Bike Forums

Bike Forums (
-   General Cycling Discussion (
-   -   SRAM front derailleur pull any different? (

adlai 10-01-20 08:41 AM

SRAM front derailleur pull any different?
My bike frame has a braze on. I'm thinking of installing an ADVENT system in the rear with a double in the front. Only mountain braze on FD I can find is SRAM X7. Probably just do a bar end for the FD.

It would be 46/30 front to 11-42 rear.

c_m_shooter 10-01-20 10:06 AM

It should be fine. Even if the pull ratio is a little different, you are only running a double and bar end shifters pull a lot of cable.

adlai 10-01-20 10:29 AM

How about the chain issues? how many links would a 46/30 front to 11-42 rear require?

dsaul 10-01-20 11:57 AM

The Advent 2x9 rear derailleur has a capacity of 47t, so you will have enough capacity for the 46/30 front the 11/42 rear. The 1x9 rear derailleur only has a capacity of 41t and is not designed for the extra capacity needed for a double front chainring. As far as the chain length, that depends on the length of the chainstays on your bike, but any standard 116 link chain should be long enough.

All times are GMT -6. The time now is 12:28 PM.

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.