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

Fell on rear derailler and now it can't stay in gear.

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.

Fell on rear derailler and now it can't stay in gear.

Old 05-19-04, 12:20 PM
  #1  
slvoid
2-Cyl, 1/2 HP @ 90 RPM
Thread Starter
 
slvoid's Avatar
 
Join Date: Oct 2003
Location: NYC
Posts: 15,762

Bikes: 04' Specialized Hardrock Sport, 03' Giant OCR2 (SOLD!), 04' Litespeed Firenze, 04' Giant OCR Touring, 07' Specialized Langster Comp

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Fell on rear derailler and now it can't stay in gear.

Ok, I slipped on a wet manhole cover and went down on my right side, the rear derailler (not the piece that hangs down with all the cogs but the pod itself) took a hit. The thing won't stay in 4th and 6th anymore. Is there anything I can do at home before I take it to the LBS?
slvoid is offline  
Old 05-19-04, 12:30 PM
  #2  
cerewa
put our Heads Together
 
cerewa's Avatar
 
Join Date: Jun 2003
Location: southeast pennsylvania
Posts: 3,155

Bikes: a mountain bike with a cargo box on the back and aero bars on the front. an old well-worn dahon folding bike

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
is there anything i can do
use non-indexed shifters?

i have found indexed shifting to be nothing but a headache.
cerewa is offline  
Old 05-19-04, 12:39 PM
  #3  
slvoid
2-Cyl, 1/2 HP @ 90 RPM
Thread Starter
 
slvoid's Avatar
 
Join Date: Oct 2003
Location: NYC
Posts: 15,762

Bikes: 04' Specialized Hardrock Sport, 03' Giant OCR2 (SOLD!), 04' Litespeed Firenze, 04' Giant OCR Touring, 07' Specialized Langster Comp

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 1 Time in 1 Post
I have shimano STI shifters, is that what you mean by indexed?
slvoid is offline  
Old 05-19-04, 12:58 PM
  #4  
ImprezaDrvr
Back in the Sooner State
 
Join Date: Aug 2002
Location: Norman, OK
Posts: 2,572
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Yes, those are indexed and no, indexed shifting is not an inherent pain in the butt. Indexed just means that you click to each gear instead of trying to find it without the shifter stopping for you with each click.

As for your problem, it could be that the derailleur is just a bit tweaked and needs to be adjusted, though I fear that it is probably something bent somewhere. It's always hard to tell exactly what got pegged in any kind of fall, so it could be that your derailleur cage is bent a bit. Take a look at it from the top and see if, in the gears that work, the derailleur pulleys all line up with the cog that you're shifted in to. You might also be able to tell at that point if the cage is bent or, worse yet, the derailleur hanger is tweaked a bit.

Also check the derailleur cable and all of the housing that it runs in. If it's kinked from the fall it can keep the derailleur from going where it should. Make sure that the housing is setting where it should be, too. If it gets out of any of the braze ons on the frame, or is just sitting in one funny, it can cause freaky stuff.

Good luck.
ImprezaDrvr is offline  
Old 05-19-04, 01:02 PM
  #5  
cerewa
put our Heads Together
 
cerewa's Avatar
 
Join Date: Jun 2003
Location: southeast pennsylvania
Posts: 3,155

Bikes: a mountain bike with a cargo box on the back and aero bars on the front. an old well-worn dahon folding bike

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I don't know what shimano STI is, but...

"what do you mean by indexed shifters"

http://www.sheldonbrown.com/gloss_i-l.html#index

sheldon brown explains it better than I can.

basically, with friction shifters it's pretty well impossible that you could find yourself unable to get your 4th and 6th gear to work. all you'd have to do is push on the shift lever a bit to adjust and then you'd be in the gear you wanted.
cerewa is offline  
Old 05-19-04, 01:04 PM
  #6  
randya
Senior Member
 
randya's Avatar
 
Join Date: Jul 2003
Location: in bed with your mom
Posts: 13,696

Bikes: who cares?

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
You can at least check to see whether anything is bent...first and foremost is whether the derailleur pulley cage is still parallel to the cogs. If not you've either bent the derailleur and it needs to be replaced, or you've bent the derailleur hanger and it either needs to be replaced or straightened, depending on whether it is integral to the frame or detachable. If the dropout includes an integral derailleur hanger that needs to be bent out, you gotta do this carefully to avoid cracking or breaking it. How you go about this will prob. depend on whether the frame is Al or Fe...
randya is offline  
Old 05-19-04, 01:38 PM
  #7  
slvoid
2-Cyl, 1/2 HP @ 90 RPM
Thread Starter
 
slvoid's Avatar
 
Join Date: Oct 2003
Location: NYC
Posts: 15,762

Bikes: 04' Specialized Hardrock Sport, 03' Giant OCR2 (SOLD!), 04' Litespeed Firenze, 04' Giant OCR Touring, 07' Specialized Langster Comp

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Hehe thanks for all the advice, turns out when my right shifter housing was bent towards me from the fall, that freed up a TINY TINY bit of slack from the cable and that was what was doing it cause silly me, I went ahead to try to fix the derailler without straightening out the shifter housing first. It seems to work now, still not as smooth as before but everything shifts ok.

BTW: anyone know how to loosen that piece of metal that holds the shifter to the bar so I don't have to force it back in place next time?
slvoid is offline  
Old 05-19-04, 02:16 PM
  #8  
randya
Senior Member
 
randya's Avatar
 
Join Date: Jul 2003
Location: in bed with your mom
Posts: 13,696

Bikes: who cares?

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
There should be an allen head bolt hidden in a recess on the underside of the shifter somewhere...
randya is offline  
Old 05-19-04, 03:24 PM
  #9  
ImprezaDrvr
Back in the Sooner State
 
Join Date: Aug 2002
Location: Norman, OK
Posts: 2,572
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
yeah, I think that bolt is only visible when you pull the brake lever. It's behind the lever there and pretty easy to get to as long as you know where to look.
ImprezaDrvr is offline  
Old 05-19-04, 03:30 PM
  #10  
seely
The Rabbi
 
seely's Avatar
 
Join Date: Apr 2004
Posts: 5,125
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 15 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Yeah pull back the flap on the shifter from the front of the shifter, and on the outside of the shifter behind the brake lever (if are facing it, it will be on the left side on the left shifter, right side on the right shifter) there is a hole for a 5mm (?) allen key... you pretty much need a T handle key to get ANY leverage on these stupid things since you have to use the long side of the L shaped key. If you can't find it PM me and I'll take a picture... its tricky to find.
seely is offline  
Old 05-19-04, 08:32 PM
  #11  
slvoid
2-Cyl, 1/2 HP @ 90 RPM
Thread Starter
 
slvoid's Avatar
 
Join Date: Oct 2003
Location: NYC
Posts: 15,762

Bikes: 04' Specialized Hardrock Sport, 03' Giant OCR2 (SOLD!), 04' Litespeed Firenze, 04' Giant OCR Touring, 07' Specialized Langster Comp

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Is it this thing here? How would I loosen + tighten it? Would that metal piece pop out if I loosen it too much?
slvoid is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Towns Finest
Touring
12
08-19-15 10:18 PM
Jarrett2
Clydesdales/Athenas (200+ lb / 91+ kg)
44
12-19-13 08:48 AM
TommyBing
Road Cycling
54
07-17-13 11:46 AM
curiouskid55
Road Cycling
15
11-23-05 08:30 PM
The_Dude
"The 33"-Road Bike Racing
71
08-06-05 02:27 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.