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Change / replace derailleur on a CX bike.

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  • April 1, 2019 at 5:24 pm #29493
    Huckfinn

    Hi,
    I have a cyclocross bike with a Rotor 3DF, 36/46 Crankset and a SRAM XG1190 11×28 cassette.
    I’d like to swap the cassette for an 11-40 or 11-42.

    The guys at Wolftooth said: “..derailleur does NOT have enough capacity to handle an 11-40 cassette and a double chainring. You will have to be careful to not use small/small and large/large gearing combinations..”

    So:can I simply buy a new derailleur, long cage (ex: Sram Unisex’s Nx 1×11 Speed Long Cage Rear Derailleur-Red, Medium).

    Thanks for any feedback!!

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  • April 7, 2019 at 12:35 pm #938597
    0
    Huckfinn

    Ok, Cool!

    Ok, Cool!

    Thanks a lot for that!!

    April 7, 2019 at 7:02 am #938595
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    CXR94Di2
    Huckfinn wrote:
    sorry

    I meant “simply an 11-32 cassette”…….

     

    Using  BikeCalc.com  

    Having 36t chainring with a 42t cass gear it has a gear inch of 22.75″

    Using a 30t chainring with a 32t cass gear………………………….. 24.87″

    Smaller number is better for climbing steep hills

    All depends where you want to spend your money, a new chainset or new long cage derailleur and wide range cassette 10-42, upto you.

    April 6, 2019 at 6:59 pm #938593
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    Huckfinn

    sorry

    sorry

    I meant “simply an 11-32 cassette”…….

    April 5, 2019 at 6:45 pm #938591
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    CXR94Di2

    using a 10-42 cass with a 46
    using a 10-42 cass with a 46/30 crank will give a great range, infact slightly better than my triple setup with 11-40 cass

    April 5, 2019 at 5:04 pm #938589
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    Huckfinn

    That’s absolutely brilliant!

    That’s absolutely brilliant!

    Thanks.

    On a side note, and I guess for anyone in a similar fix, I contacted FSA about their sub-compact cranksets. The answer (so that would be option 2, I guess), is that I can replace the existing with their 48-32 or even 46-30 ones ans simply an 11-cassette. Would do you think of that option?

    April 4, 2019 at 5:28 pm #938587
    0
    CXR94Di2

    You could do both, but rear
    You could do both, but rear derailleur and
    cass is a good start

    April 4, 2019 at 4:09 pm #938585
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    Huckfinn

    Ok,

    Ok,

    That what be this, right?:

    https://www.wiggle.com/sram-force-1-rear-derailleur/

    So you suggest this with an 11-36 or 10-42 cassette , in which case I would keep my existing 46-36 as is right? (or maybe swap the 36 for a 34…) + new chain.

    That’s it?

    Did I understand it correctly…?

    April 4, 2019 at 10:11 am #938583
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    CXR94Di2
    Huckfinn wrote:
    Unfortunately it’s a short cage…!

     

    Sram Force 1 11 speed do, short, medium and long cages. 

     Wiggle has long cage in stock currently

    April 3, 2019 at 3:41 pm #938581
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    Huckfinn

    Unfortunately it’s a short

    Unfortunately it’s a short cage…!

    April 3, 2019 at 8:34 am #938579
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    CXR94Di2

    Im not too familiar with SRAM

    Im not too familiar with SRAM but there specs sheets indicate a long cage RED 22 rear derailleur is EA(exact actuation 1:1) and will accomodate upto 42t rear cass 

    11-30 11-32 11-36 10-42 cassettes available

    https://www.sram.com/sites/default/files/techdocs/gen.0000000004941_rev_b_compatibility_map_2016_road_components.pdf

    IT SEEMS LONG CAGE VERSION IS NO LONGER AVAILABLE  

    This derailleur has EA and compatible upto 42t cassettes

    https://www.sram.com/sram/road/products/sram-force-1-rear-derailleur

     

     

    April 2, 2019 at 8:39 pm #938577
    0
    Huckfinn

    Sure!:

    Sure!:

    Shifters SRAM Red 22
    Front Derailleur SRAM Red 22
    Rear Derailleur SRAM Red 22
    Brakes SRAM Red, hydraulic disc, size specific rotor diameter
    Brake Levers SRAM Red 22
    Cassette SRAM XG1190 11×28, 11-speed

    Chain SRAM Red 22
    Crankset Rotor 3DF, 36/46
    Bottom Bracket Rotor 3DF

     

    April 2, 2019 at 7:17 pm #938575
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    CXR94Di2

    Ok. It might help you if
    Ok. It might help you if you specify the exact drive and derailleurs so comments will be accurate

    April 2, 2019 at 6:45 pm #938573
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    Huckfinn

    “…If I remember correctly,

    “…If I remember correctly, the OP bought a TCR advance 1 2014 10 speed.”

    Yeah, but that was another project. Which is now going quite well thanks to all the advice I received here!…but it was a Giant TCX (not TCR) advanced 1 of 2014.

    This is a new thingo….and is an 11 speed…

    đŸ˜‰

    April 2, 2019 at 6:01 pm #938571
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    fukawitribe

    Ah – based on the cassette I

    Ah – based on the cassette I thought we were talking 11-speed. The original suggestions you mention get my vote for sure if the cash is there.

    April 2, 2019 at 5:54 pm #938569
    0
    CXR94Di2

    Jimthebikeguy.com wrote:

    Jimthebikeguy.com wrote:
    You are tying yourself in knots here. Do you need to keep your front mech? If not, then get a long cage rival 1 /apex 1 rear mech, and an 11-42 cassette. Then get a chainring of your choice, prb a 42 or 44, narrow wide. I am assuming you have an 11spd system, its hard to tell.

    If I remember correctly, the OP bought a TCR advance 1 2014 10 speed.

    He asked lots of questions about reducing gearing for easy climbing. Having got a bike with Rotor crank, it wont go below 33/34t (due to pcd) and the derailleur 11-28.

    It was suggested to get a bike or frame and get adventure gearing 46/30 and a 11-36/40 cass and matching derailleur.

    It can get quite expensive if the gearing doesnt suit the rider requirements.

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