Biopace chainring - what size crank?

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  • i tried to fit the biopace chainring on my sugino cranks(130pcd) but they were too small. anyone know what size cranks will fit the biopace?

  • 110??
    and why do you want to fit a bio pace?

  • The biopace rings I took off a Shimano 600 chainset a few years ago were 130, perhaps they came in several PCDs??

  • For instance, the smallest Biopace for the 74 mm bolt circle is a 26, but you can get a 24 tooth round ring in that size. For the 110 mm bolt circle the limit is 36 teeth Biopace vs. 33 teeth round; for the 130 mm bolt circle, 42 teeth Biopace, 38 teeth round.

    indeed

  • yeah just found out i will need a 110 crank - form here [ame="http://www.bikeforums.net/showthread.php?t=437803"]Chainrings: Aluminium or steel? Biopace? - Bike Forums[/ame]

    just want to try it out on my commuter bike.

    my biopace is 48T?!

    Sam - how do they ride? any difference from normal round chainrings?

  • i hope your not going fixed on an oval ring

  • nah - ss

  • BioPace are quite nice... I like them on my old touringbike.. Never tried running one on a fixed gear though. Sheldon says its no problem riding them fixed.

  • why not just get an normal crank/ring?

  • I've got biopace cranks as well and wanted to know whether anyone had experience with them. I'm still looking for a 48teeth chainring that will fit on them. Must the bb be changed as well? Anyone!!

  • Dude, bin the chainring - they aren't worth their weight in scrap.

  • Just get any 130bcd..

    If you run gears just keep running the BioPace until it's worn out.

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Biopace chainring - what size crank?

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