation 00:09General Overview 01:12How to use the Bee Meter 03:41Reading the Meter 05:15Low Light Readings 06:26Additional Info 07:22Outro 08:07You can see a previous video where I looked at a Sekonic Marine Meter here:youtu.be/sBn16KQLKp4If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Vintage Camera Repairs - Work In Progress & New Arrivals GrumpyTim 2024-02-15 | I couldn't do the video that I had planned for this week, so I thought I'd just show a few of the work in progress cameras along with some new arrivals and recently repaired cameras (and lenses). This will just be a very brief glimpse at each of the cameras, and it definitely won't be a "how to" style video.Hopefully I'll be back in a week or two with the planned video looking at the results from a roll of Kodak Vision 3 500T film that I put through my Nikon F-501 recently.Start 00:00PetriFlex 7 00:30Miranda Sensomat RE 00:52Exakta RTL1000 01:19Fujica ST605N 01:38Rolleiflex SL35 02:06Praktica IV B 02:30Praktica FX2 03:05Hanimex 35mm f2.8 Lens 03:51Yashica 635 TLR 05:21EXA 06:21Outro 07:08If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
ORWO Wolfen NC500 - Shooting a New Film Stock GrumpyTim 2024-02-01 | Towards the end of 2023 my local photo lab began stocking ORWO Wolfen NC500 35mm colour film, which is a relatively new film stock from ORWO who are based in Wolfen, Germany. Wolfen NC500 promises enhanced grain, desaturated shadows and a different colour pallet compared to the more common offerings from Kodak. It won't be to everyone's taste, it's quite a difficult film to get the best results out of - I'll definitely need to try a few more rolls to increase my "good shots" to "bad shots" ratio, but it's always exciting trying out different film stocks, whatever the results.Start 00:00History 00:13Film Details 01:38Gallery One 03:00Test Results 04:18Gallery Two 06:39Summary 07:55Outro 08:50Since making this video I've shot more rolls of NC500 rating the film as 200 ISO rather than 400, which has given much more satisfying results - you can see examples in the follow up video:ORWO Wolfen NC500 Take Two youtu.be/lq81UF_CcBAIf you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Fallout Zone"by Grumpytim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
1944 Model M6 Tank Periscope GrumpyTim 2024-01-26 | We have a slightly different bit of optical equipment for this video, a 1944 tank periscope, model No. M6, made by "Minneapolis - Honeywell Regulator Company" aka Honeywell, for the US military. Possibly fitted to a Sherman or Stuart tank, or probably any other armoured vehicle of the period.As with much military equipment, this periscope was designed to be solid and easy to service, with simple latches to remove and replace the mirror sections, and a single knurled knob to attach it to the bracket in the tank - no special tools required.Addendum: There were a couple of things puzzling me while I was shooting this video, one thing was the end that I "thought" was the top, slotted inside the body of the unit, whereas the end that I "thought" was the bottom, had a flange that overlapped the body - it would make much more sense if the unit was the other way round, with the overlapping mirror unit exposed to the outside to stop water penetrating. The second thing was the handle that someone told me hooked over some sort of bar - looking again, I think this is purely a handle, and the whole unit is pulled downwards into the tank and a replacement pushed back up into the bracket and locked in place with the knurled knob. So when you watch the video, just visualise the whole think the other way round and it'll all make more sense.Start 00:00How it works 00:35Installation 01:23Mirror Units 01:50Markings 02:24Outro 03:19BSA Charging Set part 1 youtu.be/w61NfGX7GfUBSA Charging Set Part 2 youtu.be/KtZiVAtcHOEBSA Charging Set Part 3 youtu.be/8OdnbHAL3nwIf you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Vintage Camera Repairs - Some Tools for Fixing Old Cameras GrumpyTim 2024-01-19 | I was in the middle of fixing a Petri Flex 7 SLR camera from the 1960s and I thought it might be interesting to make a video showing some of the tools I use for camera repairs. Most of these are common tools such as screwdrivers and tweezers, along with a few fairly common specialised tools like a lens wrench, but I figured the most interesting tools might be the custom made tools for specific tasks on a particular camera. That all sounds very glamorous, but they're mostly bits of scrap materials that I have lying around that I've just converted using basic tools. The electronic shutter timer that my brother and I made is definitely the most elaborate item in the video.Start 00:00Basic Tools 00:19Lubrication 03:36Specialist Tools 04:17Custom Made Tools 05:38Ground Glass & Focusing 08:13Shutter Timing 09:03Outro 11:26If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Sekonic Marine Meter II - Waterproof Exposure Meter GrumpyTim 2024-01-12 | In this video we'll take a look at a Sekonic Marine Meter II, model No. L-164C (or at least I think that's the correct model number). The Marine Meter is a waterproof exposure meter, or light meter if you prefer, designed specifically for underwater photography, although it will work perfectly well above the water too. My version of the meter was probably made in the 80s or 90s, but finding out exact information about these meters is a bit difficult - there's no references to them in any of my old camera magazines.When I first uploaded this video, a regular viewer pointed out that the zinc air cells can produce quite a bit of gas (Hydrogen), which could potentially cause a problem if they were sealed inside the casing of the meter (I've since added a section to the video and re-uploaded it) - I suspect once the pressure had built up, the big seal round the front glass (plastic) would move slightly and let the pressure escape (that seal being designed to withstand inward water pressure not a build up of gas