In my case Dave, page one, second reply ; "I put it up on jack stands and ran it up to the speed that the rear end hopping starts at, that be right around 45mph, and it was fine on the stands, no back end throbbing or related vibration other than the normal vibration one would expect from a machine running at 45mph."
So again, in my case, it's not the drive line that's setting up the vibration.
Yeah Bill, when I'm running down the road at 45mph, when I yell at my wife the "vibrato" makes it sound like I'm singing to her!
I've been giving some thought to getting someone to follow me with a camera and film it. I can then take it home and study it and see if I can isolate where it's coming from.
Also it is cyclic pulsing a couple of times a second. This is, typical of something being out of balance, but I'll be danged if I can see where.
Denny G
