August 25, 2008
I bought an old 12-speed Schwinn bike a while back for twenty bucks. Unfortunately I discovered the chain regularly jumped off the sprocket when shifting. I took it to a bike repair place and was informed that I was looking at seventy dollars in parts and that didn’t include labor. I decided to fix that bike myself.
The front sprocket was the problem. It was all beat up and bent and rubbing on the derailer, so I decided to remove it and replace it with a new one. I worked forever trying to remove the front drivetrain, but it would not come off, so I jumped to my tried and true last resort option. I took a hammer and tried to beat one of the peddles off. That did not work either.
I decided if I could not remove the damaged sprocket I would just have to repair it. I took a wrench and a hammer and beat the tar out of the teeth of that sprocket until I got every last one of them in line… sorta. That’s what you call fixing a bike old school.
I am happy to report that after repairing this bike I was able to ride it proudly around our neighborhood. It now has only four working speeds, two high and two low… but how many speeds do you really need on a twelve speed bike, anyway?