thebroketeenager
New member
Hey all it's been a while since I've last posted here but I hope that someone might be able to help me. Just recently I "completed" my bigger minibike, with a 212 and an ebay 30 series TAV. I'm having some serious issues with vibration at nearly every rpm. I believe that the issues are in the driver unit, as I can actually see the outer 'bell' piece wander back and forth with RPM. The thing is though, it didn't shake like this when it was new. Granted, it is about a year old now.
So far the only thing I've done is balance the driver weights with one another. Nothing fancy, I just took them apart and weighed them on a scale and ground off material until they were within a gram. I redressed the mating surfaces on them as well, as they were not worn evenly. I also put two pins in the weights opposite each other, so that I can put the spring ends in them so they don't wander around. (The pins were installed before the balancing was done.)
After all that the problem got better, but its still enough to shake your fillings out. I'm beginning to think it may be a bent PTO, but I doubt thats the issue tbh. Righ now I'm thinking it might be how sloppy the driver sheave is on its shaft, but I'm not quite sure how to fix that.
Any ideas to fix this? Id really like to be able to ride this thing without my hands and arms going numb.
So far the only thing I've done is balance the driver weights with one another. Nothing fancy, I just took them apart and weighed them on a scale and ground off material until they were within a gram. I redressed the mating surfaces on them as well, as they were not worn evenly. I also put two pins in the weights opposite each other, so that I can put the spring ends in them so they don't wander around. (The pins were installed before the balancing was done.)
After all that the problem got better, but its still enough to shake your fillings out. I'm beginning to think it may be a bent PTO, but I doubt thats the issue tbh. Righ now I'm thinking it might be how sloppy the driver sheave is on its shaft, but I'm not quite sure how to fix that.
Any ideas to fix this? Id really like to be able to ride this thing without my hands and arms going numb.