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

New: Take part in the October Giveaway for a Whiskey Tango Foxtrot urban gravel bike from Van Dessel Cycles


Changing front gear rings
#1
At the moment I have a compact gear set with a 50-34 chain ring on the front, if I want to change this for a 52 -39 on the front will I have to change the company derellier on the back, and if so why

  Reply
#2
If it was the other way round, you'd run into problems. The limiting parameter is the so-called "capacity" of the derailleur, that is, how many teeth difference it can accommodate (the additional length of the chain, difference between "small - small" and "large - large" gear combination). This is why derailleurs come in different sizes (cage length) for road bikes, depending on the gear combinations one wishes to install. Since the needed "capacity" is smaller after your modification, you do not have to install a new derailleur. However: shifting performance could benefit from a shorter cage.
All the best,<br />
Joe
EDIT:<br />
Also, shifting performance will most probably benefit from a new front derailleur.

  Reply
#3
Thanks for that I will try it this weekend
Mike

  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
Can these bars go up higher?
Today 10:31 AM
Colnago CLX, unknown year
Today 08:36 AM
What do you like about gravel bikes?
Today 07:25 AM
SUPER LUBRICANTS
Yesterday 09:58 PM
Hello from Maine!
Yesterday 08:51 PM
COLNAGO ASSO
Yesterday 04:28 AM
Disc Rotor / Lockring Play
10-22-2020 09:29 PM
90's Raleigh R600
10-22-2020 07:32 PM
Shimano tourney
10-22-2020 12:53 PM
Biking in the rain
10-22-2020 04:30 AM

[-]
Top 5 Posters This Month
no avatar 1. Jesper
32 posts
no avatar 2. Painkiller
9 posts
no avatar 3. Sagan97
7 posts
no avatar 4. Papa Dom
6 posts
no avatar 5. Nikko
6 posts