Rebuilding my Tarot 650 Sport onto the better designed Daya H4 680 frame, upgrading to FrSky R9 & adding OSD at the same time. Servo dropper for mid-air miniquad launches ;)
https://www.thingiverse.com/cjdavies/collections/daya-h4-680-quadcopter-drone
https://www.rcgroups.com/forums/showthread.php?3073156-Daya-H4-680-build
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Great build! Thanks for the detailed photos and info. I've started my build based on the same frame. The arms are two different lengths. I think the shorter arms are supposed to go on the rear where the connection point is about 1" longer than the front (so all arms will effectively be the same length). That way, all arms are the same distance from the center point of the frame. Some pictures from the manufacturer have the short arms on the front and some have the shrot arms on the rear. I guess ultimately it doesn't really matter because the frame folds with either configuration and it depends on where you locate the center of gravity. But, if you want the arms to be the same length from the center, the long arms should be on the front (shorter frame front) and the short arms should be on the back (longer frame rear).
I finally posted my build (https://rotorbuilds.com/build/18468) and have made it past the maiden. It flies great!! Thanks again for sharing your build -- it really helped.
Hey, I'm thinking of a similar build - any reason why I couldn't use the more modern 40A ESC that are more readily available for race quads? Thanks!
The only reason I used the ancient massive HobbyWing ESCs is because they're renowned in the Ardupilot community for being absolutely bulletproof for large, low kv, high stator count motors. I don't know how much desyncs on larger/slower motors are still an issue with certain ESCs & whether modern blheli32 race quad ESCs would handle them fine, but I'd wager they'd be fine now we're not all running SimonK anymore... Ironically the HobbyWings do actually run a (specially modified) version of SimonK :3
wow was that carbon gunk inside the arms?? maybe i need to take mine apart and clean my arms out!
Wow you beat me to it....I'm in the process of building on a DJI f450 flamewheel. I'm building a "recovery," quad to retrieve minis that are stuck in trees or crashed on a rooftop. Your mid air release system is pretty sweet, id love to see it in action!.... Nice build man.
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have personality, but my daya680 lack a part, which is used to fix aircraft arm, could you please sell me one? I've looked for it for weeks