Technical & Reference Section > Tech and Restoration

130/110 bcd ?

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oldschoolib:
where do you take the measurements from and what size chainring for sugino gt

jT Racing:
From the middle to the middle of the holes. Works near edge to far edge too. It's the pitch of the holes.

mark 2:
110 for sugino

oldschoolib:
thanks for the replies very helpfull
IB

monkian:
These are pretty decent charts :daumenhoch:
http://etchingpathways.wordpress.com/2011/04/15/chainring-bcd-sizing/
http://branfordbike.com/articles/chainrings-pg68.htm

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