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

Reply
 
Thread Tools Search this Thread
Old 12-23-08, 01:51 PM   #1
Anthony87
Commuter
Thread Starter
 
Anthony87's Avatar
 
Join Date: Aug 2005
Bikes: 2005 Specialized Hardrock Comp Disc, 2009 Trek 7.3FX
Posts: 94
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Where RD meets frame. The frame hole is stripped.

Is this repairable? The screw that is used to screw on the RD when placed into the frame moves loosely and does not tighten(suggesting that the frame hole is stripped)
Anthony87 is offline   Reply With Quote
Old 12-23-08, 02:07 PM   #2
tatfiend 
Gear Hub fan
 
Join Date: Nov 2008
Location: Reno, NV
Bikes: Civia Hyland Rohloff, Swobo Dixon, Colnago, Univega
Posts: 2,830
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Remove the rear derailleur and see if it is the mounting hole or the bolt that is stripped. If it is the mounting hole then it can be repaired using a Helicoil or similar thread repair insert with the proper thread I would think. Check with your LBS as to whether they can do it.

Many modern frames, aluminum and CF, have replaceable derailleur hangers. If so then order a new hanger and install it.
tatfiend is offline   Reply With Quote
Old 12-23-08, 02:38 PM   #3
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 29,121
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 180 Post(s)
If you don't have a replacable derailleur hanger, you can use one of these:

http://www.biketoolsetc.com/index.cg...-Inserts&q=&s=

Scroll down to items 17 and 18 depending on how thick your dropout is. You will need a 15/32" drill bit to clean up the damaged threads and allow the Dropout Saver to fit. You can buy one of these locally or Bike Tools has them too:

http://www.biketoolsetc.com/index.cg...id=WB-DS/DRILL
HillRider is offline   Reply With Quote
Old 12-24-08, 08:53 AM   #4
Anthony87
Commuter
Thread Starter
 
Anthony87's Avatar
 
Join Date: Aug 2005
Bikes: 2005 Specialized Hardrock Comp Disc, 2009 Trek 7.3FX
Posts: 94
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thank you both for your crucial advice. I should be back on the streets soon!
Anthony87 is offline   Reply With Quote
Old 12-25-08, 11:28 PM   #5
Deanster04
Senior Member
 
Deanster04's Avatar
 
Join Date: Dec 2005
Location: Boulder, Colorado
Bikes: Cinelli Supercoursa 69, Ritchey Breakaway Cross, Mondonico Diamond Extra 05, Coors Light Greg Lemond (built by Scapin) 88, Scapin MTB, Stumpjumper 83, Specialized Stumpjumper M4, Lemond Poprad 2001
Posts: 1,366
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by tatfiend View Post
Remove the rear derailleur and see if it is the mounting hole or the bolt that is stripped. If it is the mounting hole then it can be repaired using a Helicoil or similar thread repair insert with the proper thread I would think. Check with your LBS as to whether they can do it.

Many modern frames, aluminum and CF, have replaceable derailleur hangers. If so then order a new hanger and install it.
Have used the Helicoil method to fix a stripped crank pedal hole and a stem bolt hole on a threadless stem. Both have worked for many years (and Miles) without any problems. Your RD hanger sounds like a good candidate.
Deanster04 is offline   Reply With Quote
Old 12-26-08, 09:10 AM   #6
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 29,121
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 180 Post(s)
Quote:
Originally Posted by Deanster04 View Post
Have used the Helicoil method to fix a stripped crank pedal hole and a stem bolt hole on a threadless stem. Both have worked for many years (and Miles) without any problems. Your RD hanger sounds like a good candidate.
Helicoils do work but for a stripped derailleur hanger, the "Dropout Savers" are much easier to install. Just drill out the old threads and plug in the bushing.
HillRider is offline   Reply With Quote
Reply


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 02:27 AM.