RE: [CR]Short wheelbase frame design question

(Example: Framebuilding:Paint)

Date: Tue, 22 Mar 2005 08:59:15 -0500
From: "Steven Willis" <smwillis@verizon.net>
Subject: RE: [CR]Short wheelbase frame design question
In-reply-to: <BAY101-DAV1303EDC30EBBC44A639A05AB4E0@phx.gbl>
To: "'Dan Christopherson'" <danlchris@hotmail.com>, <classicrendezvous@bikelist.org>


Unless you sprint like me then it will never happen. Steven

The Bike Stand 1778 East Second Street Scotch Plains NJ 07076 908-322-3330 http://www.thebikestand.com

-----Original Message----- From: classicrendezvous-bounces@bikelist.org [mailto:classicrendezvous-bounces@bikelist.org] On Behalf Of Dan Christopherson Sent: Monday, March 21, 2005 10:26 PM To: classicrendezvous@bikelist.org Subject: Re: [CR]Short wheelbase frame design question

One of the problems with the lateral chain and sprocket drive of the conventional bicycle is that the right side (with normal right side drive train) of the rear triangle undergoes compression from pedaling forces. This tends to pull the rear wheel to the right. This force (and the corresponding reaction of the wheel) varies proportionately with the ratio of the chain line distance to the chainstay length.

In other words shorter chainstays equal tendency for the rear wheel to skip or hop sideways during high pedal torque and even more so when using the higher (more outboard) gears.

Dan Christopherson
Lopez Island WA