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MTB Shifters and cassette Q

  • 19-04-2011 7:05pm
    #1
    Closed Accounts Posts: 959 ✭✭✭


    Hi all,

    Just a quick question as I'm looking to get my 13yr old Spec. Hardrock back on the road for runs to the shops etc..

    The shifters are gone on it and I have a €120 voucher burning a hole in my pocket. The set-up on the bike is currently a Shifter / Gear combo, (Shimano LX I think) with a 7sp casette and the brakes pre- V brakes whatever they are called .

    My question is , obviously I cannot use a 9 speed shifter which seems to be the only type of shimano I can see, is it easy enough to change a cassette on the rear wheel or do I need special equipment?
    I'm thinking for 120 I could easily get a new set of shifters/ brake levers and a new cassette.
    Is there any other things I need to consider upgrading an old bikes drivetrain
    Thanks in advance all...


Comments

  • Registered Users, Registered Users 2 Posts: 281 ✭✭Sweenox


    You would need a cassette tool to change it but its straight forward enough,for 120 you should have enough to change the shifter and cassette and rear derailleur,no point buying top spec if its just a run about bike,as for the brake levers new cables and pads should sort them out for you.Hope this helps


  • Registered Users, Registered Users 2 Posts: 725 ✭✭✭Keep_Her_Lit


    If the bike is just going to be a run around, only replace what needs to be replaced. Shimano 7-spd STX shifters have only just been discontinued, so you may yet be able to pick up a pair. Despite being cheap and obsolete, they are actually very good.

    Failing that, you can use an 8-speed shifter with a 7-speed cassette without any problems (7 and 8-speed shifters both pull the same amount of cable per "click"). Alivio shifters are still available in 8 speed.

    If the chain/cassette need to be replaced, then it makes sense to move to 9-speed. But before splashing out on parts, check that your rear hub will accept a 9-speed cassette. If it is currently fitted with a 7-speed cassette, then there should be a spacer between the cassette and the spokes, i.e. a ring which is a few mm thick, sandwiched between the casette and the spokes. When removed, it provides the extra depth needed to accomodate a 9-speed cassette. If in doubt, pop your wheel off and bring it to your LBS for an opinion.


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