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bigger rotors stopping better.
But probably not in use on bicycles. As Brommers was saying, the very maximum stopping you can do occurs just before the wheels lock, hence ABS as you'll know. So if you can lock the wheels with a 140mm rotor, a 203mm aint gonna stop you any quicker
Don't ask me about forks tho
I've put a 203mm on the front of my cargo bike because there's no chance of me doing an endo on that and with a 2.1" slick tyre, losing grip either
PhilDAS-
So if you can lock the wheels with a 140mm rotor, a 203mm aint gonna stop you any quicker
exactly. bigger rotors achieve more stopping power given the increased mechanical leverage, but there is often diminishing returns in going for bigger rotors if you can lock up the wheel perfectly easily in all conditions with a smaller rotor
the issue with running bigger than suggested rotors is that they may put force through the frame/fork/adapter where it can't be handled.... this will hugely depend on fork/frame/adapter though of course
anyone that thinks rotor size doesn't impact stopping force is completely clueless. there is a reason we dont all just run discs the same diamater as the hub flanges
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Brommers was saying, the very maximum stopping you can do occurs just before the wheels lock
Yeah this is the point that a lot of folk miss.
In the Mtb side of things, people seem to think that the post mount will rip off a fork if you go one rotor size above what’s recommended.I challenge anyone to show me a post mount fail on a fork or frame due to the forces in using a larger rotor. I’ve never seen it happen.
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Cargo bikes are actually one of the most interesting instances of this issue because the short fork, and large mass meaning you can put some serious stress into the whole front end. With a road bike, meh, stick whatever you can fit you’ll be grand.
swedeee
TotalShanner
chiroshi
Can't believe people is arguing about bigger rotors stopping better. Riding bikes>science