Quote:
Originally Posted by StraightOuttaCanadaEh
which point(s) in the rpm range are you getting vibrations at? Mine starts at 140km/h (87 mph)
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At first it was around that same speed, around 90mph. I used some weighted tape about a third of the way from the transmission output and it went up to around 100mph before it would start vibrating. Rebalancing got it up to around 105mph. It is speed related(or more the RPM of the driveshaft). There is a thread on here somewhere discussing wall thickness, and critical speed attributing to it.