Re: [CR]Elementary Control-Theory Mistake in Jobst's article on Shimmy


Example: Framebuilding:Tony Beek

From: Philcycles@aol.com
Date: Thu, 15 Jan 2004 15:03:27 EST
Subject: Re: [CR]Elementary Control-Theory Mistake in Jobst's article on Shimmy
To: classicrendezvous@bikelist.org


In a message dated 1/15/04 11:38:56 AM, gillies@cs.ubc.ca writes:
>lots snipped
>
>Imagine that a bike shop customer tried two bikes of the same model,
>and they were adjusted more or less the same, and one of them shimmied
>while the other one didn't. This would support my theory.
>
>- Don Gillies

Without geting into the shimmy arguement-which I could-let me just say that the tight HS solution causes another problem known as "Dutch roll" where the bike will not ride in a straight line but swerves gently from side to side.
Phil Brown
San Rafael, Calif.