how to measure bolt circle on chain ring?
02-26-06 | 06:19 PM
#1
Thread Starter
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Joined: Oct 2004
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From: minneapolis
Bikes: iro mark v 48x16 or 15 i think (fixed), surly 1x1 32x16 (free)
how to measure bolt circle on chain ring?
i bought a campy chainring at the swap meet today here in minneapolis, but didn't buy cranks because i couldn't find any 165s. now i've got this chain ring and i'm sleuthing around on the internet, but have no idea what size the bolt circle is or which cranks are going to be compatible with it. if worse come to worse i can bring it into the shop and see what they have that might fit it, and hope that someone says, "oh, that's clearly the blah blah blah", but i thought i'd check here first.
02-26-06 | 06:34 PM
#6
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Joined: Oct 2004
Posts: 607
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From: minneapolis
Bikes: iro mark v 48x16 or 15 i think (fixed), surly 1x1 32x16 (free)
that does make sense, as there were some very low priced 170mm chorus cranks that i probably should have bought for $65. i was worried about my short wife and the low BB on her bike. guess i blew that.
02-27-06 | 08:01 PM
#7
MADE IN HONG KONG
Joined: Aug 2005
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From: Washington DC
Bikes: some but not enough
135mm indeed. you can also find a nice look up table for BCD/ hole to hole measurement on the branford bike website.
note: my mentioning of the site is for info and reference material, not as an indorsement of their products.
note: my mentioning of the site is for info and reference material, not as an indorsement of their products.
02-27-06 | 08:07 PM
#8
a blend of wit and charm
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From: Chicago
Bikes: Serotta Fierte and a 1989 Centurion Prestige (plus, various others)
Here's Sheldon Brown's page with a lot more information:Sheldon Brown's Chainring page
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Last edited by Moochers_Dad; 02-27-06 at 08:13 PM.