from inside the unit), but it would probably be wise to remove the battery from this meter after use, or, if you're not using it for diving, leave the "O" ring out when you fit the battery hatch. I'll put a link to one of Big Clive's videos below, where he does some experiments with zinc air batteries and the gas they produce.Big Clive's video youtu.be/TNjPHkfk1-Q?si=QYVJiM9xKl97YbErStart 00:00General Overview 00:55Controls 01:56Batteries 02:45Using the Marine Meter 04:26Weston Master III 04:56Sekonic L-308S 05:33Extras 06:02Outro 06:25If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Minori - Vintage Mechanical Camera Shutter Self Timer GrumpyTim 2023-12-30 | In this short video, we're taking a look at a Minori mechanical camera shutter self timer. Back in the days of mechanical film cameras, many of them had a self timer function, allowing you to delay the triggering of the shutter long enough to include yourself in a group shot and so on. But not all cameras had this feature, so a number of manufacturers produced clockwork self timers that simply screwed into the cable release socket, allowing you to delay triggering the shutter on such cameras. These devices can also be useful nowadays, as many integrated self timers have got sticky with age and no longer work - if you don't fancy stripping the camera down to clean and re-lubricate the integrated timer, these after market devices could be the solution.More of my usual longer videos coming soon...ishStart 00:00Other Uses 00:16Cable Release 00:56Mechanical Self Timer 01:20How To Use 01:38Demonstration 02:38Summary 03:28Outro 03:52If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Canon Canonet Mk1 - 1960s Rangefinder Camera GrumpyTim 2023-12-23 | In this video we're taking a look at my 1961 (or thereabouts) Canon Canonet rangefinder camera. My copy was a bit of a wreck when I first got it, but I couldn't resist the temptation of fixing it and putting it to use again.The Canonet was introduced in 1961 with the first version (like mine) having a Selenium cell exposure meter and no indication of the selected aperture in the viewfinder. Versions of the Canonet continued to be produced right into the early 80s.The film used for the test shots in the video was Kentmere 100 ISO.Start 00:00Repairs 00:52History & Models 02:57Gallery 1 04:16Controls & How to use 05:17Loading Film 11:32Gallery 2 13:07Summary 14:37Outro 15:34If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Acoustic Typewriter"by GrumpyTim (available to download from GrumpyTim's Bandcamp Page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Voigtlander Bessamatic - 1950s Film Camera - Repaired and Shooting Film GrumpyTim 2023-11-17 | The Voigtlander Bessamatic was a 35mm SLR camera, first introduced in the late 50s, although my version may well date from somewhere in the 60s. The camera has a Synchro-Compur leaf shutter and utilises a version of the DKL lens mount.My example, like most of the cameras I get hold of, was in need of a service before it was ready to take shots - I'll touch on the repairs required during the video, but this definitely isn't a "how to repair" video.There'll be sample shots taken on the camera - the film was Kentmere 100 ISO Black & White film.Start 00:00History 00:50Camera Overview and Controls 01:34Filter Corrections 06:22Frame Counter 07:03Loading a Film 08:22Gallery One 09:50Faults and Repairs 11:22Gallery Two 14:12Summary 15:24Outro 15:52If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Bright Lights"by GrumpyTim (available to download from GrumpyTim's Bandcamp Page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Topcon IC-1 Auto - 1970s Film Camera - Shooting Outdated Film GrumpyTim 2023-10-29 | I got this Topcon IC-1 Auto as part of a job lot of film cameras, I quite liked the look of it, so I rushed it onto the repair bench and got it up and running - I also got a roll of outdated Kodak Gold 200 ISO film that had been jammed in a Praktica camera and never used, so I figured I'd put the two together to see how they performed. There is a bit of a risk using unknown old film - if it's been stored well, it can keep for years, but if someone has kept it next to a radiator for 20 years, it might not be much good at all.I really enjoyed using the IC-1 Auto, so much so, so much so that I broke my golden rule of only shooting one film before examining the results - as it happens, one of the shutter curtains is dragging a little bit, so I will be doing a full strip down once I've finished the current roll of film, luckily it's not too serious, and the shots are more or less fine.Film used in the Topcon: Outdated Kodak Gold 200 shot as 50 ISOStart 00:00History & Model Variants 00:38Camera Details 01:50Faults & Repairs 02:36Controls 03:52The Outdated Film 06:48The Gallery 08:10Summary 11:05Outro 11:38If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Fallout Zone"by GrumpyTim (available to download from GrumpyTim's Bandcamp Page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Miranda Automex III - A Forgotten Gem from the 1960s GrumpyTim 2023-08-29 | Many people will remember Miranda cameras in the 1980s, by which time they were just rebadged cameras from another manufacturer (I think it was Cosina or something like that), but back in the 60s, Miranda were actually manufacturing some really nice cameras such as the Automex III featured in this video.My particular copy of the Automex III was in pretty bad shape when I first got it, due to battery leakage and poor storage conditions, but after a considerable amount of work I now have a fully functional camera to use and enjoy.In the video I'll demonstrate the camera and it's controls, talk a little about the repair process and show sample shots taken using the camera.Film used in the Automex III: Ilford FP4 125 ISOThe other videos I referred to in the video can be found here:Zeiss Ikon Contaflex Super B youtu.be/qjHtkmAgFrcEdixa Reflex youtu.be/LD8PIpIBNsYStart 00:00Miranda Cameras 