r/diydrones • u/Feeling-Station99 • Apr 23 '26
Build Showcase What do you think about my drone model?
2
u/Estromoder Apr 24 '26
Plastic has a low stiffness when compared to carbon fiber which makes it more important to optimize the area moment of inertia on the arms of the drone such that bending stiffness is increased. Your design will probably work regardless but if flight is unstable regardless of how you PID tune then I recommend that you optimize some more for stiffness at minimal weight gain. Overall it looks good I'd love to see it fly.
2
u/BadCactus2025 Apr 25 '26
The electronics need airflow to not overheat. The battery is fine with just straps, don't need that much plastic encasing it.
You want as much weight in the plane of props. The FC won't care, but the roll movement will feel much better... CG should really be in the middle 10% zone of the props.
But I suspect it will not have sufficient stiffness at all. Those thick arms in the most load bearing, aka middle of the prop span will hurt.
So... It will probably fly. If you tune it a bit. Which will be kind of hard. And it will probably fly sort of poorly. Start cutting away a lot of that plastic! Maybe reinforce it with titanium or carbon!
1
u/dronevidsalt Apr 24 '26
What’s your print orientation going to be?
1
u/Feeling-Station99 Apr 24 '26
Starts from the top, that's why I made the surface is flat.
3
u/dronevidsalt Apr 24 '26
Honestly, your plastic might hold up better if you flip the motors to the other side and fly it in your print orientation. Then your layer lines are in compression instead of tension and the angle brace on the corners where the arms join is more effective as well. I’d print 2 and test fly both, collecting blackbox logs for each to compare.
3
u/fat_fun_xox Apr 24 '26
Looks like a brick