Do I need to change chain

ermintrude
ermintrude Posts: 514
edited March 2008 in Workshop
Currently have a 50-34 compact with 12-25 cassette. If I change the cassette to a 12-27 will I need to increase the length of the chain ? Sorry if this is a dumb question but I am a mere female !

Comments

  • portuguese mike
    portuguese mike Posts: 695
    you should be fine with that - particularly as you will (should) only ever use the 27 with the 34 at the front
    pm
  • geoff_ss
    geoff_ss Posts: 1,201
    Mere female? You need lessons from my wife!

    ... and yes, it'll probably be OK. Just try it because it depends how near the limit you were with the 25 sprocket. Be sure the whole set up doesn't lock up if you engage the big chain ring and the big sprocket. It's not a combination you should use but you could do it inadvertently and it's best if it copes OK.

    Geoff
    Old cyclists never die; they just fit smaller chainrings ... and pedal faster
  • Gussio
    Gussio Posts: 2,452
    Probably best to add a new chain at the same time as a new cassette, to avoid chain "skipping". Getting the correct length is covered here: http://www.parktool.com/repair/readhowto.asp?id=26

Categories