Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  

Go Back   > >

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.

User Tag List

Thread Tools Search this Thread
Old 03-11-08, 08:17 AM   #1
Thread Starter
Join Date: Mar 2008
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Rear derailleur pulley 10T vs 11T

I have to replace my rear derailleur on my old Trek 1200 road bike. The wheel has an 8 speed cassette. The old derailleur is a Shimano RSX Integrated 8515 and has 10T pulleys. From other posts I have determined that I don't have to find an "8 speed" derailleur. For example, a Simano RD-4500 (9 speed) should work, but I see that 10T pulleys have gone by the wayside. The RD-4500 (and most others) have 11T pulleys. Will an 11T pulley work? I would think that the number of pulley teath would have to be matched with the chain pitch and I would have to find a derailleur with 10T pulleys? But maybe not? Can I use 11T pulleys?
wwisconsin is offline   Reply With Quote
Old 03-11-08, 09:24 AM   #2
Retro Grouch 
Senior Member
Retro Grouch's Avatar
Join Date: Feb 2004
Location: St Peters, Missouri
Bikes: Catrike 559 I own some others but they don't get ridden very much.
Posts: 26,799
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 167 Post(s)
Virtually all bicycle chains are the same 1/2 inch pitch. The 9 and 10 speed chains are a little narrower.

The derailleur with the 11t pulley will work fine.
Retro Grouch is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

All times are GMT -6. The time now is 07:06 PM.