Uploaded March 2023 | Updated September 2026, 3 weeks ago
This is the last part of my simple "replumb the hoses and change the impeller" project took way longer than I expected... This episode is about pushing through frustration after frustration to eventually find success.
patreon.com/TheDigitalMermaid
Lady K Sailing Discord Server:
* discord.gg/MEVaWbTSKk
Channels that have Helped Me;
* @ProjectBrupeg
* @BillCarlson (Project Lightening)
* @OffGridGarageAustralia
* @LadyKSailing
* @AcornToArabella
0:00 - Intro
0:38 - Draining The Concentrated Coolant
2:56 - Cleaning The Coolant Impeller
6:06 - Refilling with Coolant, Again
8:36 - Realising The Coolant Reservoir Problem
10:36 - Reconnecting Wires
14:18 - Turning Over The Engine, or Not.
15:35 - Battery Charger Problems, Dead Batteries
21:40 - What Went Wrong?
22:30 - Engine Start, Take 1
25:00 - Engine Start, Take 2
26:19 - Engine Start, Take N+, Fuel Issues
30:45 - Free Spinning? What?
32:24 - Engine Start!! But No Cooling.
33:50 - Transmission Fluid Level?
34:32 - A Dumb Mistake; Coolant Working Now?
35:55 - Nope. Burnt Impeller?
37:06 - Priming the Sea Water Loop
39:25 - Cooling Working, Take 2?
41:40 - What Could be Wrong?
43:19 - Testing the Heat Exchanger
45:57 - A False Ending
46:32 - Impeller Hub Failure?
48:50 - Sea Strainer Problem?
56:04 - Cooling Success!
57:30 - But Wait, There's More!
This is the last part of my simple "replumb the hoses and change the impeller" project took way longer than I expected... This episode is about pushing through frustration after frustration to eventually find success.
patreon.com/TheDigitalMermaid
Lady K Sailing Discord Server:
* discord.gg/MEVaWbTSKk
Channels that have Helped Me;
* @ProjectBrupeg
* @BillCarlson (Project Lightening)
* @OffGridGarageAustralia
* @LadyKSailing
* @AcornToArabella
0:00 - Intro
0:38 - Draining The Concentrated Coolant
2:56 - Cleaning The Coolant Impeller
6:06 - Refilling with Coolant, Again
8:36 - Realising The Coolant Reservoir Problem
10:36 - Reconnecting Wires
14:18 - Turning Over The Engine, or Not.
15:35 - Battery Charger Problems, Dead Batteries
21:40 - What Went Wrong?
22:30 - Engine Start, Take 1
25:00 - Engine Start, Take 2
26:19 - Engine Start, Take N+, Fuel Issues
30:45 - Free Spinning? What?
32:24 - Engine Start!! But No Cooling.
33:50 - Transmission Fluid Level?
34:32 - A Dumb Mistake; Coolant Working Now?
35:55 - Nope. Burnt Impeller?
37:06 - Priming the Sea Water Loop
39:25 - Cooling Working, Take 2?
41:40 - What Could be Wrong?
43:19 - Testing the Heat Exchanger
45:57 - A False Ending
46:32 - Impeller Hub Failure?
48:50 - Sea Strainer Problem?
56:04 - Cooling Success!
57:30 - But Wait, There's More!


![Its Alive!! - Ep. 122
This video is pretty huge for me, its the first signs of life from my first PCBs! It wasnt without trials though... The things to fix on the next version of the PCBs is growing, but thats OK, were making progress!
] Patreon:
- https://www.patreon.com/c/TheDigitalMermaid
] Channels that have Helped Me;
* @ProjectBrupeg
* @OffGridGarageAustralia
* @AcornToArabella
* @BillCarlson
] References;
Mr SolderFix
- @mrsolderfix3996
- https://www.youtube.com/watch?v=M4E3d3eZNqE
Icom IC-M510 Evo
- https://www.icomamerica.com/lineup/products/IC-M510_evo/
Amphenol LTW MSAS-05PMMC-SF8C15 (NMEA2000 Connector)
- https://www.digikey.ca/en/products/detail/amphenol-ltw/MSAS-05PMMC-SF8C15/21717865
Adrians Digital Basement
- @adriansdigitalbasement
Usagi Electric
- @UsagiElectric
Antaira UTS-1110A
- https://www.antaira.com/products/USB-to-Serial/UTS-1110A
] Chapters;
0:00 - The Proper Linear Regulator Is Here!
