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

Rear shifting arm misaligned?

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.

Rear shifting arm misaligned?

Reply

Old 08-11-03, 10:37 PM
  #1  
marvg
Newbie
Thread Starter
 
Join Date: Aug 2003
Location: SF
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Rear shifting arm misaligned?

Hi, my friend owns a mongoose XR 100. Someone was using it and it fell just today. It fell on it's gear side, and the rear shifting arm might be bent in, but I'm not sure. I'm not even sure if it's called a shifting arm. Is 1 inch metal bar that extends from the wheel axle to support the arm supposed to be straight? Or might I try to aleviate the problem tensioning the shifting arm? I tried the latter, and it didn't seem to help much. The extent of the damage has made the shifting arm brush against the spokes, getting caught in them most of the time. I can't make out what's wrong because it looks alright, except the 1 inch metal bar seems a little warped in. On my bike it's straight. But that bar is extremely hard to bend! Any ideas?

Thanks!
marvg is offline  
Reply With Quote
Old 08-12-03, 12:02 AM
  #2  
roadfix
hello
 
roadfix's Avatar
 
Join Date: May 2003
Location: Los Angeles
Posts: 18,601
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 132 Post(s)
That metal bar is the derailleur hanger and it is not supposed to be bent inwards. Unless you know exactly what you're doing, it's best to take it to your LBS and have them take a look. It needs to be re-aligned.
roadfix is offline  
Reply With Quote
Old 08-12-03, 08:55 AM
  #3  
Hunter
NOT a weight weenie
 
Hunter's Avatar
 
Join Date: Dec 2000
Posts: 1,762
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
There is almost no other choice but to replace the der. The rear der. on this bike if the hanger for it is bent is part of the der. A competent LBS could get it close but you could replace it for what a LBS would charge to fix it.
Hunter is offline  
Reply With Quote
Old 08-12-03, 11:04 AM
  #4  
marvg
Newbie
Thread Starter
 
Join Date: Aug 2003
Location: SF
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks, george and hunter. I'll see if I can find a replacement.
marvg is offline  
Reply With Quote

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