I have 2 road bikes. The first is a fairly new (about 2 or 3 years) Schwinn and the other is a vintage Schwinn. When riding, both randomly switch gears without me doing anything. The newer bike also has a problem where the chain locks up and I can't pedal, but it only lasts for a few feet. Generally the vintage bike switches gears on me when I hit a bump. Any advice on how to fix this? I'm thinking about taking it into a bike shop to have them look at it but it'd be nice if I could fix it up myself if it's simple enough. I'm more concerned about the new bike since I need it by Saturday for a bike-a-thon. Thanks!
Why do my bikes involuntarily switch gears?
- Thread starter Emily B
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