Anyone know anything about disc brakes?

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TooTallTim in reply to @Brommers

Rotor size has no effect on the maximum loading on the fork

If the caliper is further away, there's more leverage on the mounting post, no? I'm genuinely asking because physics was lost on me at school

The limiting factor is how big a brake disc you can fit before it hits the inside of the fork leg. It's a geometric limitation, not a strength limit.

On fork legs that taper, I get that. But on a straight legged suspension fork, the rotor will never touch no matter how large a rotor. Yet there's a maximum spec'd size from the manufacturer. I appreciate I'm including all forks in this debate, road and MTB

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Eseman in reply to @TooTallTim

If the caliper is further away, there's more leverage on the mounting post, no?

Or is it the same because you’re not changing the force that you’re braking to a halt? You’d still have the same rider + their same velocity, just a longer lever, so the forces farther (further is for metaphorical distance) away from the hinge would decrease, but the same force would be applied to the hinge.

Well now I’m confused and still sober :/

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