Fat wheels are also quite a bit bigger (rolling diameter) than normal 26" MTB wheels, so you'd need to increase the rotor size just to maintain the same mechanical advantage.
I'm aware of this but I was thinking more about the speeds that a snow bike is likely to be capable of travelling.
In the sort of terrain and weather that I could imagine using a fat bike I'd imagine that coming to a complete stop could usually be achieved by stopping pedalling and rolling to a halt. Obviously I'm not advocating brakeless but I can't see larger rotors being required either.
In the sort of terrain and weather that I could imagine using a fat bike I'd imagine that coming to a complete stop could usually be achieved by stopping pedalling and rolling to a halt. Obviously I'm not advocating brakeless but I can't see larger rotors being required either.