Fox 40 Brake Rotor question......

Discussion in 'Downhill & Freeride' started by Ian Collins, Jan 8, 2008.

  1. Ian Collins

    Ian Collins Turbo Monkey

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    so because everyone is all bummed out that there is no option to run a 185mm rotor on the fox fork i started looking for options....

    i noticed that avid lists a 140mm rear rotor option for the ultimate....

    this is a total shot in the dark, but i was wondering if the 140mm adapter was bolted to the fox fork you could use a washer or two to space things out a hair and run the 185mm rotor.....

    anyone tried this???
     
    #1 -   Jan 8, 2008

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  2. jvnixon

    jvnixon Turbo Monkey

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    A rear 140mm = 160mm front adapter
     
    #2 -   Jan 8, 2008
  3. DHS

    DHS Friendly Neighborhood Pool Boy

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    well, why 185?

    its not that much lighter.
     
    #3 -   Jan 8, 2008
  4. iridebikes

    iridebikes Monkey

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    I'm bummed about only being able to run an 8" rotor on a 40 myself. The desire of running a 7" rotor is not only for weight savings. I did it so I'd have less brake power. I felt it gave me better modulation and made me slightly faster. I still had all the power I needed, but I didn't have to use it. I have a 160/140 set up on my prophet which I now use as my XC and DH bike because I sold my sunday. Haven't had any problems with stoping power and I'm riding all the same trails at about the same speed as I was with my Sunday.
     
    #4 -   Jan 8, 2008
  5. DHS

    DHS Friendly Neighborhood Pool Boy

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    cool. makes sense. i did the same thing on my niner, 160/140. brakes are the same as my dh bike. they feel pretty damn good.
     
    #5 -   Jan 8, 2008
  6. Ian Collins

    Ian Collins Turbo Monkey

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    but on the fox a 160mm adapter is for used the 203.......so i was thinking, if you went down to a 140mm adapter, you could use 5mm worth of washers to push the caliper out enough to run a 185mm rotor.......

    oh, wait are you saying that the 140mm rear rotor utilizes a 160mm front adapter rather than some special 140mm adapter????
     
    #6 -   Jan 8, 2008
  7. Ian Collins

    Ian Collins Turbo Monkey

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    ah, just for clearance, and the fact that i think the codes are so strong even with just the organic pads that i could run a 185 rotor with metallic pads and get the same strength.....i don't care about weight that much
     
    #7 -   Jan 8, 2008
  8. FrontRangeDH

    FrontRangeDH Monkey

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    A rear 140mm adaptor is the exact size of a 160 front adaptor...at least to my knowledge
     
    #8 -   Jan 8, 2008
  9. Ian Collins

    Ian Collins Turbo Monkey

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    damn....well i guess it's just not happening
     
    #9 -   Jan 8, 2008
  10. DHS

    DHS Friendly Neighborhood Pool Boy

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    you are correct sir. its the same adapter i use for my 160/140 setup. sorry Ian
     
  11. SpasticJack

    SpasticJack Monkey

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    you'd need a 140 front adapter to run a 7" rotor on a 40. It all be comes moot with the post mount for '07-08 forks.
     
  12. jvnixon

    jvnixon Turbo Monkey

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    The Fox 40 (07-08) does not use the post mount.
     
  13. dhkid

    dhkid Turbo Monkey

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    SJ- thats when you bring out the hack saw. hahaha

    i wish i could run a 7in rotor on my 40 too, bcd was talking about making a adapter but he said it was too much trouble. i wonder what idea he had in his head tho. i put on a 7in rotor so that i could see what a 7in adapter for the 40 would look like but ended up with loads of clearance issues.