0:17 - New PCB Recording Mount
1:17 - Replacing The Linear Regulator
4:59 - Fixing A Problem With A Mistake
9:33- A Question For The Hive Mind
10:23 - Replacing The Wrong Connector With A Hack
13:54 - Repairing A Damaged PCB Trace
17:15 - Slow Speed Twisting
19:31 - Chassis Mount to PCB Mount Adapter
22:05 - Second Round Improvements
22:50 - Verifying Proper Voltages
23:43 - Hellorld! The Way of The Rabbit
24:53 - Programming With The STLinkV3/Set
27:39 - It Kinda Works Better When Powered On
28:37 - Debugging USART Comms; Pt 1
30:33 - Trying To Debug With A Silly Scope
33:46 - Crossed Wires?
35:08 - ITS ALIVE! The Joy Of DIY Its Alive!! - Ep. 122](https://i.ytimg.com/vi/rFR2TrEfu_Y/mqdefault.jpg)
![Mistakes and Perseverance - Big Battery Box Pt. 3 - Ep. 110
Well, I screwed up. Ive been struggling lately, but I kept pushing myself. I pushed myself to work tired, and I ended up in the emergency room (A&E) after cutting a couple fingers on the table saw.
This episode is ostensibly about the third part of the battery box build, but really, its about being at a point in the project where everything is a struggle and you cant seem to get anything right. So what do you do?
You dont give up.
] Patreon:
- https://www.patreon.com/TheDigitalMermaid
] Channels that have Helped Me;
* @ProjectBrupeg
* @OffGridGarageAustralia
* @AcornToArabella
* @BillCarlson
] References;
Arcona 460 Yacht sinks after rudder stock failure
- https://www.youtube.com/watch?v=2Rh7piQzpAQ
Acorn To Arabella - Dissimilar Metals Pt. 2
- https://www.youtube.com/watch?v=bBIUju6pJYk
Ep. 88 - Damaged Battery Test Results
- https://www.youtube.com/watch?v=qTIfzQUa-c8
] Chapters
0:00 - Flash Forward
0:07 - Test Fitting the Second Box
0:49 - A Note on Losing the Rudder
2:21 - Back to Test Fitting
3:32 - Motor Mount Question
4:12 - Yet Another Battery Box Design
5:07 - Concerns about Qiso
6:50 - Hard Choice; Down to Five Packs
9:05 - The Importance of Planning Cuts
9:59 - I Bought a Taco!
10:21 - Setting up to Cut
15:09 - Mistakes, Confidence and Compliments
17:22 - Lets Start Cutting!
19:02 - If Youre Not a Natural, Be Stubborn
22:08 - Figuring Out How to Make a Funky Cut
23:28 - Forstner Bits and Plunge Cuts
25:40 - Imperfectly Yours vs Perfectly Bought
27:28 - Fixing Veneer Blowout
29:15 - The last of the 1/2 Parts
30:27 - A New Fastener Plan
32:10 - Avoiding Iron Sickness in Wood
32:44 - Making The Aft Supports
34:30 - Flush Trim Router
37:02 - A Very Ill-Advised Router Trick
38:21 - Starting the Mid-Plate Rails
40:27 - Jointers and Thickness Planer Basic Tricks
43:50 - Dull Blades Make Crappy Jointed Edges
46:55 - Ripping on the Table Saw
48:52 - Cleaning the Vacuum Cleaner
49:26 - The Mistake That Sent Me to the Hospital
51:31 - Back Home, What Now? Mistakes and Perseverance - Big Battery Box Pt. 3 - Ep. 110](https://i.ytimg.com/vi/rPcB4f8SYRA/mqdefault.jpg)
![Galvanic Wasting and Lightning Protection - Ep. 126
One of the key realisations that sent me down this lightning rabbit hole was the effect that bonding my lightning protection system to my electrical system would have on the wasting of my sacrificial anodes. It was not something I had heard discussed before. Realising this was overlooked in ABYC TE-4, I started wondering what else was missed.
This video is a deep drive into the chemistry and physics of galvanic action. It covers why blindly bonding the lightning and electrical grounds is dangerous, and why bonding them is critical anyway.
