loose flywheel/collet question
 

I have a xxxnt rtr

every time i run it the flywheel gets loose

I cant tell if the flywheel is getting loose from the collet or if the collet is loose form the drive shft or both. I do use thread lock and i do reef on it when I put it on - but somehow it gets loose during the driving

ive used shims to try to make the collet grab the shaft at a different spot and that helped a little bit, but it still came loose in the main

has anyone ever seen this/ know how to fix

Are you using the Losi collet? If you aren't sure, get a new Losi collet. The Losi collet has a different taper than the collet that comes with most engines. If your RTR engine is stock, it probably has the proper collet. I would just get a new collett anyway. Also inspect the ID of the flywheel for defects or scars from spinning on the collet. If it is damaged, get a new one.

If all that checks out, use 1 drop of red loctite on the crank threads. It should not be coming off.

Same thing happened to me....
 

My flywheel worked itself loose on my XXXNT-RTR on about the third run. It also flared out the opening on the flywheel, so I just bought a new collet/flywheel set and cinched it down good. No troubles since...

Probably would save you lots of grief if you do the same thing....instead of trying to re-use the flywheel.....

good tips - im gonna get a new flywheel and collet. I already rplaces the collet with a losi one, but I think I should probably also get a flywheel.

Ive even thought of scuffing the flywheel and collet to get friction - but it doesnt sound like that would be a good idea

No, dont rouch up the collet or flywheel.

The RTR OEM flywheel is probably of lower quality than the new flywheel you will get from your hobby shop. I'll bet when you replace both pieces you will be good to go.