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

Replacing the rear derailleur for the first time

Notices
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.

Replacing the rear derailleur for the first time

Old 08-18-11, 03:47 AM
  #1  
Junior Member
Thread Starter
 
Join Date: Aug 2011
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Replacing the rear derailleur for the first time

Hello.

Last time I was riding (trekking bike), I had a problem with my derailleur. I discovered that the cage was detached from the body (with the attaching screw missing) and was bent in half, hanging on the chain. Now one option is to go to the LBS, but I would prefer to learn how to replace (and choose) the derailleur myself.

Current derailleur: Shimano Alivio, RD-M410
Cassette: Shimano Alivio, CS-HG50-8I (sprockets 11 to 32)

Should I do it myself? What should I look at when I want a more durable RD?
anuxxer is offline  
Old 08-18-11, 04:16 AM
  #2  
Senior Member
 
Join Date: May 2009
Posts: 93
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
To try youself could be a good lesson and starting point for learning about bike mechanics.

A Deore or Alivio rear mech will probably be a good bet.
Boye is offline  
Old 08-18-11, 04:37 AM
  #3  
Senior Member
 
clydeosaur's Avatar
 
Join Date: Aug 2009
Location: Central PA
Posts: 629

Bikes: Cannondale Six5, Specialized Stumpjumper FSR & old Hard Rock

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Good advice. Once you pick up your rear mech, jump on you tube & punch in " installing / adjusting rear derailleur". THere are some good tutorials on their. Set the high & low, hook up the cable, adj. tension & position and go for a test ride.
clydeosaur is offline  
Old 08-18-11, 06:59 AM
  #4  
Bikaholic
 
blamp28's Avatar
 
Join Date: Dec 2006
Location: Western, Michigan
Posts: 1,461

Bikes: Trek Fuel 90, Giant OCR, Rans Screamer Tandem

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
It would be wise to figure out why this happened first. If you replace the rear der. and there is an underlying problem, you will be doing it again.
blamp28 is offline  
Old 08-18-11, 08:14 AM
  #5  
Junior Member
Thread Starter
 
Join Date: Aug 2011
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by blamp28
It would be wise to figure out why this happened first. If you replace the rear der. and there is an underlying problem, you will be doing it again.
I believe I misaligned the chain when I was replacing the wheel a while ago. The problem hasn't manifested earlier because I rarely shift to the lowest gear.
anuxxer is offline  
Old 08-22-11, 12:52 AM
  #6  
Member
 
Join Date: Aug 2011
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I'd say go with the same or similar model derailleur so you won't have too many compatibility issues. A used one might be cheap-ish (maybe $20?)
You might also need a chain tool to remove the chain from the cage.
With changing the rear derailleur, you would also have to install the cable into the new derailleur and you would have to adjust it to shift correctly.
I would recommend you take it to a bike shop if you aren't comfortable adjusting the rear derailleur.
deadend273 is offline  
Old 09-06-11, 06:10 PM
  #7  
Newbie
 
Join Date: Sep 2011
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Sorry to highjack your thread but i'm in the same situation and I need more info from this point.

Originally Posted by Boye
A Deore or Alivio rear mech will probably be a good bet.
I have a busted Shimano acera (RD-M330). How you can make sure you pick the right derailleur to replace the busted one. Can I order a newer model (https://www.chainreactioncycles.com/M...?ModelID=38673) and be sure it will work fine? The older model is long cage also, but smaller pulley like 11 tooth. the freewheel/casette is 8 speed. (11-30)
davidpp76 is offline  
Old 09-06-11, 06:20 PM
  #8  
Senior Member
 
Join Date: May 2008
Posts: 1,215
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Pictures? I am having trouble understanding how you could not notice a detached derailleur cage. It would make an awful racket if it managed to not get sucked into your cassette. In fact I can't even imagine how the bicycle could continue to function at all with the derailleur cage separated from the derailleur.
Dan The Man is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
0ldhippie
Bicycle Mechanics
12
01-31-15 08:22 PM
Candlesticks
Bicycle Mechanics
6
02-20-13 07:39 PM
johnomi
Road Cycling
9
10-08-12 05:57 AM
Savagewolf
Bicycle Mechanics
0
06-22-12 11:44 PM
spd17
Bicycle Mechanics
0
09-10-10 08:16 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

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

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.