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From: kimr@azure.UUCP (Kim Rochat)
Newsgroups: net.bicycle
Subject: Re: Touring derailleurs, specifically the Duopar
Message-ID: <414@azure.UUCP>
Date: Thu, 15-Aug-85 21:11:01 EDT
Article-I.D.: azure.414
Posted: Thu Aug 15 21:11:01 1985
Date-Received: Mon, 19-Aug-85 07:39:59 EDT
References: <157@uw-june> <151@vice.UUCP>
Organization: Tektronix, Beaverton OR
Lines: 22

> A derailleur that I haven't tried but that looks interesting is the
> Shimano Super Plate, a double pivot/movable jockey pulley design intended
> to equal or exceed the Duropar's performance. (...)
> If you're into very wide gear ranges and bulletproof shifting this may be a 
> possibility.  Anyone out there had any experience with the Super Plate?
> 
When I ordered my tandem, I requested a Duopar rear derailleur.  The
builder refused, claiming that the Shimano Super Plate was much more
durable.  The bike was actually delivered with a SunTour LeTech since he
hadn't gotten in a Superplate.  I used it for 3 months, and had trouble
with it shifting either too far or not far enough at both extremes.
Repeated adjustments didn't help. The tandem has barcons, which do indeed
make shifting somewhat vague, but you don't really want to take your
hands off the handlebars on a tandem :-).

Anyway, the builder exchanged the LeTech for a Superplate, which I find
to shift much more positively, particularly under load.

The gearing is 24/44/48 front, 11-32 rear.

Kim Rochat
tektronix!azure!kimr