Viewing 18 posts - 1 through 18 (of 18 total)
  • converting a road bike from a double to a triple
  • treefeller
    Free Member

    Do l need to change the left shifter and front mech as well as the crankset?

    trail_rat
    Free Member

    Depends on the group set and age

    nemesis
    Free Member

    What he said.

    With wide range cassettes and compacts though, why would you go for a triple nowadays now that 10+ speed cassettes mean you don’t have the problem of old with wide jumps between gears?

    treefeller
    Free Member

    Shimano groupset, probably 9 speed tiagra.

    trail_rat
    Free Member

    Nemesis – I give you touring

    nemesis
    Free Member

    Yeah, I figured but I still reckon my point holds. Back in the day, you needed a triple to get the range because cassettes typically were fairly narrow range but that’s changed now.

    Anyway, I’ll not hijack the thread.

    mikewsmith
    Free Member

    I’d do the calcs on a new compact setup vs 3x on what you have and see what bargains are around on clearance stock. Might get you what you want with a nice new drive train at a decent price.

    wicki
    Free Member
    wicki
    Free Member
    trail_rat
    Free Member

    Fwiw for a number of years tiagra was a single shifter system with double or triple covered by same shifter.

    On the road having no big uneven jumps between gears is almost as important than the top and bottom range

    Xt triple touring here after trying a tour with one of the new fangled fancy bolt on extensions and a super compact triple it was shit

    ampthill
    Full Member

    Basically the answer is yes

    If you don’t need the top end you could keep your shifter and possibly front mech’ and just run the inner 2 rings of the triple. The shifters are quite pricey

    Shimano road triple are sold with a 30 inner ring. But you can fit a smaller inner ring. But the middle ring nust be 39 or bigger

    Spa cycles sell touring triple chainsets

    trail_rat
    Free Member

    Depending on the year tiagra shifters were all triple compatible. – there was no double specific option

    keithb
    Full Member

    Or look at a super compact or alpine double. 26/40 or 28/42 ratios seem to be available from spa cycles. Drop your ratios for touring, without changing too much of the rest of the bike?

    mattsccm
    Free Member

    Nip over to what was the CTC forum for all the possible options you will ever need and some you won’t.

    treefeller
    Free Member

    Thanks for your help trail rat, and the links were very informative.
    I think I’ll try a triple ( got a few bikes I could borrow from ) and see how the original shifter copes.

    mountainman
    Full Member

    Had similar woes with my Tricross few years back,and price wise was cheaper to change rear cluster to wider n lower set and rear changer to longer reach,than change crankset/axle etc.

    Still have old block n bits for spares etc

    ransos
    Free Member

    I think I’ll try a triple ( got a few bikes I could borrow from ) and see how the original shifter copes.

    If you google the model number of your shifter, you should be able to find out if it’s triple-compatible or not.

    natrix
    Free Member

    You might need to change the bottom bracket axle thingy………..

Viewing 18 posts - 1 through 18 (of 18 total)

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