I've got an old Cannondale mountain bike with an equally old XT crank set, 5 arms on the spider, with about 55mm between the adjacent bolt holes. Can anyone do the math to figure out what the diameter of the spider's bolt circle is? I suspect 94, but I'm not sure.
San Gabriel, CA
Mtbr's 2016 Winter Biking GearReviews and Roundups
Results 1 to 3 of 3
Thread: "BCD" question