New shimano derailleur question

It's the whole low normal / high normal thing ... see:

sheldonbrown.comgloss i l.htmlOpen ↗

I dunno, I got one of those rear derailers and I like it just fine. Makes downshifting the back a
little easier, which is more important and useful to me than upshifting for my MTB. I won't nitpick
any technical stuff about the design, except that the system I put together this summer shifts
better than anything else I ever had, that's good enough for me.

What do you call a "regular" shifter? If you're talking about the old rabbit ears, the flappers will
shift in opposite directions in regards to low and high as far as I know, although I never used that
old tech with the new tech.

If it bothers you that much, I'll trade you for a nice early 80's SunTour U series derailer (c:

Seriously, why don't you try it out and see how you like it first. If it works it works. Step up to
indexing too, you might like that as well (and give up AOL for Gods sake!).

C.Q.C.

"Marnu" <[email hidden]> wrote in message "]news:[email hidden]...

Quoted message said:

OK. So I'm innocently collecting parts to cobble together a new beater/commuter/outoftownvacation
bike. The rear derailleur is 9sp. XT.

It is

Quoted message said:

designed so that as the cable pulls the parallelogram the pulleys move

outward

Quoted message said:

from the centerline of the bike. This is opposite of every other rear der design I've seen. What
kind of aberration, freak of nature, monstrocity

is

Quoted message said:

this???? Have I just been out of touch with bike tech too long? Here's the question: Does this
design work with a regular shifter? I

mean,

Quoted message said:

how many ways are there to design a shifter? (pull on cable = gear shift; release cable tension =
gear shift) Except in this case pulling on the

cable

Quoted message said:

will shift to a SMALLER COG!!!!! What up? The shifter in this case is an

LX

Quoted message said:

9sp. You can probably tell how this whole thing goes against my grain. It

seems

Quoted message said:

that pulling on the cable can potentially exert more force than can be

created

Quoted message said:

by the return spring in the parallelogram -- AND -- that the more force is needed in shifts to
larger cogs. Am I missing something here? Cliff "lurching into oldfartdom" Shaw

marnu-<< The rear derailleur is 9sp. XT. It is designed so that as the cable pulls the parallelogram
the pulleys move outward from the centerline of the bike. This is opposite of every other rear der
design I've seen. What kind of aberration, freak of nature, monstrocity is this???? >><BR><BR>

Ya can say that twice, twice. Called 'Rapid Rise' by the shimano marketing boys and girls or
'Backfire plus' by bike shops. Designed to try to take Sram outta the marketplace, IMO. Find a
'standard' rear der, many available, XT as well.

Marnu<< Does this design work with a regular shifter? >><BR><BR>

yep, just 'backwards'...

Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
(303)440-3535 vecchios.comvecchios.comOpen ↗ "Ruote convenzionali costruite eccezionalmente bene"

Marnu said:

OK. So I'm innocently collecting parts to cobble together a new
beater/commuter/outoftownvacation bike. The rear derailleur is 9sp. XT. It is designed so that
as the cable pulls the parallelogram the pulleys move outward from the centerline of the bike.
This is opposite of every other rear der design I've seen. What kind of aberration, freak of
nature, monstrocity is this???? Have I just been out of touch with bike tech too long? Here's
the question: Does this design work with a regular shifter? I mean, how many ways are there to
design a shifter? (pull on cable = gear shift; release cable tension = gear shift) Except in
this case pulling on the cable will shift to a SMALLER COG!!!!! What up? The shifter in this
case is an LX 9sp. You can probably tell how this whole thing goes against my grain. It seems
that pulling on the cable can potentially exert more force than can be created by the return
spring in the parallelogram -- AND -- that the more force is needed in shifts to larger cogs. Am
I missing something here? Cliff "lurching into oldfartdom" Shaw

If you don't like it, change it. But that design goes back a long way ( way before my time and
through the Suntour Skitter of the late sixties) It works as well as any.

--
Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971

Thanks to you all who are putting my fears to rest. I'll go ahead and put down the ball peen hammer
o'death, allow the derailleur to live, and install it. If it works, fine; if not, I'll follow
Peter's advice.

Quoted message said:

What do you call a "regular" shifter?

What I was thinking of here is a shifter which, when increasing the tension on the cable, intends
for the chain to shift to a larger cassette cog. I see now that this is completly a function of
the design of the derailleur. (And that thinking a component "intends" anything is a little around
the bend.)

Thanks Cliff