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Old 10-23-08, 06:01 PM
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top506
Death fork? Naaaah!!
 
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Join Date: Nov 2005
Location: The other Maine, north of RT 2
Posts: 5,313

Bikes: Seriously downsizing.

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What you want are Shimano Biopace chainrings.
Just the thing for a fixie.

"People are often astonished to learn that I ride Biopace chainrings on fixed-gear bikes. They imagine that there will be tremendous changes in chain tension as the chainring rotates. In practice, this is not the case. A 42 tooth chainring will generally engage 21 teeth against 21 chain rollers, regardless of its shape.

There is a slight variation in tension resulting from the varying angle between the two straight runs of chain as the axis of the chainring rotates, but this has not generally been of a sufficient magnitude to cause any problem in practice for me."
Sheldon Brown.

If Sheldon didn't have troubles with Biopace you shouldn't have trouble with round Rocket Rings.
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