Compatible cassettes for 105 groupset

jibberish
jibberish Posts: 151
edited May 2012 in Road buying advice
Hi all

I'm off on a 700 mile trip with some big hills and a tent on the panniers and want to change the cassette on my bike to make the hills a little easier.

I've got a Scott CR1 with the standard 105 (double) currently 11-25.

Does anyone know if I can do a straight swap here for an 11-28.

I'll push my luck and also ask if anyone can give me any clue on which of these might be compatible/best:

Shimano Ultegra 6700 http://www.chainreactioncycles.com/Mode ... elID=39014
SRAM PG1070 http://www.chainreactioncycles.com/Models.aspx?ModelID=40237
Shimano 105 5700 http://www.chainreactioncycles.com/Models.aspx?ModelID=50454

Any help much appreciated. Thanks :P :P :P

Comments

  • sungod
    sungod Posts: 17,096
    the sram 1070 range works fine with 105, but the 105 cassette is cheaper so might as well stick with it

    you'll need a new chain to go with the cassette, the old one will be too short

    you'll also need to adjust the rear mech to ensure adequate clearance with the 28
    my bike - faster than god's and twice as shiny
  • maddog 2
    maddog 2 Posts: 8,114
    if your rear mech is 5700 then 11-28 will bolt straight in, no probs

    if your rear mech is 5600 then you may need to tweak the tension screw so it clears the 28t sprocket, and make sure you chain isn't long.

    Either SRAM or Shimano cassettes are fine. I find the Shimanos shift better but there's not a lot in it.
    Facts are meaningless, you can use facts to prove anything that's remotely true! - Homer
  • jibberish
    jibberish Posts: 151
    Nice one, Sungod

    Appreciate that - thanks. I'll get my order in :-)
  • jibberish
    jibberish Posts: 151
    maddog 2 wrote:
    if your rear mech is 5700 then 11-28 will bolt straight in, no probs

    if your rear mech is 5600 then you may need to tweak the tension screw so it clears the 28t sprocket, and make sure you chain isn't long.

    Either SRAM or Shimano cassettes are fine. I find the Shimanos shift better but there's not a lot in it.


    Thanks maddog 2. It's a 5700 as standard from the bike as I bought it :P
  • hodge68
    hodge68 Posts: 162
    even cheaper, the tiagra 12-28 works with the 105.
    Ridley Boreas
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  • jibberish
    jibberish Posts: 151
    Thanks hodge68, I already ordered the Sram one.
  • jibberish
    jibberish Posts: 151
    Got the Sram one fitted (I was too lazy to do it). All working out just fine - thanks for the help :-)

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