bigger rotors=more power?

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bigger rotors=more power?

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Posted: May 21, 2012 at 10:16 Quote
I have Avid Rs on my 2011 Trek Remedy 8. The stock rotors are 185front and rear. I'm a pretty big, heavy guy(215lbs, 6-4) and I'm noticing some brake fade in addition to some terrible screaming noises from the brakes when they get very hot during a long, steep descent. This noise is noticeably different from the "avid turkey warble" during wet conditions.

Would upgrading the front rotor to 203 address this problem? There are adapter kits to do this right? I can't justify buying a new brakeset for my year old bike, so replacing everything isn't an option right now.

Thanks,
Tristan

Posted: May 21, 2012 at 10:51 Quote
203 mm rotors front and back on my dh rig help. I am heavier then you and have zero problems. New 203 rotors and the proper adapters is all you need

Posted: May 22, 2012 at 11:55 Quote
Yes (they = more power.)
Plus - if you upgrade the rotors and still need more power, or still have fading on long descents, a pad upgrade can help too, depending on what you have now. Some Avid brakes come with organic pads, and upgrading to metallic pads can increase power and reduce fading.

Posted: May 23, 2012 at 9:38 Quote
I ordered 203mm rotor for front and a new 185 for the rear. Avid HS-1s are supposed to resist heating up so much too.

Thanks for the advice!
Tristan

Posted: May 23, 2012 at 13:14 Quote
Why 180 for the rear?

Posted: May 23, 2012 at 14:50 Quote
brianl wrote:
Yes (they = more power.)
Plus - if you upgrade the rotors and still need more power, or still have fading on long descents, a pad upgrade can help too, depending on what you have now. Some Avid brakes come with organic pads, and upgrading to metallic pads can increase power and reduce fading.

Actually, organic pads grip better to pads and metallic pads last longer.

Posted: May 23, 2012 at 18:08 Quote
evolution wrote:
Why 180 for the rear?
I guess I didn't want to go full on DH in what is supposed to be an AM bike. I'm trying to use my front brake more anyway and this will hopefully keep me on that more. "Front to slow down, rear to steer" right? I'll update after the a ride on the new rotors.

Posted: May 24, 2012 at 11:30 Quote
mtnbker395 wrote:
brianl wrote:
Yes (they = more power.)
Plus - if you upgrade the rotors and still need more power, or still have fading on long descents, a pad upgrade can help too, depending on what you have now. Some Avid brakes come with organic pads, and upgrading to metallic pads can increase power and reduce fading.


Actually, organic pads grip better to pads and metallic pads last longer.
Ok, I meant a pad change can sometimes improve power, but organics may not always give the most power.
I got some Avid Juicy Ultimates and wasn't happy with the power (I think they come with organic pads) so I installed some aftermarket "ceramic" pads (whatever friction material they use, not sure) and they increased the power.

Posted: May 25, 2012 at 17:15 Quote
brianl wrote:
mtnbker395 wrote:
brianl wrote:
Yes (they = more power.)
Plus - if you upgrade the rotors and still need more power, or still have fading on long descents, a pad upgrade can help too, depending on what you have now. Some Avid brakes come with organic pads, and upgrading to metallic pads can increase power and reduce fading.


Actually, organic pads grip better to pads and metallic pads last longer.

Ok, I meant a pad change can sometimes improve power, but organics may not always give the most power.
I got some Avid Juicy Ultimates and wasn't happy with the power (I think they come with organic pads) so I installed some aftermarket "ceramic" pads (whatever friction material they use, not sure) and they increased the power.
No problem that sounded a little condescending was just adding Smile

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