Originally Posted by
CptjohnC
Last week, I was all excited about my new chain and cassette. The cassette in particular seemed so much better than my old one because of the shorter reach to the highest (largest) cog, as I went from a 34 to a 30.
I rode several times last week, and all seemed well. This weekend, I went for a fun ride, and about 15 minutes in, as I slowed in preparation for a stop, my wheel suddenly locked up, and I nearly went a$s over teakettle. I knew I had dropped the chain, which I thought was weird enough, but then I looked down and saw this:
So the chain is down between the cassette and the hub, having jumped 'over' the highest cog. I can't get the chain out with 'ordinary' force, and I don't want to make anything worse. My LBS installed the chain and the cassette, so I'm inclined to take it back to them and see what they can/will do.
How likely is it that I'll need a new wheel? Is the cassette toast? How about the chain? Is my loyalty to my LBS misplaced? Was this caused by something they did or should have done (or not done)? I don't ~think~ there was rider error involved, as I was shifting pretty gently, and not pedaling all that hard.
Thanks.
First, this is a limit screw problem. That's one of the few times that I've ever typed that phrase without the 'not' between 'is' and 'a'. It may be because the shop messed with the limits during the install (not likely) or it may be that the screws have been misadjusted for a while and you just happened to have a bad day.
The good news is that it won't hurt the cassette nor the chain. It may have damaged spokes but that usually depends on how hard you were pedaling when it happened and if you kept trying to pedal. In the first picture, it looks a little like you've got a damaged spoke but that may be a trick of the photo. Grab hold of the chain and try to pull it out. Then inspect the wheel for gouges on the spokes. You can even remove the cassette if you have the tools and inspect more closely. If the damage to the spokes isn't too bad, you can probably ignore it since where the damage occurred isn't in a high stress area. If you've gouged out a significant amount of spoke material (roughly 1/4 or more of the diameter) replace those spokes.