I have a scratch-built quad that has worked well for a while, but now I'm having a problem with vibration. Here's a video with the best illustration around 1:03:
https://www.youtube.com/watch?v=Cn9CU-h9d40
I can think of at least four possibilities for the problem:
1) the thin fiberglass motor support is too flimsy (Hobbyking X580)
2) the motor shaft got bent in a crash
3) my prop is way out of balance
4) the arms aren't locked in place tightly enough (they pivot, and I leave them intentionally somewhat loose to allow better energy absorption during crash landings...this is my dev airframe)
Has anyone seen behavior like this before? Which cause do you think is the most likely primary driver?
Replies
Oh no tighten those arms right away you are dealing with an unknown on every flight otherwise.
Do you think that's probably what's causing the vibrations?