So on average, the slower bike's brakes work harder.
Really? After a road bike has already slowed to the MTB speed, it still has as much kinetic energy as the MTB, along with it's lower rolling resistance and less drag. Once the speeds are equalised, the road bike's brakes still have more to do than the MTB's
In other words, if you rode an MTB down a typical Alpine road descent, its brakes would have an easier time than a road bike's on the same descent.
Really? After a road bike has already slowed to the MTB speed, it still has as much kinetic energy as the MTB, along with it's lower rolling resistance and less drag. Once the speeds are equalised, the road bike's brakes still have more to do than the MTB's
In other words, if you rode an MTB down a typical Alpine road descent, its brakes would have an easier time than a road bike's on the same descent.