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  1. #1
    mtbr member
    Reputation: pulser's Avatar
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    Question for the 29er guys about brakes

    Any of you guys running 7" rotors front and rear? Does it make a big difference with heat dissipation?

  2. #2
    mtbr member
    Reputation: proslackass's Avatar
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    I switched to 160mm front and rear (from 203/180mm) on my Stumpjumper. They seem to stay true better then larger rotors, that I have used and give me as much braking as I need.

  3. #3
    Stiff yet compliant
    Reputation: Moustache rider's Avatar
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    I use 7" front and 6" rear. Once in a while I can overheat them, but it's rare. Heat creation/dissipation is pretty much the same with 26ers and 29ers.

  4. #4
    Living the High Life
    Reputation: Ithnu's Avatar
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    I'm so concerned about weight that I run custom made 100mm rotors.

  5. #5
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    I've got 180/f and 160/r on my SJ 29er. They've worked well and I'm happy. It was a recommended switch by the shop. I'm 190# + gear. No heat issues, plenty of stopping power.
    2004 Specialized FSR Pro
    2011 Specialized Stumpjumper Comp 29er
    Civilian Luddite 29er SS

  6. #6
    BLKSS29RGD
    Reputation: trialsguy315's Avatar
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    Big front/standard rear gives good feel and good performance. The kid has big on the rear oh his hardtail and it is a bit harder to modulate than the smaller rears on the other bikes it appears.

    No brainer to go big on the front.

  7. #7
    lucky enough
    Reputation: cocavaak's Avatar
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    I still run cantilever brakes. I never felt the need for something stronger, plus early on there seemed to be too many issues with disk brakes. So for me I didn't want to "fix anything that wasn't broken" - or get something that would need fixing more often.
    "Don't take life so serious, son . . . it ain't no how permanent." - Porky Pine

  8. #8
    BLKSS29RGD
    Reputation: trialsguy315's Avatar
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    I guess I missed the part where the OP asked for opinions on cantis versus discs.

  9. #9
    I dream on two wheels
    Reputation: Simonns's Avatar
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    185 front and rear on the 29er and 203/185 on the Nomad. I've never had serious over heating issues on either bike. But, I have 160mm disks on my road bike and can over heat them fairly easily.
    Whiskey

  10. #10
    mtbr member
    Reputation: pulser's Avatar
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    Thanx guys I think I'm going to try a set of Shimano Ice Tec rotors and go with a 180 front.

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