] Patreon:
- https://www.patreon.com/c/TheDigitalMermaid
] Channels that have Helped Me;
* @ProjectBrupeg
* @OffGridGarageAustralia
* @AcornToArabella
] References;
None in this video
] Chapters;
0:00 - The Trip Down the Rabbit Hole
0:53 - A Brief Discussion on Induced Galvanic Action
2:18 - Chemical Galvanic Action
2:46 - Anodic and Cathodic Metals; What Does This Mean?
4:09 - Energy States and Quantum Orbital Shapes
6:56 - A Water Tower Analogy
9:19 - Boats as Chemical Batteries
10:44 - Reduction Reaction on the Cathode
12:48 - The Mechanics of Anode Wasting
16:23 - Planning For Anodic Wasting
19:35 - Two Options; First, More Anodes
20:31 - Option Two; Capacitor Bridge
22:04 - Why Bonding Is Critical; Side Flashes
27:30 - Bonding To Reduce Voltage Delta
29:05 - How A Capacitor Bridge Bonds Without Bonding
] Image References;
Sea of free electrons
* Saint Chemistry 10
* https://saintschemistry10.weebly.com/metallic-bonding.html
Classical Aluminium Atomic Structure
* National MagLab
* https://nationalmaglab.org/magnet-academy/try-this-at-home/atomic-ornament/
The SPDF Orbitals
* Joel M Wiliams
* https://vixra.org/abs/1308.0130
* https://www.gsjournal.net/Science-Journals/Research%20Papers-Quantum%20Theory%20/%20Particle%20Physics/Download/5031
Kitchener Water Tower
* Christine Clark, 570 NewsRadio
* https://kitchener.citynews.ca/2026/06/04/regional-council-passes-parts-of-water-risk-management-plan-developers-frustrated/
Classic Chemical Cell
* Openstax, Figure 17.8 from Chapter 17.5: Batteries and Fuel Cells
* Access for free at https://openstax.org
H20 Dipole
* By Riccardo Rovinetti - Own work, CC BY-SA 3.0
* https://commons.wikimedia.org/w/index.php?curid=31556358 Galvanic Wasting and Lightning Protection - Ep. 126](https://i.ytimg.com/vi/rfCUAoWtmik/mqdefault.jpg)
![Ep. 86 - Decisions Made! - Lets Get Technical
This video is very different from recent ones, and it covers, in some technical detail, the electric motors Ive chosen, and why Ive chosen them. We talk about Phase 3, and what will come in the near future videos.
] Channels that have Helped Me;
* @ProjectBrupeg
* @OffGridGarageAustralia
* @AcornToArabella
* @BillCarlson
] Resources and References;
@SVBombadil
* Amps, volts and kilowatts oh my!; https://www.youtube.com/watch?v=827YcW-Tb9M
Golden Motor;
* 10kw:
* Product: https://goldenmotor.bike/product/48-volt-10kw-bldc-motor-liquid-cooled/
* Data: https://www.goldenmotor.com/eCar/HPM48-10000.pdf
* Curve: https://www.goldenmotor.com/eCar/HPM48-10000Curve.pdf
* 5kw:
* Product: https://goldenmotor.bike/product/48-volt-5kw-bldc-motor-liquid-cooled/
* Data: https://www.goldenmotor.com/eCar/HPM48-5000.pdf
* Curve: https://www.goldenmotor.com/eCar/HPM48-5000Curve.pdf
Kelly Controller;
* https://kellycontroller.com/shop/klshigh-current-motor-controllers/
Seeeduino Nano;
* 102010268: https://www.seeedstudio.com/Seeeduino-Nano-p-4111.html
Contactor;
* LittleFuse DCNLM400NB48: https://www.mouser.ca/datasheet/2/240/Littelfuse_9_8_2022_DCNLM-3011507.pdf
Spectra-Symbol;
* HotPot 353° Rotary; https://spectra-symbol-landing.s3.us-west-1.amazonaws.com/data-sheets/SoftPot-Series-Datasheet-v2019a.pdf
Yanmar 3QM30 Power Curve
* https://sbo.sailboatowners.com/downloads/Yanmar-Marine-diesel-engine-2QM20H-3QM30H.pdf
Bruntons Eco*Start Autoprop
* https://bruntonspropellers.com/autoprop-ecostar/
] Chapters
0:00 - New Sweater!
