TorgueRPM

Maybe your battery's (relative) ability to flex saved you from a fire. The way you protected it within the frame is smart too

Toroidal props seem to do a good job of minimizing vortices too

Sacrificial design is important. A strange balance to strike with a brake lever. If you crash it probably won't matter though, you can...

I feel like I have to brag just a little about my successful experiment: I've been running with my 3d-printed brake lever for the...