00:04Miranda Automex Cameras 01:03Features and Controls 03:20Gallery 1 07:10Loading & Unloading Film 07:56Gallery 2 09:51Faults & Repairs 10:26Gallery 3 14:41Summary 15:42Outro 16:20If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Acoustic Calculator"by GrumpyTim (available to download from GrumpyTim's Bandcamp Page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Wirgin Edixa Reflex - Still Shooting Black & White Film in 2023 GrumpyTim 2023-08-04 | In this video we're taking a look at an Edixa Reflex camera, made by Wirgin in Wiesbaden, Germany somewhere around 1956. Details of exactly which model my camera is appears to be a bit sketchy - it might be a Model II, or a Model A, but the original instruction manual just says "Edixa Reflex", so maybe it was the first generation and didn't have any other model number.The Edixa Reflex features a removable viewfinder, giving the choice of a prism or a waist level viewfinder as seen on my example. The lens mount is the pretty common M42 screw mount, my example being fitted with a 50mm Steinheil Munchen Cassar S f2.8There were a few repairs to do on this camera when I first got it - I'll briefly cover these, but this isn't a repair video as such.Film used in the Edixa: Ilford FP4 125 ISOHere are links to a couple of my other vintage photography related videos:Zeiss Ikon Contaflex Super B youtu.be/qjHtkmAgFrcHelios 28mm f2.8 lens youtu.be/aZWal7MhlRIStart 00:00Camera Info and History 00:27Camera Features and Controls 01:10Viewfinder 03:32Changing a Film 05:11Gallery 1 06:50Repairs 07:44Gallery 2 10:19Using the Edixa Reflex 11:03Gallery 3 13:18Summary and Outro 15:10If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Where Was I Going"by GrumpyTim (available to download from GrumpyTim's Bandcamp Page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Vintage Camera Repair - Ihagee EXA 500 - Slow Speed Shutter Timer & Tessar Lens GrumpyTim 2023-07-13 | In this video I'll take a look at a 1967 EXA 500 film camera (also sold as the Exakta 500), made by Ihagee in Dresden, Germany. There are a few faults with the camera, the shutter curtains are dragging, so the rollers that they run on need cleaning and oiling, and the slow speed shutter timer is at best running too slowly, and at worst, it remains stuck with the shutter open. The Carl Zeiss Jens 50mm Tessar f2.8 lens also needs attention - there's dirt and fungus on the optical elements, and the focusing helicoid is almost solid due to dried old grease.I'll work my way through the problems to get the camera back operating correctly - this is more of an overview than an instructional video, please don't think it's all as simple and quick as this if you're planning to attack your own camera - I probably spent half an hour on the slow speed shutter timer alone.Start 00:00Faults 00:09Camera Disassembly 02:24Slow Speed Shutter Timer 04:01Shutter Testing 06:41Camera Reassembly 08:01Cleaning the Lens 09:04Focusing Helicoid Disassembly 12:04Helicoid Regreasing 14:57Lens Reassembly 15:20Summary 15:53Outro 16:38If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Zeiss Ikon Contaflex Super B - Using a Film Camera in 2023 GrumpyTim 2023-07-06 | I first put a film in the Contaflex back in 2020, having just repaired the faulty shutter and cleaning the lens. The plan was to rattle off some shots and then make this video, but somehow that just didn't happen.....until I was reminded about finishing the film as I watched a video by David Flower (link down below) where he ran a roll through his Praktica. So now I've got round to finishing the film, we can finally take a look at the shots, along with a good look at the rather fantastic Contaflex Super B.The Contaflex cameras were made in Germany by Zeiss in the 50s and 60s - my Super B dates from around 1962.Film used in the Contaflex: Ilford FP4 125 ISOYou can see the video where David Flower uses his Praktica here:youtu.be/RLlAzs0_W5Y....and another one from David here:Foggy Street Photography youtu.be/1PI8lUkq7OU....and here are a couple of my other videos featuring vintage lenses:Olympus Zuiko 50mm f1.4 youtu.be/Zj8DB9shN_wIsco Gottingen Edixa Westromat 35mm f2.8 youtu.be/cnNng28knsEStart 00:00Skip to 2023 00:24Gallery 1 01:15History 01:33Prices 02:39Gallery 2 03:11Lenses 03:28Front Controls 04:08Gallery 3 06:13Top Controls 06:31Gallery 4 08:06Viewfinder 08:24Opening the back 09:18Repairs 09:52Gallery 5 10:43Outro 11:51If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Automatic Pencil Sharpener"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Stationary Engines at Binton Crank Up 2023, plus some vintage cars, bikes and tractors too. GrumpyTim 2023-06-12 | In this video we've got a small collection of Stationary Engines running at the Binton Crank Up 2023, held at Binton Social Club, Binton, Warwickshire. The stationary engines were a little thin on the ground this year, but there's a few clips of the massive motorbike ride in, along with some of the gorgeous classic cars and a small group of vintage tractors.In the stationary engine section, we had my BSA 300 watt generator/charging set, a 1923 Bamford Tulip Top 2.5 HP with a Bamber butter churn, a 1920 Fairbanks Morse Z Type 1.5 HP with a 1920 Fairbanks Morse Typhoon pump, and a Lister D with a relatively unheard of Osborne Bros diaphragm pump.Here are some links to the renovation videos for my BSA:Part 1 youtu.be/w61NfGX7GfUPart 2 youtu.be/KtZiVAtcHOEPart 3 youtu.be/8OdnbHAL3nwand some of my other stationary engine videos:youtube.com/playlist?list=PL8E7qepyRm5BVsZzbJa6lCItdmdhNmQ5xStart 00:00Fairbanks Morse 00:10Bikes, Cars and Tractors 01:43BSA Charging Set 02:20Crikey, it's the rozzers 03:18Bikes, Cars and Tractors 03:46Bamford 04:32Bikes, Cars and Tractors 05:48Lister D 06:40Bikes, Cars and Tractors 07:59Outro 09:06Thanks for watching.If you've enjoyed watching, please like the video, and if you fancy seeing more, maybe even subscribe to the channel.http://www.grumpytim.com
