Thursday, May 02, 2013

Sloppy front shifting: beyond the Marvin Bolt

The owner of this front derailleur complained that it wouldn't shift easily to the big ring and kept dropping the chain off the inside when shifting down.

If you look closely at the picture you can see the pressed-in pivot pin trying to crawl out. The cage could shift a couple of millimeters under pressure, creating the problems noted by the rider.

I pressed the pin back in so the guy can ride until his new derailleur comes in.


Steve A said...

He's in double trouble if he also owned the wheel in the last post!

cafiend said...

As a matter of fact he does. I do what I have to do, but I'm looking forward to the day I find stress cracks in the rim or some other legitimate reason to advise him to get something that's not such a pain in the ass to maintain.