Re: [CR]shimano crane?

Date: Fri, 14 Oct 2005 15:35:52 -0500
From: "John Thompson" <JohnThompson@new.rr.com>
Organization: The Crimson Permanent Assurance
To: classic list <Classicrendezvous@bikelist.org>
Subject: Re: [CR]shimano crane?
References: <9819978.1129318701830.JavaMail.root@web1.mail.adelphia.net>
In-Reply-To: <9819978.1129318701830.JavaMail.root@web1.mail.adelphia.net>

whiteknight@adelphia.net wrote:
> The top pivot in the Crane is sprung. My understanding is that is how
> they were able to use the slant parallelogram design while Suntour's
> patent was still valid.

The Crane isn't a slant parallelogram, just a drop-parallelogram. Shimano didn't start using a slant parallelogram until the Dura-Ace "SIS" in 1985, after the SunTour patent expired.

--

-John Thompson (john@os2.dhs.org)
Appleton WI USA