Arduplane ZOHD Drift

By cjdavies on Sep 28, 2020

27  2,625  9

The fourth plane I've built in my quest to break into fixed wing after 5-6 years of flying multirotors & the first one that has just clicked with me.

Default Arduplane P gains are way too aggressive for such a small/light plane, I had to half them for it to fly well enough to start the autotune procedure.

Arduplane config - https://gist.github.com/CJ-Davies/1e3e77eba9901284d7e59df52fbf2dbb

Flight time on its first outing with a 2S 3000mAh 18650 was 46 minutes.

Photos

Discussion

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CamiloJL   May 09, 2023  

Hello. Nice build! I have something similar just about to test. I saw on your config list that you are using the stock AUTOTUNE_LEVEL (6). I know you are already flying your plane very well but have you try this setting below 6? I´m gonna give it a try on 3 to see what happens. Any suggestions? I just cant copy paste your parameter list since we have some differences.

Thank you!

cjdavies   May 10, 2023 

I didn't change AUTOTUNE_LEVEL but I did have to halve the default P gains before I could fly in a stabilized mode well enough to initiate an autotune - the defaults are far too aggressive for such a small/light platform & it just oscillated madly until I dropped it into manual.

bryon.gaskin.online@gmail   Apr 29, 2021  

Where did you put the VTX Antenna?

cjdavies   Apr 29, 2021 
1

It's mounted on the outside of the bottom access hatch. The Aeropod antenna is specifically designed to mount flush on the surface of foam wings like that.

drmrdude   Oct 03, 2020  

Did you make it under 250g?

cjdavies   Oct 03, 2020 

It's only possible to do under 250g with this plane if you use small LiPo packs. I wanted to use 18650 packs instead, for much longer flight times, so I didn't really bother trying to keep the weight down. Dry weight is 200g then a 2S 18650 pack & some tail weight to balance on the CG properly takes it up to 310-320g.

drmrdude   Oct 03, 2020 

Thanks, I’m considering the Drift for a build as well. Any chance you weighed the plane before FPV equipment? I got a spreadsheet going with component weight and I’m trying to see how much budget I have left for battery.

Great cover photo by the way!

cjdavies   Oct 04, 2020 

I didn't weigh it beforehand, but several sources online say it's 162g which sounds realistic.

sfonkter   Oct 03, 2020  

I loved this plane until I took it to a stupid location and smashed it into some invisible power lines above a RIVER. Swam out and managed to recover everything except the GPS which must have ejected. Haven't gotten around to fixing it up yet, but I really should because it really was such a joy.

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