Inboard brakes- worth it?

[PlatinumZealot]

The far end of a driveshaft could be made lighter than a rotor, caliper, and upright flanges/bosses. But the driveshaft will absorb energy under braking. Would this make the brakes feel less responsive? The immediacy of a directly connected rotor is lost.

Would lock-up be reduced or exaggerated? The driveshaft would reduce the initial bite/torque from the brake. But the shock absorbing effect may create a confusing feedback as the driveshaft builds and releases energy.

Two words.. CV joints.

Four of them! That's a lotta weight.

[roon]

The far end of a driveshaft could be made lighter than a rotor, caliper, and upright flanges/bosses. But the driveshaft will absorb energy under braking. Would this make the brakes feel less responsive? The immediacy of a directly connected rotor is lost.

Would lock-up be reduced or exaggerated? The driveshaft would reduce the initial bite/torque from the brake. But the shock absorbing effect may create a confusing feedback as the driveshaft builds and releases energy.

Two words.. CV joints.

Four of them! That's a lotta weight.

Indeed, but you also get to deduct:

-brake rotor and carrier
-caliper and pads
-hydraulic lines and fluid
-mounting bolts
-upright flanges
-ducting

Plus wheel structure might be further optimized without concessions to brake rotor accommodations.

[PlatinumZealot]

Those might still be lighter becuse the CV joints have to be steel/titanium. The brake stuff are carbon and aluminum.