Eldron Posted September 4, 2014 Share A 29er wheel travels further in distance with each rotation of the wheel than a 26er. Therefore a bigger rotor is needed to achieve the same braking force at the same speed.Simple really. I hope you have sarcasm font on cos your science font is broken. Capricorn, GLuvsMtb, Vangar and 3 others 6 Link to comment Share on other sites More sharing options...
rouxtjie Posted September 4, 2014 Share I hope you have sarcasm font on cos your science font is broken.kekekekeke Link to comment Share on other sites More sharing options...
rouxtjie Posted September 4, 2014 Share A 29er wheel travels further in distance with each rotation of the wheel than a 26er. Therefore a bigger rotor is needed to achieve the same braking force at the same speed.Simple really.Does 1kg feathers weigh less than 1kg lead? Edited September 4, 2014 by rouxtjie Captain Fastbastard Mayhem 1 Link to comment Share on other sites More sharing options...
Wannabe Posted September 4, 2014 Share Does 1kg feathers weigh less than 1kg lead? No, but they fall slower. Link to comment Share on other sites More sharing options...
NINER_boy Posted September 4, 2014 Share http://www.bikeradar.com/mtb/gear/article/trail-tech-disc-brake-rotor-size-37050/ Link to comment Share on other sites More sharing options...
Eldron Posted September 4, 2014 Share Does 1kg feathers weigh less than 1kg lead? Actually he might be onto something - with one small correction... At the same speed the 29er wheel will be turning slower so 29ers need SMALLER brake rotors! rouxtjie, Headshot and Wannabe 3 Link to comment Share on other sites More sharing options...
rouxtjie Posted September 4, 2014 Share No, but they fall slower. you gots me. Wannabe 1 Link to comment Share on other sites More sharing options...
DJ84 Posted September 4, 2014 Share Your physics is flawed.It is force that needs to be slowed down. All things equal, all things will be equal no matter the wheel size.velocity does not get changed by wheel size. So please show me how this applies in a practical manner. Link to comment Share on other sites More sharing options...
Eldron Posted September 4, 2014 Share http://www.bikeradar...tor-size-37050/ Wheel size and rotor diameter are related. In general, a 180mm front and 160mm rear rotor will provide you with ample braking power for a 29er hardtail. But there are several other factors to consider as well. The chaps at bikeradar need to go back to university! Link to comment Share on other sites More sharing options...
jcza Posted September 4, 2014 Share Friday topic - come back tomorrow please ChUkKy and jules1976 2 Link to comment Share on other sites More sharing options...
rouxtjie Posted September 4, 2014 Share Wheel size and rotor diameter are related. In general, a 180mm front and 160mm rear rotor will provide you with ample braking power for a 29er hardtail. But there are several other factors to consider as well. The chaps at bikeradar need to go back to university!what about these...jis they must brake like a baws http://www.chainreactioncycles.com/us/en/dirty-dog-skull-rotor/rp-prod25147 Link to comment Share on other sites More sharing options...
MarcBurger Posted September 4, 2014 Share /resisting the urge to go all sciencey... 180 rotors, check pads/change pad type (lightly sand down with fine paper if they are full of junk), bleed as last resort.SLX brakes should be able to stop you with plenty strength left. Link to comment Share on other sites More sharing options...
Eldron Posted September 4, 2014 Share what about these...jis they must brake like a baws http://www.chainreac...or/rp-prod25147 Damn! Those are pretty sweet! I wonder if uber cool beats ICE TEC? rouxtjie 1 Link to comment Share on other sites More sharing options...
GhostSixFour Posted September 4, 2014 Share Damn! Those are pretty sweet! I wonder if uber cool beats ICE TEC? Uber cool means it stays cooler than ICE TEC, so of course it beats it in performance. Simple science really. Link to comment Share on other sites More sharing options...
RockCoach Posted September 4, 2014 Share The answer is momentum. Takes more energy to accelerate thus more energy to stop. However, that is not going to affect the OPs problem with brakes not biting. rouxtjie 1 Link to comment Share on other sites More sharing options...
rouxtjie Posted September 4, 2014 Share Uber cool means it stays cooler than ICE TEC, so of course it beats it in performance. Simple science really.And what is cooler than skulls on your rotors....dragons pappie http://www.amazon.com/DirtyDog-Dragon-rotor-6-bolt-160mm/dp/B001CK2O3S Edited September 4, 2014 by rouxtjie Link to comment Share on other sites More sharing options...
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