Crank Length Too Long

ChantelleC
ChantelleC Posts: 48
edited October 2012 in Workshop
Hi,

I bought a new bike last weekend which has 175mm cranks, my old bike has 170mm cranks. I am 5"6 so ideally need to change the 175's for 170's, I can also feel the difference between the two and prefer 170's.

If I can't swap the cranks over will I have to swap the whole chainset or even buy a new chainset?

If I am able to swap just the cranks I may have a problem. In the 175mm crank attachment you can see the that it fixes onto the bike with 2 bolts, where as looking at the 170mm crank photo you can see that the crank fixes on with 1 center bolt.

Any advice would be great!

C
Scott Foil 30
Trek 1.2
Trek Fuel EX5

Comments

  • triquin
    triquin Posts: 30
    You will need to swap the the bottom bracket as well :) providing it will fit.
  • desweller
    desweller Posts: 5,175
    The bottom bracket will almost certainly fit unless your old bike uses an Italian thread (pretty unlikely these days).

    It's not a hugely difficult job...but you will need the bottom bracket tools for both types of BB. The tools will probably still be cheaper than a new chainset.
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