cassette range

markyone
markyone Posts: 1,119
edited June 2011 in Road buying advice
Hi i have 53/39 chainset with short mech which i am setting up on another bike.
Which is the largest cassette i can fit to the bike without problems?do the chainset make a difference or is it just the rear mech?
Colnago c60 Eps super record 11
Pinarello F8 with sram etap

Comments

  • FSR_XC
    FSR_XC Posts: 2,258
    Rear mech and chain length.
    Stumpjumper FSR 09/10 Pro Carbon, Genesis Vapour CX20 ('17)Carbon, Rose Xeon CW3000 '14, Raleigh R50

    http://www.visiontrack.com
  • maddog 2
    maddog 2 Posts: 8,114
    the latest Shimano road mechs (long or short cage) go to 28t officially and maybe a few more in reality, when you tweak the tension screw.

    older mechs are 27t officially and ditto.

    if you want more than 28t then you can use 11-32 but you'll need a mtb mech.

    [or you are on Sram then you can use an Apex mech]
    Facts are meaningless, you can use facts to prove anything that's remotely true! - Homer
  • markyone
    markyone Posts: 1,119
    maddog 2 wrote:
    the latest Shimano road mechs (long or short cage) go to 28t officially and maybe a few more in reality, when you tweak the tension screw.

    older mechs are 27t officially and ditto.

    if you want more than 28t then you can use 11-32 but you'll need a mtb mech.

    [or you are on Sram then you can use an Apex mech]
    Thanks, maybe i should add its campag daytona mech and looking for a 27 or 28 tooth
    if that will work.
    cheers
    Colnago c60 Eps super record 11
    Pinarello F8 with sram etap
  • Berk Bonebonce
    Berk Bonebonce Posts: 1,245
    Campag say a max of 26 with a short cage. However, you will get away with what you are planning on account of the fact that you are using a standard chainset and not a compact.
  • rolf_f
    rolf_f Posts: 16,015
    Campag say a max of 26 with a short cage. However, you will get away with what you are planning on account of the fact that you are using a standard chainset and not a compact.

    I run a Campag compact 10 speed and have a 13-29 cassette currently on it with a short cage mech. Campag don't actually sell non short cage mechs for the 11 speed systems but do sell 12-27 cassettes so presumably the official max is 27 rather than 26. However, as I said, 29 is fine on a short cage compact.
    Faster than a tent.......
  • Berk Bonebonce
    Berk Bonebonce Posts: 1,245
    Rolf F wrote:
    I run a Campag compact 10 speed and have a 13-29 cassette currently on it with a short cage mech. Campag don't actually sell non short cage mechs for the 11 speed systems but do sell 12-27 cassettes so presumably the official max is 27 rather than 26. However, as I said, 29 is fine on a short cage compact.

    I would suggest that with a 29 and a compact chainset you have exceeded the capacity of your rear mech, but you have maybe not noticed.

    However, and as you no doubt know, a set up will work fine if the capacity of the rear mech is exceed a small amount, as long as you avoid certain ratios.
  • rolf_f
    rolf_f Posts: 16,015
    I would suggest that with a 29 and a compact chainset you have exceeded the capacity of your rear mech, but you have maybe not noticed.

    However, and as you no doubt know, a set up will work fine if the capacity of the rear mech is exceed a small amount, as long as you avoid certain ratios.

    If you mean that I have exceeded the chainset capacity in that the system works perfectly well, even with the gears crossed from big chainring to big cassette ring then, yes, I have exceeded its capacity. As it happens, it even managed fine without me lengthening the chain initially from the initial 11-25 length though that was a little tight. There is still plenty of clearance and movement remaining - it even looks like it could conceivably take a larger cassette ring if Campag made one.
    Faster than a tent.......