france1

Hi building a WRC replica from a Hawk 2006 so need to fit a hydraulic handbrake, can i run the brake lines from 2 into 1 onto the handbrake reservoir and then out as 1 and back to the 2 rears or will i loose my abs?

Thanks

John 37

There's 2 ways of getting a hydraulic handbrake.
If you add additional rear calipers, it's a separate system with master cylinder, pipes and calipers. With this system the master cyl has it's own reservoir.
If you use the existing system, you put a master cylinder in the pipe feeding the rear brakes. This gets complicated with 4 channel ABS as there are 2 rear pipes. This master cylinder does not have a reservoir.
I don't kniw which system the WRC cars used.

france1

Many thanks, its the 4 channel issue i have as i don't really want to lose the abs which i have been told if i go 2 pipes into 1 then the handbrake and then 1 pipe into the 2 rear calipers i will lose abs?

Godspeed Brakes

iTrader: (259)

You can get an expensive Gp N handbrake that you can run 2 lines through , I'm guessing as it's 2 lines they could be separated internally on the cylinder , if so that should work

Godspeed Brakes

iTrader: (259)

This

https://www.rallynuts.com/motorsport...-cylinder.html

Looks like it would work

John 37

Wow £450 is certainly expensive. It looks like 2 master cylinders back to back in a common body.
Nice solution but as the Subaru handbrake is so good, rather unnecessary on our cars.

Godspeed Brakes

iTrader: (259)

On a rally car , the standard handbrake would not last half a rally , I've tried lol , the subaru handbrake is not designed to be pulled around loads of hairpins , a hydraulic handbrake acting on the brake calipers is far better

John 37

I bow to your experience.
My car's road only. Not many chances to play handbrake turns commuting in Oxfordshire.
I didn't find handbrake life a problem on my (non-Subaru) rally car. It had a hydraulic one but, as it was either quickly on or off just to lock the wheels, it had a relatively easy life. It wasn't used to tweak the car in bends. That was done with driver adjustable brake bias.
Ah happy days
If the OP's going to compete, full hyd is the answer. If he's just going for a functional look, mech may do. His choice