1:13 - A Decision Was Made!
2:30 - Phases of this Channel
3:35 - Phase 3; Controls for the Controller
4:49 - Why the Kelly Controller?5:54 - The Helm Control Plans
9:13 - Why a 10kw Motor to Replace a 27hp Engine?
12:46 - Marketing Bullsh…; Controller Amperage
15:48 - Paralleling Motors
16:53 - But 10kw is only 13hp?!
18:25 - SV Bombadil; An Ericson 39B
19:50 - Understanding Power to Move!
23:07 - Adding a 5kw Motor; But Why?
27:14 - Could I Have Done The Trip Home?
28:43 - MOAR. BATTERIES!
32:15 - Estimating Range
33:29 - Running Mast Down, Without a Generator!
36:41 - Dealing With Duldrums
37:10 - Summarizing The Plans
37:59 - Insurance Problems, Plan Impact
38:55 - Phase 4 Plans
40:23 - Regen Numbers and Testing Plans
41:20 - Many Thanks and Thank Yous! Ep. 86 - Decisions Made! - Lets Get Technical](https://i.ytimg.com/vi/s7BLrcdmb88/mqdefault.jpg)




![Ep. 103 - Replacing a Quattro With a Multiplus-II
NOTE: I say in this video Charge miles per hour. I meant to say that for each hour of charging, I want to charge at greater than 1 hour of travel. The miles per hour is times 4, assuming 4 knots travel speed.
Were back to angry pixies! In this video, I replace the old Victron Quattro 48/5000/70 for a new Multiplus-II 48/5000/70. I talk about why I switched, and what the differences are between the two models. Then we get it setup and charging the batteries again.
] Patreon:
- https://www.patreon.com/TheDigitalMermaid
] Channels that have Helped Me;
* @ProjectBrupeg
* @OffGridGarageAustralia
* @AcornToArabella
* @BillCarlson
] References;
- Multiplus-II 48|5000|48-120v Specs;
- https://www.victronenergy.com/upload/documents/Datasheet-MultiPlus-II-120V-EN.pdf
- Quattro 48|5000|48-120v Specs;
- https://www.victronenergy.com/upload/documents/Datasheet-Quattro-3-10kVA-120V-EN.pdf
- Victron Overload Source;
- https://communityarchive.victronenergy.com/questions/4454/peak-power-of-victron-inverters.html
- Victron Config Guide with Power Modes
- https://www.victronenergy.com/media/pg/MultiPlus_2kVA_120V/en/configuration.html
- Song Chuan 511HP1-1AH-F-C E01 Relay
- Note: Spec sheet reports 400v, I read 830v
- https://www.mouser.com/datasheet/2/378/2016111178754208-1862130.pdf
] Chapters
0:00 - I got a new toy!
0:51 - Why I originally got the Quattro
2:31 - Unboxing the Multiplus-II 48/5000/70
3:53 - A discussion on miles per hour recharge rate
7:39 - Weight differences
8:24 - Comparing the Quattro to the Multiplus-II
13:37 - Opening the lower panel of the Multiplus-II
14:22 - A problem with Canon passthrough power
14:47 - Taking a look inside the Multiplus-II
19:29 - Concerning marks
19:57 - Hats off to professional videographers
20:06 - Closing up the Multiplus-II
21:17 - When will the MP2 fit on the boat?
23:23 - Making space for the MP2 with Mae
26:30 - Mounting the MP2
27:37 - Missing Handles!
28:19 - Pinning the MP2 to the wall, not the cable
29:13 - Cutting grommets
30:48 - Pro diesel comments, still!
31:39 - Wiring up the Multiplus-II
33:08 - Converting the AC in line to ferrules
34:24 - Two AC outs, load shedding!
34:51 - A kitty interlude
35:55 - Back to wiring the AC side
37:49 - On to wiring the DC side
40:17 - An unexpected distraction
42:08 - Double-checking everything
44:57 - Firing up the Multiplus-II!
46:19 - Charge voltage and absorption comments
48:08 - Bringing all batteries online
49:30 - First charge!
50:19 - Cerbo touch display failure Ep. 103 - Replacing a Quattro With a Multiplus-II](https://i.ytimg.com/vi/uAeh74TjtR8/mqdefault.jpg)