Join Date: Dec 2005
Location: Upland Ca
Bikes: Lemond Chambery/Cannondale R-900/Trek 8000 MTB/Burley Duet tandem
Yup, for a few hundred miles, things loosen up here and there on a new bike. Or even components installed. Cables stretch, spokes seat, springs stretch, unsecured nuts and bolts can work loose.
Just because a shop inspected it doesn't mean it good to go. Know how many sucky mechanics I've ran into?
I had one out of 6 bikes where the calipers didn't move within a couple of hundred miles. Funny thing, cheaper models moved less. Ultegra was the worst offender. My wifes bike took a couple of thousand miles to stabilize the Ultegra calipers.
One thing you can do is take an allen wrench to the bolt that secures it to the frame. DON'T overtighten! Or take it back to the shop. Most shops give you a 90 free checkup/tuneup. Maybe not if you took 3 years to do 100 miles!
Are we talking new bike here?