BSA 300 Watt Generator - Chore Horse - Part 3 - Magneto Rewind and 1st Start GrumpyTim 2023-05-24 | In this video we'll take our third look at the BSA 300 watt ex-military generator (or charging set if you prefer), also known as a "Chore Horse" as the BSA unit was a copy of the Johnson Chore Horse made under licence in the UK by BSA.In part two, the engine sort of ran, briefly, before the coil gave up completely and there was no spart at all. This time round I'll unwind the secondary winding from the coil and rewind it using a home made coil winding machine. Then I'll run the engine for the first time since the rebuild and check the generator is functioning before leaving you with a bit of commentary free engine running footage.The coil rewind is far from perfect and I could definitely do better if I had to do it a second time. I doubt for one second that this coil is going to last as long as the original, which was completely sealed from the outside world having been dipped in shellac (or similar). That said, the sealing had failed and moisture had managed to make it's way inside, so maybe mine will actually last longer than I think. You can see the previous videos here:Part One youtu.be/w61NfGX7GfUPart Two youtu.be/KtZiVAtcHOEStart 00:00Unwinding the coil 00:25Failure report 01:44More unwinding 02:25Exposing the primary winding 03:54Coil rewinding machine 04:35Rewinding the coil 06:18Testing the rewound coil 08:12Fitting the coil 08:41Starting the engine 09:29Checking the generator 10:36Running the engine 11:42Outro 13:25If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
BSA 300 Watt Generator - Chore Horse - Part Two - Will It Start? GrumpyTim 2023-05-09 | In this video we'll take a second look at the BSA 300 watt ex-military generator (or charging set if you prefer), also known as a "Chore Horse" as the BSA unit was a copy of the Johnson Chore Horse made under licence in the UK by BSA.Firstly we'll get the flywheel off in order to clean the points, and replace a missing insulator before finally getting a fairly weak spark - it was quickly discovered that the secondary winding on the magneto coil was "open circuit" so, although we do have a spark and the engine might run for now, ultimately, the coil will need to be rewound.After that, a large amount of time was spent pulling the engine starter rope, with so many "almost started" moments, but eventually the coil gave up completely and that was that.While we wait for the wire for rewinding the coil to arrive, I fabricated a silencer to go on the end of the flexible exhaust hose.You can see Part One here: youtu.be/w61NfGX7GfU...and Part Three here: youtu.be/8OdnbHAL3nwStart 00:00Flywheel removal 00:19Cleaning the points 01:02Checking the ignition system 01:50Open circuit secondary coil 03:10Oil change 04:42Generator 05:19Pre start 05:39Attempt to start 06:19Timing 07:38Attempt 2 08:11The next day 08:37Running - sort of 09:29Dead coil 10:34Making a silencer 10:46Outro 14:47If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Military BSA 300 Watt Generator - Chore Horse - Engine Rebuild - Part 1 GrumpyTim 2023-04-19 | I recently got this ex military BSA 300 watt generator (or charging set if you prefer). It had no compression, so needed some investigation to identify the problem, The BSA 300 watt generator was a more or less identical copy of the Johnson Chore Horse, made under licence by BSA in the UK. This set was primarily used to generate electricity to charge batteries used for military radio and so on.In the video I'll take a brief initial look at the engine, repair the air filter assembly, remove the cylinder head and the cylinder barrel itself, re-lap the valves, re-hone the bore, adjust the stem length of the exhaust valve, which turned out to be the initial issue causing the loss of compression. Finally, I'll take a quick look at the carburettor.You can see parts two and three here:Part Two: youtu.be/KtZiVAtcHOEPart Three: youtu.be/8OdnbHAL3nwAnd here's a couple of videos of some of my other engines:Enfield VS1 youtu.be/JPwk2tqTGmgPetter A1 youtu.be/kl2fFOLdovcGarden Crank Up youtu.be/rnFllArwjVYStart 00:00General info 00:18Air Filter 01:38Spark plug removal 02:49Cylinder head removal 04:25Cylinder barrel removal 05:28Valves 06:32Honing the bore 07:08Valve spring installation 07:30Piston 07:44No compression 08:17Valve stem length adjustment 08:48Carburettor 09:35Outro 10:14If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Singer Friden EC 1114 - Nixie Tube Calculator Repair - Part One GrumpyTim 2023-04-01 | Having been searching for a calculator with a nixie tube display for a few years, I recently got, and repaired, the Monroe 602 (link to that video down below), then, as is often the case, another machine came along within a few weeks. This time it's a Friden EC 1114 which was made by Hitachi somewhere around 1969 or 1970. The Singer badge on the front of the machine refers to Singer (the same company that makes the sewing machines) who bought Friden in the early 60s.Before applying power to these machines, I like to check the power supply and other circuit boards for any obvious issues - this machine, like many others has old electrolytic capacitors, which I took out and tested, replacing any that were way off their specified value.In this video I'll repair the case and sort the electronic issues but I'll leave the demo for part two, which should follow in about a week. You can see part two here:youtu.be/X3kpznyOvmwIn the meantime, you can see the videos showing the Monroe 620 and Hitachi KK561, links below:Monroe 620 youtu.be/00vAkeb3cb0Hitachi KK561 Part One youtu.be/QzARPqaYDFAHitachi KK561 Part Two youtu.be/veGG21VtrPMStart 00:00Friden EC1114 00:17First look 01:28Case repair 03:20Chassis and build quality 04:38Capacitors 05:19Logic PCBs 07:05Re-assembly 07:59First test 08:52Fault report 10:51Reed switch and neon lamp 11:13Outro 12:06If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Nixie Tube Calculator - 1972 Monroe 620 - Repair