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

New: Take part in the November Giveaway for a Single Speed Cruiser bike from Custom Villy


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
Bike is Creaking on the left side during...
Today 01:30 AM
Finding out how old my shears bike is
Yesterday 07:01 PM
New Zealand flag design with a cyclist
Yesterday 06:51 PM
Newbie
Yesterday 06:49 PM
Gears slipping
Yesterday 02:10 AM
Bike recommendation
11-30-2020 04:18 AM
Gravity Bike Crank
11-29-2020 07:08 PM
Biking in the rain
11-29-2020 04:57 PM
UCI Cyclo-cross World Cup
11-29-2020 04:33 PM
Brake pads and metallic pieces
11-29-2020 12:58 PM

[-]
Top 5 Posters This Month
no avatar 1. Jesper
49 posts
no avatar 2. Painkiller
19 posts
no avatar 3. Nikko
11 posts
no avatar 4. G_M
10 posts
no avatar 5. Sagan97
8 posts