Just throwing this out, I am considering running an r1 rear brake assembly mounted on the propshaft. I have seen some race cars,atvs, and motorcycles with this setup. Has anybody considered this?

thinking of "inboard" rear discs over next winter, yup planning next winters projects allready, would greatly reduce unsprung weight, i aint got a prop so aint thought of that route.

It will work fine as long as you don't actually mount it to the prop (no hand brake if the prop goes south). You should mount it to the flange on the diff and sandwich it between the diff and prop. Put at least one dowel in there too.

I have same plan. Diff end is bad place though - the disc would occupy the same physical space as the drivers thigh. I was planning to mount it on the centre bearing (BEC application) AND cut gear teeth on the disc outer edge for electric reverse! Wilwood do a mechanical spot caliper that should do the trick.
Big advantage is use of simple lightweight caliper on the rear wheels.
RE rorty's point about handbrake not working if prop breaks - for safety purposes the handbrake is useful when the main brakes fail - it would be too coincidental for the prop to choose this instant to fail as well - in general it's a better backup system than most as it is completely independent of the main braking system; a normal handbrake shares calipers and discs with the system it's trying to back up.
The drivetrain is engineered to withstand the torque required to slide the back wheels.
Also note landrovers used a "transmission" handbrake for many years (maybe still do?)
cheers
Bob C

Thanks for the input guys, just trying to reduce some weight, after all of the pounds shed with the bike engine, it would be a pity to use the heavy system from my donor.

Are you thinking of a hydraulic handbrake ?. I think you will have to have a mechanical system fitted to your car to satisfy the tester.The Landrovers we used to use had a cable operated drum setup on their propshaft and it was a crap system needing constant attention to keep it efficient.

yours, Pete.

[Edited on 28/1/04 by Peteff]

curious, knew a bloke who's into automotive stuff for aliving. Got drunk one night and was complaining bitterly about BMW making land rover use cable hand brake on the latest Range Rover. Said something like ....
"they always used solid bars previously - much better, no stretch, hold on steep hills, pass me more curry ...."

(it was one of those nights)