Vibration at higher speeds

[turbine tester]

Hey all,
I have been chasing a vibration in my attak for a while. It had a noticeable vibration at 60 mph which turned out to be the secondary clutch bushings. Now it has a vib at 70-80 and up, almost feels like the track is hitting the tunnel protectors. All wheels are good, new bearings everywhere, newish slides, new belt, new 1.25 ripsaw and was also vibrating with the 1.25 ice rippper XT I took off. The track is set to spec with 22 lbs of pull. How much tighter can I set the track? Has anyone had this issue with a 1.25? The tunnel protectors are pretty polished from the track lugs contacting it for sure.

 

[shanksRX-1]

Is it possible you have a slightly bent driveshaft? I had a similar vibration that turned out to be the belt but if yours is new it's probably not the problem.

 

[turbine tester]

Is it possible you have a slightly bent driveshaft? I had a similar vibration that turned out to be the belt but if yours is new it's probably not the problem.

Do you mean the lower shaft or the upper with secondary clutch attached to it?

 

[WinderFab]

Driveshaft is the lower one.

 

[shanksRX-1]

I was thinking the lower shaft. If it took an impact at any point could possibly have a small tweak in it.