Re: [CR]Bolt Circle Diameters

In-Reply-To: <20050223153846.46528.qmail@web40712.mail.yahoo.com>
References: <20050223153846.46528.qmail@web40712.mail.yahoo.com>
Date: Wed, 23 Feb 2005 11:15:36 -0500
To: David Feldman <feldmanbike@yahoo.com>, classicrendezvous@bikelist.org
From: "Sheldon Brown" <CaptBike@sheldonbrown.com>
Subject: Re: [CR]Bolt Circle Diameters

David Feldman asked:
>To the mathematicians on the list--is there a formula
>for calculating BCD from bolt-to-bolt distance?

Sure. For 5-bolt systems, multiply by 1.7

This and many other bicycle questions is answered in my online Bicycle Glossary.

The relevant entry is at http://sheldonbrown.com/gloss_bo-z.html#bcd

Sheldon "http://sheldonbrown.com/glossary" Brown Newtonville, Massachusetts +----------------------------+ | Lend me ten pounds, | | I'll buy you a drink | | --Shane McGowan | +----------------------------+ --
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