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Formula Oro K24 about to buy - what rotor size?

Discussion in 'Downhill & Freeride' started by zopac, Feb 4, 2008.

  1. zopac

    zopac Chimp

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    Hi guys,

    My Juicy 7's have been sold on the bay and the K24's in my basket :)

    Decided on 200 rotor for the front and debating whether to go 180 or 200 on the back - there is £2 difference for the bigger rotor.

    I do aggro XC mainly with some steep downhill.

    a 180mm on the rear will be harder to lock up right? but won't cool as fast? I want a lot of modulation and control and hate grabby brakes.

    Or is 200mm too big up front too? :monkeydance:

    Thanks guys :)
     
    #1 -   Feb 4, 2008

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  2. bullcrew

    bullcrew Turbo Monkey

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    200 front 180 rear and works rgeat!
     
    #2 -   Feb 4, 2008
  3. mattmatt86

    mattmatt86 Turbo Monkey

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    That's the setup I'm running with my K24s, works amazing. My bike is a hair over 38lbs right now, I think if It was a little heavier I would prolly bump up to a 200 rear. Regardless, the K24s are awesome brakes!! I'm getting a second set for my Slalom bike.
     
    #3 -   Feb 4, 2008
  4. buckoW

    buckoW Turbo Monkey

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    Get The One if you want to run smaller rotors.
     
    #4 -   Feb 5, 2008
  5. zopac

    zopac Chimp

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    Thanks guys,

    i'm 13.5 stone / 189 pounds

    180 on the back sounds good then. Would there be *any* advantage to 180mm up front ? apart from saving 30grams in weight.
     
    #5 -   Feb 5, 2008
  6. bullcrew

    bullcrew Turbo Monkey

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    I'd stay with a 200 front, the 30 g isn't worth saving in this case.
     
    #6 -   Feb 5, 2008
  7. sanjuro

    sanjuro Tube Smuggler

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    What width tires are you running? If you are running 2.3 in the front and rear, 180/160 should be fine. If you are running 2.5, 200/180's are good.

    I am running 180/160 on my Kona Dawg with a 2.5/2.3 tire combination. This set up is gear specifically for Downieville, with long rough straightaways.
     
    #7 -   Feb 5, 2008
  8. Sir_Crackien

    Sir_Crackien Turbo Monkey

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    personally i say go with 200/3 front and back. the weight is a non issue and they have more power if you need it. one things that i have always given formula credit to is that their brake can modulate like no other so don't worry about them being too grabby.

    that being said i use 160mm on the xc bike front and back. currently i have the same on the all mountain bike but that is soon to change to 200mm front and back for those long ass downhill i encounter time to time.
     
    #8 -   Feb 5, 2008
  9. zopac

    zopac Chimp

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    Thanks for advice guys :)

    Running conti Vertical Pros which are 2.3 (but more like 2.1 in reality) bike is a Santa Cruz Heckler weighing in at 30.5 lbs.











    Ive ran 160 Hayes on the back and heated them up real quick hence went to the extreme and swapped for 203mm Avids. On the rear I find I can lock up the wheel a bit too easily sometimes, on the front well I don't use the front brake as much as I should on downhills. :poster_oops:

    I'm thinking if 180mm makes it harder to lock the wheel up front and gives slightly better control/modulation that could be the way to go, especially with my 2.3 tyres? :redface:
     
    #9 -   Feb 5, 2008