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Old 02-16-2009, 01:19 AM
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Clotho Clotho is offline
Motorized Bicycle Elite Member
Join Date: May 2008
Posts: 304
Default Re: My Felt 1903 build progress

It wasn't so much a vibration as it was a twisting action on the bottom bracket. I have had time to think about it and I don't think you will have a problem. I use a shift-kit and the drive is to the bottom bracket. Yours doesn't so the drive goes to the rear wheel. I solved the problem by extending the motormounts to meet at the bottom of the V and added extra U bolts to hold it there. This gave the bottom bracket the added stiffness it needed.
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