2 x 10 chainset rear mech cage length?

sensi10
sensi10 Posts: 68
edited June 2012 in MTB buying advice
Hi was wondering if anybody could help me?

I would like to convert my Rockhopper from 3x9 to 2x10 chain set, I also want to change my mechs from shimano to the new sram type 2 rear derailleurs.
Do I need to get a long cage or medium rear mech for a 42/28 chain set?

Comments

  • warpcow
    warpcow Posts: 1,448
    Work out the maximum cog size and capacity you need, and then choose based on that.
    Commie Meta SL
    Evil Sovereign
    Santa Cruz Heckler (gone)
    On One Inbred (gone)
    Ragley Mmmbop (gone)
  • ricardo_smooth
    ricardo_smooth Posts: 1,281
    The total capacity is calculated by subtracting the size of the smallest chainring from the largest chainring and adding it to the difference between the largest and smallest cog in the cassette. For example, if the front chainrings were 22-36 and the rear cluster were 11-34t then, the front difference of 14 (36 minus 22 = 14) would be added to the rear difference of 23 (34 minus 11 = 23) to achieve a Total Capacity of 37 teeth. If the rear cluster were 11-28 the total capacity would be 31t.

    Shimano long 45t max
    medium 35tmax
  • nicklouse
    nicklouse Posts: 50,675
    No different to the info in the FAQs.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • ricardo_smooth
    ricardo_smooth Posts: 1,281
    nicklouse wrote:
    No different to the info in the FAQs.

    Wasn't meant to be

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