fat and old wrote:
Shouldn't the weight of the disk be included when comparing? You don't exactly remove the brake track from a wheel when checking the rim brake version, disks are essentially the brake track aren't they? Overall weight of the wheel/braking surface is apples with apples?
Depends if you include that in the weight of the overall groupset or not. To my mind it doesn't make much of a difference as the disc is very centralised around the axis of rotation (the axle)
If you go back to my original point that triggered Comedian's rant about wheel weight, it was about refuting the performance impact about the additional rotational inertia of a disc. I didn't say a disc wheelset would be lighter but that a disk rim would be. If you took a disc and a rim brake wheelset of identical weight, the disc wheelset would accelerate faster, and feel like a lighter wheelset, because of its lower rotational intertia. Because a disc wheelset requires additional mass at the hub and spokes but less at the rims it becomes hard to compare the two.
I would be willing to bet that even though a Roval CLX wheelset weighs an extra 50g for the disc version, that it would accelerate faster; It's starting to get too hard now. Wouldn't it be easier if we all just settled on the fact the discs are far superior and anyone who still rides rim brakes is a fun-hating luddite?