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

New: Take part in the June Giveaway for a brand new Merida Matts 6.5 bicycle


Front derailleur problem
#1
Hi,

I have recently installed a new gear cable as the old one had frayed. I took the opportunity to start from scratch and learn a bit about my bike.

I had adjusted the front derailleur so that it is about 1mm from the largest front chain ring and lined it parallel with the frame. I adjusted the low limit screw so it has a small gap between the derailleur and chain. I then connected the new cable while pulling it taut.

When i shift up it shifts fine onto the middle front chain ring but then jams the chain when trying to shift up to the largest ring. I have tried to adjust the height of the derailleur but not joy.

Any ideas guys? Really don't want to take it to a shop as don't want to be beaten!!!!!

Thanks in advance
  Reply
#2
Have you also adjusted the "Hi" limit screw to make sure the derailleur moves far enough outwards over the big ring?
Also you could try adjusting the cable if there is too much slack.
Ride hard or ride home alone!
  Reply
#3
(06-16-2010, 06:36 AM)cyclerUK Wrote:  Have you also adjusted the "Hi" limit screw to make sure the derailleur moves far enough outwards over the big ring?
Also you could try adjusting the cable if there is too much slack.

Thanks.

I think the high limit screw is ok as the derailleur seems to want to push past the chain but just jams it between the middle ring . Also the cable seems pretty tight.

Could the far left of my derailleur be too close to the chain ring? (Obviously keeping the far right about 1mm from the top)
  Reply
#4
If it was O.K. before the new cable then I would suspect that the dérailleur is a fraction to low if you lowered it. Try lifting it a 1mm to give a 2mm gap.
You say you adjusted the dérailleur to run parallel to the frame?
It should be parallel to the chainrings if it already isn't.
Ride hard or ride home alone!
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
Downtube Shifters on 1991 Miyata 721
Today 01:37 PM
Merida Matts 6.5 Bicycle | June 2020
Today 12:44 PM
Replacement components for 7-Speed Shima...
Today 10:23 AM
Vintage Road Bike Restoration HELP
Today 09:21 AM
Holes in my road tires
Today 09:00 AM
Clunk noise from front cogs
Today 06:14 AM
Hello from south west Florida :)
Today 12:17 AM
1974 Raleigh Sports 3 Restoration Tips ...
Yesterday 11:43 PM
Rust on the handlebar
Yesterday 04:59 PM
Help me identify my vintage Bridgestone ...
Yesterday 04:05 PM

[-]
Top 5 Posters This Month
no avatar 1. Jesper
28 posts
no avatar 2. CharleyFarley
18 posts
no avatar 3. Painkiller
16 posts
no avatar 4. Joe_W
12 posts
no avatar 5. Sagan97
9 posts