A Chainset question please..or two..

dezbruce
dezbruce Posts: 15
edited April 2013 in The workshop
Hello,

I have a Carrera Subway 2 and a Saracen Somethingorother.

The 42t chainring would appear to be a little damaged on the Subway so was looking at upgrading it with a set comprising of a 48-38-28t .
SjEHDaA1BL9TSJGTgOTunkZd50h4DRkeojz153tEe90?size=1280x960
I think i've found a direct replacement but my questions are:
Do i need to buy a new BB or chain?
If i wanted to do this with the Saracen, would any chainset work?
Are these things of universal fitments?

cheers

Comments

  • supersonic
    supersonic Posts: 82,708
    You need to find the documents for the chainset - this will tell you what type bottom bracket is needed (and dimensions).

    You will need a new, longer chain.

    You will need to raise the front derailer.
    GT ZASKAR CARBON TEAM

    VOODOO CANZO

    Come and see me at https://www.facebook.com/biketyke/
  • dezbruce
    dezbruce Posts: 15
    Thanks Supersonic!
  • The Rookie
    The Rookie Posts: 27,812
    A 48 is only an upgrade if you need it, otherwise it's a downgrade (heavier).....
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.

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