4" ultralight walksnail toothpick

By Alurpal on Jul 10, 2023

10  0  3

Wanted to build an efficient, quiet, sub250 freestyle quadcopter that uses walksnail. I went with 4" biblades on 1404 3800kv motors, toothpick frame, aio 20a 32bit esc/fc, elrs, and avatar 1s. I'm getting 6-8 min with a 4s 450mah battery. Betaflight 4.4 was an easy tune with just increasing P:D via osd menu and then increasing feadforward till it felt good.

I cap the motor output to 80%. Hover was around 14% which left the low end a little too sensitive for my likinf so i fly with 25% expo and center it around hover. this dramatically helps with throttle control around the hover point.

Here is onboard footage with some lens correction applied. Started to rain so I cut it early, prob had 50% battery remaining.

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Madcatmike3d   Sep 10, 2023  

It's not being powered off of a 5v source, so I assume it isn't running the Avatar 1s vtx?

Alurpal   Sep 11, 2023 

it is the 1s vtx. im powering it from 5v rail on my fc. no issues so far. (note: ive had issues powering it from 5v on a 1s quad when voltage got below 3.1, but that doesnt seem to be a concern on 3-4s)

nathangw   Jul 22, 2023  

nice build

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