[CR]Shimano SIS question

Example: Humor

From: "Scott Goldsmith" <sg8357@getcoactive.com>
To: <classicrendezvous@bikelist.org>
Subject: [CR]Shimano SIS question
Date: Wed, 23 Jun 2004 16:05:52 -0400
In-Reply-To: <CATFOODq6DqaJY4kJSF00001e68@catfood.nt.phred.org>

> If this is off-topic I'm sorry..I'm pressed for time
> on buying a "keeper of the flame" type bike
> with shimano SIS derailleurs. My question is
> (classic content incoming): are SIS
> derailleurs compatible with the older
> friction-type bar-end shifters, like Suntour bar-ends
> older Shimano bar-ends, or even
> Campagnolo bar-ends (classic content
> arrived), or must I use SIS shifters?
> Thanks very much for any
> clarification you can provide...please
> reply off-list as well as to the list.
> Charles "post-1984 shifting systems challenged" Andrews
> *************************************************

You can improve shifting of SIS derailers in friction by swapping top and bottom pulleys. The top pulley "floats" so in friction you can sort of be in gear until you really mash, then it jumps. Hyperglide cogs make this even worse, since they want to shift anyway. Mavic cogs lack the ramps and other hoo-ha, good for friction 9/10 speed.

Scott Goldsmith
Milford, Ohio