MultiWii Quick Tips - Stopping flicking/pulsing motors using LPF 

Its unfortunate on my model the twitching is so bad it will not take off and even hover. :( I think the motors need to be balanced (I got 2 balanced very well) but the mounting mechanism is fairly heavy and not machined with an adequate level of precision. The way is seems to mount is that the a sleeve with threads fits over the shaft and a ring get put on that, and the prop does next, then the last bit screws on, and it stick out a good inch away from the bell of the motor. By that distance, even the smallest imperfection in the weight and balance of the mount will cause it to bend outward as the motor revs up, leading to lots of vibs. I will be if I can replace the bit that screws on with a simple nut instead that has physically less weight and a smaller profile. Looking for different motors, it seems like threads are on the motor shafts themselves and the prop is pressed against the bell of the motor itself, which is a FAR better mounting system and avoids having a bunch of rotating weight far out from the bearings and bell. I'll see what I can do about it after I get a proper prop balancer and make sure mt props are balanced correctly.