Before Biopace there was Bullseye!

pete_mcc

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I know that there were many before these, but I'm a big fan on oval rings: Biopace on my Roberts, Chris Bell on the Fat Ti, these type ones on the Turner from time to time. Just got to make sure they are correctly oriented - 90 degrees around from shimano's orientation to work properly.

Load more info here: http://www.highpath.co.uk/cycles/ovals/01.html
(quality beardy stuff...)
 

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who'd you rather buy top retro chainrings from:
 

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Retro has got to go the Beardy Path, every time...........

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Qaulity diagrams too..............*sits sniggering at graph*
 
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