Uploaded May 2026 | Updated September 2026, 3 weeks ago
Uncertain about what to buy? Check out THE ULTIMATE FPV SHOPPING LIST: fpvknowitall.com/ultimate-fpv-shopping-list
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THIS IS MY FULL TIME JOB. Here are other ways that you can support me: fpvknowitall.com/support-me
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I receive a commission (at no extra cost to you) if you make a purchase after clicking one of the affiliate links below.
Buy the Flywoo FireFly 20 and 25 Pro at:
* Flywoo - bit.ly/4dv5ptF
* GetFPV - bit.ly/49bFd69
* RaceDayQuads - bit.ly/4uuHamH
MANDATORY DISCLAIMER: I am a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for me to earn fees by linking to Amazon.com and affiliated sites.
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0:00 - Which is best to carry DJI O4? 2" or 2.5"?
0:58 - Once-piece frame. Good balance of weight and durability.
2:21 - I hate side plates
2:50 - I love the receiver mounting
3:24 - The same motors for both sizes?!
4:22 - Quickly swap vTX between frames
6:04 - Soft-mount camera "bobbins" are a potential weak point
7:36 - DJI O4 stabilization bug?
8:56 - Closer look at the FC
11:56 - OSD setup is incorrect
My OSD CLI dump: pastebin.com/wSquhCxt
13:49 - Recommend to raise max cell voltage
14:24 - A real beeper! YES!
15:06 - Recommended batteries
16:06 - Flight Test: 2" O4 Pro 1000 mAh 3S
19:09 - Side plates suck. Remove them.
19:27 - Flight Test: 2" O4 Pro 650 mAh 4S
23:25 - Flight time comparison: 3S vs. 4S
24:05 - Flight Test: 2" O4 Lite 650 mAh 4S
34:19 - 2.5" has significantly longer flight time
35:05 - Conclusion: Which is best?
Uncertain about what to buy? Check out THE ULTIMATE FPV SHOPPING LIST: fpvknowitall.com/ultimate-fpv-shopping-list
SUPPORT ME ON PATREON at: bit.ly/2Ep5Sia
THIS IS MY FULL TIME JOB. Here are other ways that you can support me: fpvknowitall.com/support-me
---
I receive a commission (at no extra cost to you) if you make a purchase after clicking one of the affiliate links below.
Buy the Flywoo FireFly 20 and 25 Pro at:
* Flywoo - bit.ly/4dv5ptF
* GetFPV - bit.ly/49bFd69
* RaceDayQuads - bit.ly/4uuHamH
MANDATORY DISCLAIMER: I am a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for me to earn fees by linking to Amazon.com and affiliated sites.
---
0:00 - Which is best to carry DJI O4? 2" or 2.5"?
0:58 - Once-piece frame. Good balance of weight and durability.
2:21 - I hate side plates
2:50 - I love the receiver mounting
3:24 - The same motors for both sizes?!
4:22 - Quickly swap vTX between frames
6:04 - Soft-mount camera "bobbins" are a potential weak point
7:36 - DJI O4 stabilization bug?
8:56 - Closer look at the FC
11:56 - OSD setup is incorrect
My OSD CLI dump: pastebin.com/wSquhCxt
13:49 - Recommend to raise max cell voltage
14:24 - A real beeper! YES!
15:06 - Recommended batteries
16:06 - Flight Test: 2" O4 Pro 1000 mAh 3S
19:09 - Side plates suck. Remove them.
19:27 - Flight Test: 2" O4 Pro 650 mAh 4S
23:25 - Flight time comparison: 3S vs. 4S
24:05 - Flight Test: 2" O4 Lite 650 mAh 4S
34:19 - 2.5" has significantly longer flight time
35:05 - Conclusion: Which is best?
