Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

shimano ultegra derailleur

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

shimano ultegra derailleur

Old 06-27-06, 05:32 PM
Riding With Scissors
Thread Starter
mattzees's Avatar
Join Date: Jun 2005
Location: Brooklyn NY & Richmond VA
Posts: 91

Bikes: 2002 Specialized Allez Comp, 1995 Richard Cunningham Nishiki MTB, 2006 Specialized Langster, SUN EZ Speedster SX

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
shimano ultegra derailleur

I just popped a spoke on my rear wheel. I was going pretty quick, the spoke got caught in my chain, and wrecked my rear derailleur. It's completely bent up, missing a gear, etc.

I have a full Shimano Ultegra group, double in front, 9-speed in the rear. I need to buy a replacement derailleur, and I see a bunch on EBay, but I have some questions first:

1) Some of the derailleurs I see listed are described as "triples". I thought all 9-speed Ultegra rear derailleurs were the same. Does it matter if my front gear is a double or a triple? Why would this affect which model or rear derailleur I buy?

2) What is the difference between long-cage and short-cage derailleur? How do I tell which one I currently have? Does one perform better than the other?

3) Is there a model numer on my derailleur somewhere that I'm just not seeing? A model number would make things a lot simpler.

"So, what do you think of our mountain?"
"Tastes pretty good..."
mattzees is offline  
Old 06-27-06, 05:59 PM
Keep on climbing
Join Date: Apr 2004
Location: Marlborough, Massachusetts
Posts: 2,179

Bikes: 2004 Calfee Tetra Pro

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
A "triple-compatible" rear derailleur is the long-cage version. Due to the small size of the granny gear on a triple, the derailleur has to be able to take up a lot of chain slack; therefore, the long-cage version is (usually) needed for triple setups.

Long cage derailleurs shift a tiny bit slower then their short-cage counterpart, but both will work just fine with double-cranksets.

Long cage picture here.

Short cage picture http://bike.shimano.com/catalog/cycl...=1151452708914.

Those pages also contain the model numbers, although I don't know if they're easily visible (I don't have an Ultegra derailleur in front of me). You should be able to determine which you have from the pictures as the long-cage version is pretty long.
KevinF is offline  
Old 06-27-06, 09:06 PM
Senior Member
capwater's Avatar
Join Date: Dec 2004
Location: Quahog, RI
Posts: 1,509

Bikes: Giant TCR Comps, Cdale R5000, Klein Q-Pro, Litespeed Siena, Piasano 105, Redline Conquest Pro, Voodoo Bizango, Fuji Aloha

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Ultegra rear derailleur model number RD-6500.
capwater is offline  
Related Topics
Thread Starter
Last Post
Classic & Vintage
01-11-12 01:48 PM
Training & Nutrition
08-13-07 08:11 PM
Road Cycling
05-31-06 12:56 PM
Road Cycling
09-08-03 12:07 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.