Bike Forums - View Single Post - How to tell if a chainring is true?

01-28-07, 09:36 PM

#5

Sheldon Brown

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Join Date: Jul 2002

Location: Newtonville, Massachusetts

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Quote:

Originally Posted by Plainsman

When I was riding the trainer last night, I happened to stare down at the chainring and it looked like it was not always a consistent distance from the FD. Is this an illusion created perhaps by rocking the trainer back and forth (and I am working to improve my pedaling technique), or can a big ring actually warp over time?

See: http://sheldonbrown.com/straighten-chw.html

Metal stuff doesn't "warp" over time; if it gets bent it's 'cause something bumped into it.

Sheldon "Planarity" Brown

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