and Demo GrumpyTim 2023-03-13 | After a long wait I've finally got myself a Nixie Tube Calculator (or more correctly, a calculator with a Nixie tube display - it doesn't calculate nixie tubes!!!). The Monroe 620 was made somewhere around 1972 - I think there's a date code of November 1971 on the Texas Instruments chips, so that would put the calculator into 1972 or thereabouts. This calculator and others in this series, was actually made by Canon and placed in a Monroe case.The calculator was in a pretty bad state when I got it, the case was badly damaged, the circuit boards were filthy and some (most) of the capacitors were reading incorrect values. Once everything was cleaned, some components replaced and the case repaired, the calculator started playing up - the problem eventually being traced to a bad via on the keyboard PCB.The Nixie tubes in this machine are marked as:JRCB-5755K114E2Made in JapanIf you're interested in seeing some other vintage calculator repairs and demos, I'll put a few links below:Hitachi KK561 repair youtu.be/QzARPqaYDFAHitachi KK561 Demo youtu.be/veGG21VtrPMFriden 2002 repair and demo youtu.be/cN4cCFLSKAkMadas 20LZVG repair and demo youtu.be/E95tyqdwVccIf you want to see some beautiful nixie tubes being made, head to Dalibor Farny's channel youtu.be/wxL4ElboiuAStart 00:00First Look 00:37Power Supply 01:16Pre Testing 02:55First Test 04:14Case Repairs 05:00Power Plug 06:10Keyboard Fault 06:30Demo 08:39Divide by Zero 14:45The Nixie Tubes 15:17Outro 16:44If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Grundig Yacht Boy 210 - 1970s Radio - Repair, Clean & Demo GrumpyTim 2023-03-04 | I found this early 1970s Grundig Yacht-Boy 210 radio at a flea market, the price was good, and I do like a good old Grundig radio, so I bought it. Unlike the other two Grundig radios I've featured on the channel, this one didn't need that much doing to it - the top of the ariel had been broken off so I've made a replacement top section, albeit still quite a bit shorter than it would have been originally, and the foam voice coil cover on the loudspeaker had perished so that was also replaced along with the foam gasket round the speaker. Other than that, it just needed a good clean and then it was ready to demonstrate. Although there's not so much repair work to do in this video, it is fairly representative of the condition in which many of these old radios will be found, just needing a little bit of TLC to get them back into action.Start 00:00Dismantling 01:00Cleaning Part 1 02:10Speaker Repair 02:26Cleaning Part 2 03:23Ariel 03:50Controls & Inputs 04:24Demo 05:34Summary 08:13Outro 08:36You can see my previous Grundig radio repair videos here:Grundig Transistor 305 youtu.be/l24nORS5FYAGrundig Concert Boy 1100 youtu.be/18Qeb_cGYLEIf you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Acoustic Calculator"by GrumpyTim (available to download from GrumpyTim's Bandcamp Page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Vintage Calculator Repair - 1972 Hitachi KK561 - Part 2 - Fixed GrumpyTim 2023-02-21 | In the last video we looked at the Hitachi KK561 calculator, which wasn't working at the time, and eventually traced the fault to a faulty HD3233P chip that drives the display. Now, after a fairly long wait, a random circuit board has arrived, complete with some spare chips, so we'll install the replacement chip and then demonstrate the now fully functional 1972 Hitachi KK561 calculator, not forgetting the unanswered question, what happens if you divide by zero?You can see the first video here:youtu.be/QzARPqaYDFAStart 00:00Replacement Chip 00:16First Test 01:47VFD Tubes 02:50Decimal Places 03:41Sigma 04:37Constant 06:03Sigma & Constant 06:38Rounding 07:42Squaring and Negative Numbers 08:30Register Reverse 09:17Overflow 10:15Divide by Zero 10:29Summary 11:07Outro 11:40If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Vintage Calculator Repair - 1972 Hitachi KK561 - Part 1 GrumpyTim 2023-02-02 | We have another vintage electronic calculator for repair - this time round it's a 1972 (or thereabouts) Hitachi KK561, sibling to the KK562 which had 2 memories and not that dissimilar to the Friden EC1117 and EC1118 calculators which were also made by Hitachi.As is fairly normal, the calculator didn't work, the vacuum fluorescent display tubes just showed a load of decimal points and the three warning lights were illuminated. After much testing, we discovered that the calculator was actually running - when you entered 17 digits the calculator would overflow, requiring the clear key to be pressed. After that we discovered that you could read the contents of the main register and memory using an oscilloscope, it was in binary coded decimal or BCD format, but it was there all the same. So the problem lies with the display driver section, from what we can tell, the issue is with the HD3233P chip - I have a random PCB on order containing some of those chips, so hopefully the problem will be solved when we replace said chip. If however the problem is actually the HD3253P chip, then that's not so good, because I can't find any of those anywhere......yet.The follow up video with the calculator repaired is now available to watch here:youtu.be/veGG21VtrPMIf you wanted to see the two videos looking at the HP97 and Elektronika MC1103 calculators, there are links below:HP97 & Elektronika MC1103 youtu.be/QQ-Nz90n-V8HP97 Part 2 youtu.be/RmjUIwiw8WwStart 00:00Disassembly 01:02Cleaning the PCB 02:11Keyboard 02:48Voltages 03:10Capacitors 03:38Oscilloscope 05:09Overflow 05:28BCD 06:28Display Driver 08:45Faulty Chip 10:47Outro 11:33If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Casiowriter CW-20 - Electric Typewriter Keyboard Repair GrumpyTim 2023-01-18 | The Casiowriter CW-20 was one of many electric typewriters (or more accurately thermal typewriters), that came out in the 1980s, just before computers and word processors became the normal machine for letter writing. Early electric typewriters were