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


Front Derailer Rubbing Noise
#1
Alex,
I have a Trek 7.5FX, with a triple up front and 9 cogs in the back. Typically when riding to work (20 miles round trip). I stay in the 2nd chain ring up front and use most of the nine cogs in the back.
It has been adjusted so that the higher gears are not rubbing but when I am going up a steep hill and have to go to a low gear (#3) it begins to rub. It also rubs in the highest gear, #9.
Should I expect to be able to use all 9 gears in the rear without having the front derailer rub when on the 2nd chain ring?
Is the front derailer not parallel to the bike frame?

  Reply
#2
The outer cage of the front derailleur is generally set parallel to the largest front chainring. There should also be about 2mm clearance between the bottom of the front derailleur cage and the top of the largest chainring teeth. If it stills rubs, try playing with the front derailleur angle slightly one way or the other.
Maybe this video will help:<br />
http://bikeride.com/adjust-front-derailer/

  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
New Travel Battery
Today 04:31 AM
Bike lines @San Diego
Yesterday 10:05 AM
The great thing about trikes
Yesterday 09:58 AM
Pros and cons of hydraulic brakes
Yesterday 05:18 AM
Pros & Cons of presta valve vs schrader ...
Yesterday 01:19 AM
Peak Power - how to calculate
07-20-2025 12:39 PM
Biking with helmet laws
07-20-2025 09:56 AM
Velotric Nomad battery - does anyone els...
07-19-2025 04:57 AM
New rider — happy to be here
07-17-2025 10:47 PM
Best bike for tall and big rider
07-17-2025 09:43 AM

[-]
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. GirishH
30 posts
no avatar 2. Flowrider
19 posts
no avatar 3. meamoantonio
16 posts
no avatar 4. rydabent
16 posts
no avatar 5. enkei
15 posts