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


Example: Books
Date: Thu, 15 Jan 2004 15:40:18 -0500
From: <raleypc@netscape.net>
To: Philcycles@aol.com, classicrendezvous@bikelist.org
Subject: Re: [CR]Elementary Control-Theory Mistake in Jobst's article onShimmy


Maybe we need a friction steering damper like I have on my old Ducati 350. You could tighten it down for those fast hands free downhill runs (grin)!

Paul Raley Keeping my hands tight on the bars in Leonardtown MD

Philcycles@aol.com wrote:
>
>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.