essentially manual typewriters with an electric motor to fire the hammers into the platen. Then there were things like the amazing IBM golf ball typewriter and daisy wheel typewriters, and finally, along came the thermal typewriters from companies like Canon, Brother, Casio and so on.My CW-20 didn't work when I first got it - initially the LCD screen displayed "RAM Dead: Reset" and after a little searching, I found out that this can happen after the batteries have been changed. The reset procedure appears to be turning the typewriter on whilst holding the CMD and Margin Release keys. Once that error was cleared, most of the keyboard didn't work - this turned out to be a damaged ribbon cable on the keyboard membrane, along with dirty key contacts on the membrane itself. Once all that was sorted the typewriter worked perfectly (I did take it apart again and now the Tab Set key and the letter "S" work as they should do).Here are links to the two videos I did about an Imperial Good Companion Model 6 typweriter:Part 1 - Repair youtu.be/qmBOWVjV6IcPart 2 - Demonstration youtu.be/Idarp4--U3EStart 00:00Evolution 00:32Casiowriter 00:59Faults 01:30Inside 02:55Keyboard Membrane 04:19How It Works 05:19Repaired 06:12Test 07:38Outro 08:28If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
HP-97 - More Tests - Still Not Working - Vintage Calculators GrumpyTim 2022-12-16 | In the last video we looked at my 1979 HP-97 and 1990 Elektronika MC1103 vintage electronic calculators, both RPN (Reverse Polish Notation) calculators, and both were not working. This time round I'll concentrate on the HP, in the hopes I can get a bit closer to finding the fault, although, as I said in the previous video, I suspect the fault is a failed chip, if so, these are unobtainable, so the calculator will remain broken.I'll show the tests I'd already performed using an oscilloscope along with a few fresh tests.You can see the previous video here:youtu.be/QQ-Nz90n-V8...and you can see my other vintage calculators in this playlist:youtube.com/playlist?list=PL8E7qepyRm5BhvfGlDEM0xPnftwIHBYQDStart 00:00PCB Layout 00:18Power on Reset 01:41Sync, RCD, Strobe & Phi 02:43Printer 04:03Keyboard 04:49IS & Data 06:04Summary 06:48Outro 07:02If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Epic Fail - HP 97 & Elektronika MC 1103 vintage calculators GrumpyTim 2022-12-06 | A slightly different video this time round, showing the sad loss of my beautiful 1979 HP 97 calculator along with the as yet unfathomed, Soviet built, Elektronika MC 1103. Both calculators use RPN (AKA Reverse Polish Notation), which, once you're used to it, becomes a very natural way of doing your calculations.Hewlett Packard made a series of very powerful calculators in the 1970s, including the HP 97 and it's pocket sized sibling, the HP 67 - both machines used magnetic cards to store data when the machine was powered down.My Elektronika MC 1103 was a much later calculator, made in the Soiviet Union in 1990. The MC 1103 has some fairly advanced external connectivity, to measure data and receive signals from other equipment.At the time of filming, neither machine is working - hopefully I'll make some progress and release further videos featuring these two machines. If and when I do, I'll put links below:Here's the follow up video for the HP - don't get too excited, it's still not working!!!youtu.be/RmjUIwiw8WwAnd here's a couple of links to some of my other vintage calculators:Burroughs C-6202 youtu.be/wVVmMVPMyIgSinger Friden 2002 youtu.be/cN4cCFLSKAkCommodore US*10 youtu.be/qAgkOmWtceAStart 00:00HP-97 00:28Pre Failure 01:03Card Reader 01:34The Fail 03:00Elektronika MC 1103 04:18Connectivity 04:36Displays 04:57Power Up 05:36On The Inside 06:20Power Supply 07:48Summary 08:02Outro 08:16If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
The Orangy Goodness of the Dictaphone 10 (also available in Grey) GrumpyTim 2022-11-25 | The Dictaphone 10 was made in Switzerland sometime in the early 1970s, and it's very Orange!!! Unlike the Dictaphone Ultravox (also very Orange), the portable Dictaphone 10 uses a Minicassette (not to be confused with a Microcassette), to record the audio. The machine works very well as a voice recorder but isn't so good for music, largely due to the tape drive on the Minicassettes, which drives from the hub rather than having a capstan and pinch roller.You can see my Dictaphone Ultravox video here:youtu.be/BPFT_j7EVScStart 00:00Mini Cassette 00:25Battery Cover 00:58Inside 01:08Controls 03:09Audio Test 04:03External Mic 04:52Music Test 06:03Summary 08:11Outro 08:29If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Acoustic Calculator"by GrumpyTim (available to download from GrumpyTim's Bandcamp Page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Vintage Calculator Repair - Commodore US*10 - and Demonstration GrumpyTim 2022-11-11 | We have another vintage calculator for repair - this time it's a Commodore US*10, made in the USA in 1972 (or thereabouts). The US*10 is a basic, ten digit calculator with a Panaplex style gas discharge display.In the video we fix a few easy to spot issues on the circuit board and then have a rather strange occurrence of the calculator suddenly starting to work again. All the keyboard contacts needed to be cleaned due to decomposed foam on the inside of the calculator.Start 00:00General Info 00:12Initial Look Over 00:42Repair 02:35First Test 04:54Cleaning the Key Contacts 06:38Second Test 08:46Demonstration 09:03Underflow Overflow 11:58Outro 13:11If you like vintage calculators, here's my ever increasing playlist:youtube.com/playlist?list=PL8E7qepyRm5Al0if9zz-8cEVF-ZD3l0hrI also did a similar keyboard repair on a Monroe 525 calculator in the past, you can see that here:youtu.be/V3sxIS1_R7gIn the video I mentioned the 8 Bit Guy who did a video on the US*8 calculator - you can see his video here:youtu.be/Q0rSv8NfQXQIf you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Grundig Radio Repair - 1970s Grundig