right angle adapter for rear derailler?

Discuss light weight issues concerning road bikes & parts.
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motorthings
Posts: 336
Joined: Mon Nov 17, 2008 9:56 pm

by motorthings

i don't know what else to call it, but i have seen them on a few different bikes, and am wondering their purpose and effect. i have seen them on different brands of rd's, so assume it is an aftermarket thing.

anyone know what i am talking about?

by Weenie


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bura
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Joined: Mon Mar 01, 2010 8:07 pm
Location: Civitatis Vaticanae

by bura

You probably mean a tool which is centered at the RD hanger before installing the RD. You install the rear wheel and by turning the tool around you can measure but also help to install a perfect parallel to the rear wheel and casette mounted hanger and afterwards a perfect alinged RD.
Or does some other kind of adapter exist ?
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motorthings
Posts: 336
Joined: Mon Nov 17, 2008 9:56 pm

by motorthings

nope, it is something that is installed onto the rear der and used while riding. it looks like it allows a tight 90 degree bend for the cable while possibly reducing the friction normally caused by such a tight bend (at least that is my guess).

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OrPe
Posts: 248
Joined: Wed Oct 18, 2006 10:15 am

by OrPe

Image

This thing? the avid rollermajig...

not sure, but i think they do not make it any more.

Oren

milkbaby
Posts: 182
Joined: Mon Dec 26, 2011 9:04 am

by milkbaby

Jtek shiftmate?

Image


It lets you run Shimagnolo shifting/drivetrain:
http://jtekengineering.com/shiftmate.php

motorthings
Posts: 336
Joined: Mon Nov 17, 2008 9:56 pm

by motorthings

cool, that makes sense...thanks for the answers!

by Weenie


monkeyburger
Posts: 113
Joined: Mon Mar 26, 2012 2:45 pm
Location: Bali, Indonesia

by monkeyburger

Another shot of a Jtek shiftmate on my Cervelo. Campy Chorus 10 speed shifters DA 7800 RD and Ultegra 12-27 9 speed cassette. Very smooth.

RS RD Shiftmate.JPG


monkeyburger
...finding my inner Onoda-kun...

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