Errr.... I've heard "Rapid Rise" is Shimano's trademarked name for what is actually called a "low normal" mechanism. So, are there any late 70's early 80's "low normal" designs?
Doug Stephens western Mass.
-----Original Message----- From: Jerome & Elizabeth Moos [mailto:jerrymoos@sbcglobal.net] Sent: Tuesday, September 21, 2004 9:14 PM To: Doug Stephens; classicrendezvous@bikelist.org Subject: Re: [CR]Classic rapid rise rear der?
Well, the old 40's/50's/60's Cyclo (Benelux) RD's and I think maybe all the pre-parallelogram, cable operated RD's of that era including Simplex and Huret operated that way, but I've never heard them called "rapid rise". I was surprised by the action the first time I rode a 50's bike with this type of RD, but if you study the design a bit it is obvious that this basic design is easiest to execute if you pull back on DT shifters to move the chain outward.
Regards,
Jerry Moos Houston, TX
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