Crazy oscillations [Solved]


#1

Hey guys,

Just finished up a new build, 90mm brushless. Idle throttle is fine, no flipping etc. When throttling up, I get these intense audable and visual oscillations. Not even off the ground yet.
When hovering for a second it looks like ?yaw movement, but it just sounds so nasty I land.
P’s on 10 doesn’t make a difference. Motors spin freely and the screws don’t appear to be touching the windings.

Little bit at a loss as to what’s going on.
Any tips/advice?


#2

1 -Bent motor shaft or unbalanced prop are the simplest things to troubleshoot
2 -Filter setting issues or FC vibrations are more difficult to troubleshoot.

I bet it’s a prop.

HTH


#3

The motors spin freely and the props are new.

I’m on PT1 dynamic filtering with all filters enabled. Motors are hot as it is without disabling them


#4

Try different props anyway, sometimes they come unbalanced from the factory. What are the current PIDs?


#5

At the moment just default Betaflight.
Tried new props but no difference.
The FC has one of those sensitive gyros in it, and I can’t shift that’s it’s at fault.
New flight controller on the way.

Thanks for the suggestions guys.


#6

The props need to be secured with two screws.
I thought one was enough for testing.
Easy fix