Old 07-21-18, 12:05 AM
  #4  
CliffordK
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Originally Posted by Aubergine
You can’t possibly have put on a Biopace chainring by any chance? ;-)
In theory, a Biopace ring can be used on a fixie without a tensioner. It might be a fun experiment.

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As far as thoughts, If you loosen the chain slightly, perhaps the issue wouldn't be as noticeable (which is probably why it showed up when changing tires).

You should be able to tell if the issue is a chainring by putting the bike on the stand and watching if the issue follows the chainring (happens at the same part of the stroke for every crank revolution) or in the rear sprocket (jumps around with each crank revolution, a few times per crank revolution).

Are any of the teeth looking bent, shark toothed, elongated channel, etc. A worn or damaged ring might cause the chain to ride high, and thus be tight.

You could rotate your ring forward one bolt hole to help even out the wear. You probably don't need the pin to protect from dropping the chain to the outside.

Double check your chain isn't getting overly stretched. Precisely Measure 12" of chain (24 half links).
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