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Rear Cassette / Chain length question.

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  • 24-02-2011 3:02pm
    #1
    gaffmaster
    Registered Users Posts: 717 ✭✭✭


    Hi all,

    My new wheels arrived already!

    Instead of swapping over my rear cassette, I'm thinking of keeping my old rear wheel as a quick swap out for Turbo Training.

    My current rear Cassette is a Shimano HG50 8-speed 12-25 (according to the specs here)

    I'm wondering, if I get this HG50 8-speed 11-30 option - will it be compatible with my existing chain? Or would I need a different chain length to accommodate the larger rings?

    Thanks for any tips.


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    #2
    07Lapierre
    Registered Users Posts: 8,219 ✭✭✭07Lapierre


    You'll need a new chain. 11-25 to 11-30? see what buying new wheels does? :D


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    #3
    blorg
    Registered Users Posts: 15,989 ✭✭✭✭blorg


    11-30 is a mountain bike cassette and well out of spec for a road rear derailleur. Having said that it may work- do you feel you need the easier gearing? If you don't specifically need it get something more like what you have already.

    You would need a new chain, yes.


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    #4
    gaffmaster
    Registered Users Posts: 717 ✭✭✭gaffmaster


    Thanks for the replies.

    The 12-25 suits me fine at the moment, I just thought it might be nice to have more variety across the gears.

    Hadn't realised it was a mtb cassette. Will keep looking for a 12-25 so.
    Might have to get it online

    This new wheel business might end up being a slippery slope - already having trouble getting any of my tyres onto the new wheels...


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    #5
    cdaly_
    Registered Users Posts: 6,440 ✭✭✭cdaly_


    gaffmaster wrote: »
    The 12-25 suits me fine at the moment, I just thought it might be nice to have more variety across the gears...

    I ran a 11-30 on a road bike without problem. Now running a 13-25.

    [edit] Actually, now that I think of it, that bike started life as a hybrid so it may have a longer derailleur cage than the standard road bike...


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