Hey All,
I need some insight. It seems my f40 has developed a wobble in hover- it isn't a vibration, more like a low frequency dolphin effect. i landed and did some low rpm checking and it appears my main gear has a wave to it when spinning...what could this be from? it seems to transfer up to my swash plate and all the way up to the core (my tesing was with blades removed to eliminate them as a balancing problem)...

could my main shaft be bent? Anyone else have this problem?

Thanks