Diff Brake

[Ryss]

Of course one major disadvantage is that it will be more or less useless as an emergancy braking system, i.e. if you suffer a brake failure as the size and pad material will be inadequate. Might just be adequate as a handbrake!

One must bear in mind that because the disc is on the propshaft, that there 4.11 : 1 mechanical advantage. So a disc half the size of standard disc set up will be adequate.

Another possibility is to use inboard discs like the old Audi Super 90. I.E. Discs mounted on the output shafts of the diff. Advantage - lower unsprung weight. Disadvantage - additional wear on CV's

[gc77]

I like the idea. Keep us posted Brian.

[A80Avant]

this would be a good choice for rs2 users where the rear handbrake even at best are not able to hold the car on a decent slope, only on level ground.

However i have already contemplated the idea of fitting 2 extra calipers on the rear, just for handbrake in my case, to take the same handbrake cables and direct them to the new calipers, similar to what they do in lambo's and Ferraris. Of course that would mean that a caliper seat and mounts need to be custom made.

Nevertheless i have never seen something like this before..

[Tonks4x4]

Not sure if it would be possible on the avant as the diff nose is so much longer but once I have something made for the coupe I will have a look