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tsappenfield

11-26-13 07:57 AM

Bcd?

In regards to (Campy?) chain rings, what do the letters BCD mean?
I know this is really a rookie question.
TSAPP

surreal

11-26-13 08:00 AM

B.olt C.ircle D.iameter. Refers to the spider/chainring interface.

RubberLegs

11-26-13 08:16 AM

Here is a link to a chart, easy to measure from bolt to bolt (this is for a 5 bolt layout...most common) to check size of your Ring's BCD
http://www.highpath.net/highpath/cyc...o/pcds/05.html

tsappenfield

11-26-13 08:16 AM

Had no clue. Thanks so much.
TSAPP

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