Uploaded January 2025 | Updated September 2026, 2 weeks ago

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Thanks to FlyFive33, manufacturers of top-quality FPV racing drones and equipment, for participating in this video. Their website is: flyfive33.com/?wpam_id=21

Buy a ready-to-fly Tiny Trainer at: bit.ly/3PPQBu9

Evan's Youtube is: youtube.com/@headsupfpv

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00:00:00 - Can you use DJI O4 for racing?
00:01:39 - Weight comparison: DJI vs analog vs HDZero
00:02:57 - Evan sets a hot lap iwth HDZero
00:05:04 - Interference test between HDZero, Analog, DJI O4
00:06:34 - How close can DJI get before it interferes?
00:07:04 - How to spectate and monitor DJI pilots

Build your own Cosmostreamer: youtube.com/watch?v=yAqGjthAvWc

00:09:42 - Testing timing with DJI, analog, and HDZero
00:10:51 - O4 Lite FOV is smaller -- worse for racing
00:11:31 - Evan detects ELRS 50 Hz vs. 500 Hz
00:14:09 - Crash testing the DJI O4 Lite
00:15:19 - Evan sets a hot lap with DJI O4
00:18:06 - One last hot lap on HDZero
00:19:11 - What was the biggest difference between them?
00:21:27 - More testing is needed

My whole DJI O4 playlist: youtube.com/playlist?list=PLwoDb7WF6c8m5Z9hCQRoFOIlob7hjujk8