Transistor 305 - and quick demo GrumpyTim 2022-11-05 | I got this Grundig Transistor 305 radio recently, which was in need of repair - there was a corroded dead battery still inside and the tuning dial was stuck solid, other than that there was nothing else wrong with it, apart from needing a good clean!!!The radio was made in Portugal in the early 1970s, and like my other Grundig radio, it's beautifully built and sounds great.In the video I'll dismantle the radio and show how I freed up the seized tuner. Once it's back together I'll do a short demonstration of the radio working.You can see my previous video, looking at a Grundig Concert Boy here:youtu.be/18Qeb_cGYLEAnd if you enjoyed the one tune I was able to play without the fear of a copyright strike, you can see the music video here:youtu.be/cf4u9hoKXAoStart 00:00Overview 00:26Battery 00:54Tuner Repair 01:16Further Strip Down 02:42Freeing The Tuner 04:02Quick Test 05:22Re-assembly 06:13Demonstration 06:37Outro 08:38If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comAdditional Music"Acoustic Calculator"by GrumpyTim (available to download from GrumpyTim's Bandcamp Page)grumpytim.bandcamp.comhttp://www.grumpytim.com
WEE-DEX - Vintage Portable Gas Cooker from the 1950s GrumpyTim 2022-10-22 | I bought this Wee-Dex portable gas cooker from a jumble sale when I was a kid, but unable to get the gas bottle refilled, I was never able to use it. When I rediscovered it recently, a quick internet search found a solution to the refilling problem, and so now, after quite a long wait, I get to brew my first ever coffee on the stove.The Wee-Dex stove was made by Dex Industries Ltd, of Twickenham, Middlesex - first introduced in the late 40s but my copy probably dates from somewhere in the 50s.In the video we'll give a brief overview of the stove, then try it out, before refilling the gas tank.I've previously done a video featuring my 1915 Primus Stove model 210 - you can see that here: youtu.be/kIteToh0tbAStart 00:00History 01:08Cooking 02:25Refilling 04:42Reassembly 07:29Outro 08:02I was inspired to go searching for this stove after seeing one of Ben's Workshops videos where he uses his vintage Optimus 8R stove - I'll put links to a couple of those videos below:youtu.be/8_qMK_9ODbQyoutu.be/1iJ6UHc_KA8Oooh, yes, a huge thank you to John for posting his very thorough thread about the Wee-Dex stoves, I'm not sure whether I'd have figured out a way of refilling this stove without him.If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Vintage Calculator - Singer Friden Model 2002 GrumpyTim 2022-10-16 | The Friden 2002 calculator is a printing calculator, made in Japan in 1975 for Singer Friden - Singer being better known for their sewing machines. In the 1960s Singer bought up the Friden Calculating Machine Company and created Singer Business Machines.In the video we'll look at the standard mathematical functions, along with the use of the percent key, constants and suing the memories, before having a look inside the machine.Start 00:00History 00:18My Friden 2002 01:21Basic Functions 02:38Percent 04:41Constant 06:26Decimal Places 07:57Example using Memories 10:30On the inside 14:04Outro 15:39If you'd like to see some other calculators from the same period, here are a couple of my other machines:Adler 1214P youtu.be/bf4M9973x_wBurroughs C6202 youtu.be/wVVmMVPMyIgI mentioned curiousmarc in the video - he has a lovely Friden STW-10 along with plenty of other fascinating pieces of equipment - here are a couple of his videos:youtu.be/qKm9eM2BuM0youtu.be/-MLQ0yI1BrQIf you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Vintage Calculator - Burroughs C-6202 PREprogrammed Printing Calculator GrumpyTim 2022-10-10 | The Burroughs C-6202 PREprogrammed Printing Calculator was made in France in 1973 (or thereabouts). It's a fairly advanced calculator with 5 memories and 8 pre-programmed applications to assist you in your work. The C-6202 was aimed firmly at the business accounting market.In the video, we'll go over the basic functions, including using constant multiplication and division, percentages and memories, before looking at how to use the 8 program modes on the Borroughs electronic calculator.In the previous 2 videos, we looked at, and repaired, the Shinshu Seiki EP-102 printer from this machine - links below:Part One youtu.be/LQ1iWLKqKGUPart Two youtu.be/-m6a4Yix1goOh, and here's the Adler calculator video that I mentioned in the video:youtu.be/bf4M9973x_wStart 00:00History 00:38Burroughs C-6202 01:49Basic Demo 02:13Percent & Change Sign 04:00Decimal Selector & Floating Point 05:39Constants 06:36Overflow and Clear 08:16Memories 08:47Program Intro 09:42Program 1 10:18Program 2 14:27Program 3 16:43Program 4 18:30Program 5 20:03Program 6 22:00Program 7 23:39Program 8 Logarithms 25:26Outro 27:10If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
1970s Calculator Printer - Shinshu Seiki EP-102 - Part Two - Making a New Gear GrumpyTim 2022-09-30 | In Part One we looked at the EP-102 calculator printer, made in Japan in the early 1970s by Shinshu Seiki. The printer came out of a Burroughs C6202 Pre Programmed printing calculator, but was also used in many other printing calculators of that time. The printer had suffered the common problem of a stripped drive gear, so in this episode we'll make a replacement gear and test the calculator to make sure it's back working ok.There will also be a future episode when I demonstrate the Burroughs C6202 calculator itself. I'll put a link to that video here once it's done.youtu.be/wVVmMVPMyIgThe EP-102 was the successor to the EP-101, made in Japan by Shinshu Seiki, a subsidiary of Suwa Seikosha. Shinshu Seiki went on to become Epson in the 1980s, the name apparently coming from a later incarnation of this printer EP-SON.You can see Part One here:youtu.be/LQ1iWLKqKGUStart 00:00Removing the old gear 00:22Making the new gear 01:42Drilling the gear 02:09Assembling the gear 04:01The completed gear 04:24First test 04:55Second test 06:12Gear specifications 07:34Summary 07:59Outro 08:09Gear Specifications:0.4 ModuleSmall gear 17 teethLarge gear 68 teethOverall width of original gear 7.2mm, although replacements were both 3mm wide so it only came to 6mm, the difference being made up by creating a longer sleeve to join the two new gears.The replacement gears came from HPC Gears in the UK.If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
