RE: [CR]Campy pedal with tall cage


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Content-class: urn:content-classes:message
Subject: RE: [CR]Campy pedal with tall cage
Date: Sun, 29 Jan 2006 21:57:17 -0800
Thread-Topic: [CR]Campy pedal with tall cage
Thread-Index: AcYlXXUEEOCQFYsFR2+RlIS7nCSd1wAA373Q
From: "Mark Bulgier" <Mark@bulgier.net>
To: "r cielec" <teaat4p@yahoo.com>, <classicrendezvous@bikelist.org>


Richard Cielec writes:
> Ah ! So, a short-legged person could get the mechanical
> advantage of the longer crank? 165 legs with tall cage
> pedals on 170 cranks for 170 mechanical advantage without
> over extending the legs?

No, we set the saddle height based on the bottom of the stroke, but we choose a crank length based on the top of the stroke - because that's what effects the angle of bend in the knee. So if the knee bend you get at the top with 165s is best for you, and the knee bends too much with 170s, it will be the same with taller pedals - 170 will still be too long, by the exact same amount.

Mark Bulgier
Seattle WA USA