hessracing
Member
Hey guys sleds running good now now when i get it goin about 60 on up it seems to vibrate i think the track maybe loose when i pick up the back end the track sags about an 1.5" pretty sure that it could be the problem it is a newer stock yamaha track the finger one
If its sagging 1.5" just from the weight of the track Id say its deifnitely loose, but if it was too loose youd probably notice some ratcheting on take off??
My second thought would be driveshaft bearings, were they changed when the track was?? Is your speedo working properly??
Either way Id try tightening the track and see if it makes a difference, I think Yamaha says it should be 1" with 20lbs of pull on the track (I use a fish scale works awesome)
I usually dont go as tight as Yamaha says, cause thats super tight, Id go about 2" with 20lb pull
Also check for any large ice chunks in the rear skid
My second thought would be driveshaft bearings, were they changed when the track was?? Is your speedo working properly??
Either way Id try tightening the track and see if it makes a difference, I think Yamaha says it should be 1" with 20lbs of pull on the track (I use a fish scale works awesome)
I usually dont go as tight as Yamaha says, cause thats super tight, Id go about 2" with 20lb pull
Also check for any large ice chunks in the rear skid
hessracing
Member
The sled doesn't have a ratcheting sound when it takes off... anything over 50mph and it vibrates i dont believe the bearings were changed :s i know the suspension is set super soft as well I'm going to tighten it up and stiffen the rear up and hope it takes care of it! 
thanks for the imput ill keep ya guys posted!
thanks for the imput ill keep ya guys posted!