1970s Calculator Printer - Shinshu Seiki EP-102 - Part One GrumpyTim 2022-09-23 | Today we're looking at an EP-102 impact printer that came out of a 1973 Burroughs C6202 Pre Programmed calculator. The printer worked for a few minutes before one of the drive gears stripped - this appears to be a common problem with these printers, and after examining the stripped gear, it looks like whatever material it's made of has decomposed because it's soft and you can break the teeth off with your fingernail.The EP-102 was the successor to the EP-101, made in Japan by Shinshu Seiki, a subsidiary of Suwa Seikosha. Shinshu Seiki went on to become Epson in the 1980s, the name apparently coming from a later incarnation of this printer EP-SON.In the video we'll take a look at the failed gear and also show the rather ingenious way the printer hammers are synchronised with the revolving drum, then hopefully there will be a follow up video soon, once I've cobbled together a replacement gear. I'll put a link below once that video is released.youtu.be/-m6a4Yix1goAlso, here are a couple of links to other calculator videos I've done:Adler 1214P youtu.be/bf4M9973x_wMercedes Euklid Model 21 youtu.be/qNwNt6pe6fI....and here's the demo video of the Burroughs C6202 once it's finished:youtu.be/wVVmMVPMyIgStart 00:00Intro 00:06Issues 00:33History 01:11Dismantling 01:40Stripped Gear 02:20How It Works 02:48Gear Alignment 04:53Summary 05:47Outro 06:15If you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Early 1970s Electronic Calculator - Adler 1214P GrumpyTim 2022-09-17 | The Adler 1214P (aka Triumph Adler 1214p) was made in Japan in 1973, and although electronic calculators had been around since the 60s, it was in the early 1970s that they really began to take over from the old mechanical calculators.The 1214P is a printing calculator with a 12 digit capacity and some relatively advanced and user friendly features for the time.In the video we'll look at what features the calculator has along with the age old question "what happens if you divide by zero", and finally we'll take a look at the inside of the machine.Start 00:00History 00:11Addition & Subtraction 02:01Multiplication & Division 03:05Decimals 03:43Change Sign 05:38Constant 06:17Percentage 07:20Exchange 09:01Memory 10:01Divide by Zero 12:08Internals 12:36Outro 14:22You can see more of my vintage calculators in my playlist here:youtube.com/playlist?list=PL8E7qepyRm5BhvfGlDEM0xPnftwIHBYQDIf you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Sterlicon 5 - The Ultimate British Decimal Currency Converter GrumpyTim 2022-09-08 | The Sterlicon "5" currency converter was introduced in 1970 in preparation for D Day or Decimal Day on Monday 15th February 1971 - the day that Britain officially changed from the old Pounds, Shillings and Pence currency to the Decimal system that's still in use today. The Sterlicon is a mechanical calculator, albeit with a limited amount it can do, as it can only convert old sterling currency into decimal - I'll put a link below to my playlist of mostly mechanical calculators. There were plenty of other currency converters available, from simple charts to devices with rotating wheels to reveal the conversion, but everything I've seen rounded certain figures up or down because the two currencies didn't divide into each other exactly. The Sterlicon gave a more accurate conversion with up to 3 decimal places for each penny.The Sterlicon was very well made, and cost £6/19/6 (six pounds nineteen shillings and six pence) which equated to £6.97 1/2 in the new decimal currency.Start 00:00Pounds Shillings & Pence 00:17Coins 00:35Preparing for D Day 02:23The Sterlicon 02:40How it works 03:56Sterlicon details 06:44Outro 09:15Since filming this video I might have figured out the "5" in the name - the Sterlicon calculates the pound 5 decimal places, so that may well be the reason for the "5" in the name.You can see more of my vintage calculator videos in my playlist here:youtube.com/playlist?list=PL8E7qepyRm5BhvfGlDEM0xPnftwIHBYQDIf you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBOutro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
Olivetti Multisumma 20 - Part 2 - Mechanism & Repairs GrumpyTim 2022-09-01 | In the previous video we looked at the Olivetti Multisumma 20 electro mechanical adding machine, and showed what is does and how to use it. This time round we'll take a look at some of the repairs needed to get the machine back into working order and take a general look at the mechanism inside. There's even a short section showing an additional feature of the multiplier that I hadn't spotted when I made the first video.The machine was made by Olivetti in Italy in the early 1970s.Start 00:00Opening Case 00:19Repairs 01:39How It Works 07:57Multiplier Addendum 11:10ASMR Footage 12:24Outro 14:00You can see the previous demo video here: youtu.be/rKsCwe0xK-8You can also see the pair of videos I previously released looking at the hand cranked Olivetti Prima 20.Part One - Repairs: youtu.be/ZZvxWnmBUvYPart Two - Demonstration: youtu.be/PFVPMyHE5EYAnd if you still want more, here's a link to my playlist of vintage calculator videos:youtube.com/playlist?list=PL8E7qepyRm5BhvfGlDEM0xPnftwIHBYQDIf you've enjoyed this video and you'd like to help support the channel, you can make a one off, no obligation donation, using the PayPal link below:paypal.com/paypalme/GrumpyTimYouTube?locale.x=en_GBIntro Music"As Yet Untitled"by GrumpyTim (available to download from GrumpyTim's Bandcamp page)grumpytim.bandcamp.comhttp://www.grumpytim.com
