Re: [CR] Group Physics here stinks! (on topic)

(Example: Production Builders:Frejus)

From: <NortonMarg@aol.com>
Date: Mon, 3 Jun 2002 12:01:20 EDT
Subject: Re: [CR] Group Physics here stinks! (on topic)
To: bikevint@tiac.net, classicrendezvous@bikelist.org


I did an "order of magnitude" analysis with a physicist friend of mine over the weekend looking in part to see how much energy would be lost in bottom bracket deflection and in part to see if there was any way the frame springing back to center could add to the pedal stroke. The absolute values are limited by the model used, the relative values are sound. Findings: If a frame deflects 10mm, there is an approximate 1% loss in efficiency. If a frame deflects 1mm, there is an approximate .1% loss in efficiency.
Stevan Thomas
Alameda, CA