Thread: have chainrings ever been made "egg shaped"?
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Old 05-12-08, 02:53 PM
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Nickshu
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Bikes: Clark-Kent Europa Ti Road; Motobecane Fantom Cyclocross

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I used to have Biopace chainrings back in 1989. Haven't seen them since. It was hard to get a smooth pedal stroke at higher cadence with them.
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