I have a road bike which works perfectly before a flat tire happens on the back wheel yesterday. I took off the wheel to change the inner tube last night. Since the back wheel is connected to the chain, so I had to take off the chain as well. But I put everything back on and took it for a test ride, the chain always came off the gear after a couple of cyclings. I realized the chain may have become loose, so I re-install the wheel a few times to make the chain as tight as I can. But still the problem remains.
Anybody has any idea how to fix it? I really appreciate any suggestions and comments.
Trek 1000, two mtbs and working on a fixie for commuting.
OK, well in a single speed, the chain should not be as tight as you can make it.
Single speed bikes are quite peculiar in their workings, but the only thing I could suggest would be to make sure your chainline is good, but that is a moot point since it worked before, which would imply the chianoline was good enough.
Try loosing it up a little and see if it helps. Also, if it makes any weird noises that it didn't do before, post that too.