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I have had the Thunderbird cush drive rubber in my bike for 31,000+ miles after the stock one wore out at 35,000 miles. The Thunderbird{not sport) is a slightly tighter fit than stock.

A cush drive with some play in it is still going to jerk the final drive no matter what oil you're using, so either shim it or get a new one. Excessive cush drive play CAN be hard on your gears. And there is no tolerance limits, there should be zero play.



I had an excessive amount of play in my cush-drive after 3000 miles!!! (07 Speedy) I took it to the dealers, they agreed to replace it, no questions asked. After another 3000 miles and if anything, this one is even worse.

However, my dealer is now saying that according to Triumph the amount of play in my wheel is normal and are refusing to change it. I don't have a workshop manual, does anybody know if Triumph list any tolerances or if any freeplay is normal in regard to the cush drive?

I mentioned fitting a TBS cush-drive to try and solve the problem but they are only willing to entertain that idea if I pay for all parts and labour even though bike is still under warranty.

Glenn

www.cliffebonfire.com