New chain or new cassette ?

mosa
mosa Posts: 754
edited July 2012 in Workshop
Hello all. I'm looking at a bike that has had the rear cassette changed to assist with hill climbing with a larger 1st ring at least. Looks unusual. Anyway when I try to go onto this ring at the rear using my large front ring the rear derallier flattens out making the chain too short. Is it just a case of buying a new chain or re fit the standard cassette ? Not sure what to do. Thanks
My bikes

2018 Trek Emonda SL6 Pro

Comments

  • styxd
    styxd Posts: 3,234
    A Fairly obvious solution is dont use that gear combination.
  • mosa
    mosa Posts: 754
    I thought that but not sure with my very limited experience what the other sprockets will be like over standard
    My bikes

    2018 Trek Emonda SL6 Pro
  • styxd
    styxd Posts: 3,234
    Its a gear you really shouldnt/dont need to be using.
  • tincaman
    tincaman Posts: 508
    Large ring at front to large ring at rear should be avoided, maybe even the three largest. The chainline is extreme, wears everything out quicker and your rear mech is going to struggle as well, as you have already noticed.
  • mosa
    mosa Posts: 754
    i understand this now chears for the help chaps
    My bikes

    2018 Trek Emonda SL6 Pro

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