Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take Part in the new April's Giveaway for a Chance to Win the Euybike S4 Pro Max ebike worth $1299


How do I fix my front derailleur?
#1
My front derailleur is completely bent out of shape, how do I get it back in place?

Pics from different angles:
http://i40.tinypic.com/qq281j.jpg
http://i43.tinypic.com/t9z62u.jpg
http://i44.tinypic.com/dlg55y.jpg
http://i41.tinypic.com/23m5404.jpg

Thanks to anyone that helps.
  Reply
#2
Ouch. Ok...
There are two things: the mounting clamp has slipped and the dérailleur cage is bent, quite badly. Unless you are on a really tight budget you should probably get a new one (last year's model or before). Bending back requires: patience, a clue how the dérailleur cage should look like, patience, skill, patience. And as the guy in charge of the workshop in my flying club used to say: you can not unbend metal. There will remain a kink and the structure will be weakened. The chain might just catch the edge and bend the cage again.
Looking at the pics again, it might be done. The bends seem to be not too sharp (for the outer plate)
- Undo screw for the cable
- Remove dérailleur from frame (open clamp screw)
- Open the screw that holds the two cage plates together (to free chain and to work on inner and outer plate separately)
- Using where the inner plate is fixed to the parallelogram, try straightening the inner plate first

(and for me the final step would be: after some hours decide to get a new one, as they are so cheap when getting an older model online, in Germany there's shop.cnc-bike.de who do have old stuff, the FDs start at 5 EUR (7 USD?)).
  Reply
#3
Thanks so much! Looks like I'll be getting a new one then. Smile
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
How to deal with rusty chain
Yesterday 10:49 PM
Front derailer not moving
Yesterday 10:35 PM
Good morning form Alberta CA
Yesterday 07:58 PM
Wearable Fitness Trackers
Yesterday 02:25 PM
The great thing about trikes
Yesterday 11:42 AM
Gu/SiS/Energy Gels replacement
Yesterday 09:22 AM
Looking for an electric bike for someone...
05-03-2025 12:51 PM
What are the best cost effective ways to...
05-02-2025 09:17 AM
Hoping someone can help me identify this...
05-01-2025 09:14 PM
RECOMMENDATION
04-30-2025 10:51 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Painkiller
20 posts
no avatar 2. enkei
16 posts
no avatar 3. meamoantonio
15 posts
no avatar 4. Flowrider
15 posts
no avatar 5. SPINMAN
12 posts