Originally Posted by jpearl
I just love when simple thoughts come to the simple-minded like myself, usually after the fact as well. Here goes:
One cause of the shudder could be improperlly-toed brake shoes. If those front brake shoes are properlly toed-in, as they are on my Cannondale, they will provide silky-smooth stopping and slowing, as they do. If they are improperly toed-in, they will most likelly provide the front-end shutter as described in the opening post of this thread.
It sounds like the brakes already were toed. If you notice, the steel fork seems to cure the problem. I never experienced this on any of my steel bikes. While aluminum is very light it aint perfect. I hate to suggest buying a new fork because your bike vibrates but that might be the only solution. That or dump the Cannondale and get something else.
Tim