Go Back  Bike Forums > Bike Forums > General Cycling Discussion
Reload this Page >

Would a 10 speed rear derailleur work on a 7 speed cassette?

General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

Would a 10 speed rear derailleur work on a 7 speed cassette?

Old 08-07-18, 03:05 AM
  #1  
justanoone
Newbie
Thread Starter
 
Join Date: Jul 2018
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Would a 10 speed rear derailleur work on a 7 speed cassette?

its only a temporary solution until my groupset comes next week, i have a 10s tiagra rear derailleur hanging around tho, would that work on my 7s cassette, 7s tourney sti?
justanoone is offline  
Old 08-07-18, 04:05 AM
  #2  
Lazyass
Senior Member
 
Lazyass's Avatar
 
Join Date: Jul 2008
Location: NC
Posts: 8,173

Bikes: Vintage steel, aluminum, modern carbon disc, single speed, MTB's, the works

Mentioned: 58 Post(s)
Tagged: 0 Thread(s)
Quoted: 1910 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Yes.
Lazyass is offline  
Old 08-07-18, 06:51 AM
  #3  
MRT2
Senior Member
 
MRT2's Avatar
 
Join Date: Jun 2007
Location: Wisconsin
Posts: 5,873

Bikes: 2012 Salsa Casseroll, 2009 Kona Blast, 1997 Bianchi Advantage, 1994 Trek 930.

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 829 Post(s)
Liked 3 Times in 2 Posts
I am thinking it would not.
MRT2 is offline  
Old 08-07-18, 07:08 AM
  #4  
alcjphil
Senior Member
 
alcjphil's Avatar
 
Join Date: Jun 2002
Location: Montreal, Quebec
Posts: 2,977
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 563 Post(s)
Liked 23 Times in 22 Posts
Which version of Tiagra 10 speed derailleur? Do you have an indexed shifter? A Tiagra 4700 derailleur will not work with a 7 speed indexed shifter. A Tiagra 4600 will. If you have a friction shifter, either will work
alcjphil is offline  
Old 08-07-18, 07:54 AM
  #5  
brianmcg123
Senior Member
 
brianmcg123's Avatar
 
Join Date: Oct 2002
Location: TN
Posts: 1,227
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 326 Post(s)
Liked 6 Times in 4 Posts
It would if you have friction shifters.
brianmcg123 is offline  
Old 08-07-18, 08:16 AM
  #6  
Caliper
Senior Member
 
Join Date: May 2014
Location: Michigan
Posts: 768

Bikes: Many

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 250 Post(s)
Likes: 0
Liked 9 Times in 6 Posts
A 10sp dérailleur might not fit the wider 7sp chain.

This site: https://en.wikibooks.org/wiki/Bicycl...ing_Dimensions implies that Shimano derailleurs all have the same motion ratio. If that is true, the index clicks ought to work, but I'm not a Shimano expert.
Caliper is offline  
Old 08-07-18, 08:40 AM
  #7  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 41,632

Bikes: 8

Mentioned: 188 Post(s)
Tagged: 0 Thread(s)
Quoted: 6838 Post(s)
Likes: 0
Liked 215 Times in 179 Posts
The rear derailleur moves continuously in (cable pull) and out (return spring)
between the stroke limit screw settings [high normal type]
"speeds" is the number count of the stack of cogs on the rear wheel..
fietsbob is offline  
Old 08-07-18, 11:02 AM
  #8  
justanoone
Newbie
Thread Starter
 
Join Date: Jul 2018
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
[QUOTE=Caliper;20492949]A 10sp dérailleur might not fit the wider 7sp chain.

It worked but theres alot of noise compared to the old 7s rd
justanoone is offline  
Old 08-07-18, 07:11 PM
  #9  
mstateglfr 
Sunshine
 
mstateglfr's Avatar
 
Join Date: Aug 2014
Location: Des Moines, IA
Posts: 8,272

Bikes: '87 Schwinn Prelude, Black Mountain Cycles Monstercross V4, '89 Novara/Centurion Ironman, '18 Diamondback Syncr, '18 handmade steel roadbike

Mentioned: 76 Post(s)
Tagged: 0 Thread(s)
Quoted: 2967 Post(s)
Likes: 0
Liked 146 Times in 104 Posts
Originally Posted by fietsbob View Post
The rear derailleur moves continuously in (cable pull) and out (return spring)
between the stroke limit screw settings [high normal type]
"speeds" is the number count of the stack of cogs on the rear wheel..
except a 4700 rd is speed specific
mstateglfr is offline  
Old 08-07-18, 08:59 PM
  #10  
justanoone
Newbie
Thread Starter
 
Join Date: Jul 2018
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Its the chrome version man, its the 4601 version
justanoone is offline  
Old 08-08-18, 06:43 AM
  #11  
Caliper
Senior Member
 
Join Date: May 2014
Location: Michigan
Posts: 768

Bikes: Many

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 250 Post(s)
Likes: 0
Liked 9 Times in 6 Posts
Originally Posted by mstateglfr View Post
except a 4700 rd is speed specific
Did Shimano make the motion ratio different on that model?
Caliper is offline  
Old 08-09-18, 01:53 PM
  #12  
MikeyMK
Cycleway town
 
MikeyMK's Avatar
 
Join Date: Jul 2014
Location: Milton Keynes, England
Posts: 1,075

Bikes: 2.6kw GT LTS e-tandem, 250w Voodoo, 250w solar recumbent trike, 3-speed shopper, Merlin ol/skl mtb, 80cc Ellswick

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 400 Post(s)
Likes: 0
Liked 48 Times in 41 Posts
There are varying Shimano derailleur swing ratios, i cannot use my classy polished Tiagra derailleur with my 10sp XT shifter, because the XT is Dyna-Sys and the Tiagra is not. So i have to use the yobbo XT derailleur.
MikeyMK is online now  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ES_IMBA_KIM
Northeast Rides and Events
0
03-19-18 02:31 PM
Jax Rhapsody
Mountain Biking
3
03-04-15 06:35 AM
multiple68
Texas
1
08-29-11 11:45 PM
concernicus
Singlespeed & Fixed Gear
1
03-02-06 08:28 PM
pointyhead
Road Cycling
36
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.