i just replaced my chain and front,rear sprokets due to being worn out and rear sproket being warped. and it was causing my chain to jump and make some really scary popping sound but not jumping teeth or coming off. now that I have a new chain and sproket and all new bairings I am running into the same problem again if I have it on my stand and put it in gear the chain is jumping around. so I guess my Q is should I be cocerned.

 

Please tell me that you're not running your bike while its on the stand.

Check that you're using same size chain & sprockets.

Verify wheel alignment. Make sure your axle is same on both sides in swingarm.

 

+1 gotcbr

Look down the chain at the top, is it a straight line? Or does it 'dog-leg"?
How much slack at the center of the chain's lower run? Should be no more
than 1" total travel, max.

It is NOT normal behavior and you shouldn't ride the bike until you get this
figured out. If the chain 'jumps', it can lock-up the rear wheel without any
warning. THIS IS A BAD THING.

Hope you get this figured out, let us know.

Ern

 

I had that too when I bought my F4 (with worn chain). My allignment was off.