Hydraulic handbrake are the road legal?

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Hydraulic handbrake are the road legal?

Postby iety2004 » 01 Apr 2005, 23:03

HI

been thinking about the possibilities of plumping in a hydraulic handcbrake when i route the brake pipes and fuel pipes inside the car.

How hard would this be and is it road leagal?

I would be keeping my original hamdbrake and fitting a conversion kit

cheers
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Postby hsr2.6 » 01 Apr 2005, 23:09

as long as you have a cable operated handbrake as well,yes it's legal,just put it in line on the rear brake pipe....
rally drivers do it sideways.............well the quick ones do....................
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Postby Doive » 01 Apr 2005, 23:10

It's a matter of getting a kit with all the suitable bits to retain your original lever. As far as I can tell there is no restrictions on how your handbrake operates as long as it acts sufficiently to hold the car in place and is lockable i.e. must have a release button, but this shouldn't be a problem with the original lever and ratchet. Typically a hydraulic handbrake is used in rallying applications as a fly off brake, what are you doing with your car? Is it going to be a rally car or just a fast road car? If it's just a road car then I would save your money as the standard handbrake cable is perfectly fine when adjusted properly.
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Postby hsr2.6 » 01 Apr 2005, 23:13

it's got to be cable operated as well otherwise it'll fail the mot
rally drivers do it sideways.............well the quick ones do....................
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Postby Doive » 01 Apr 2005, 23:21

Ah right. Was having a look through the regs and couldn't see any mention of it. Thought a rally guy like you would know his stuff! So what happens with all the new Mercs and the like that have the elecronic handbrake that consists of a controller and a device on the back axle that applies the handbrake? No mechanical link or cable at work there?
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Postby hsr2.6 » 01 Apr 2005, 23:23

it must be able to keep constant pressure,but with these new cars who knows...............
rally drivers do it sideways.............well the quick ones do....................
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Postby Shoveitpusher » 02 Apr 2005, 08:08

rules for both motorsport and con and use say the parking brake must be seperate to the main brake circuit. this could be hydraulic (used to be the case but could have changed) or mechanical. thus the push button types are ok, they are an electro mechanical device on a seperate circuit.

it's certainly worth plumbing the inside brake line with a joint ready to fit the hydraulic system. they are not legal for endurance rallies but as long as they retain the seperate circuit (cables or spot calipers) not a problem. a better solution would be to convert the existing handbrake to fly-off by reversing the action of the button and installing a traditional setup. not as wrc but neater and more space efficient.

bit of history: in ye olde days only the grp 4 cars had disks on the back. they tended to have big disks on the back for the footbrake with seperate calipers for the park brake sometimes.

then fiestas and escorts went fwd people found an easy rear disk conversion and they work very well. certainly on an escort it was possible to get a legal handbrake by attaching the calipers to the cross axle rod. many people just put the disks on with a spliced in hydraulic cylinder. scrutineers started having a blitz on it. more or less gone now due to the greater number of proper rear calipers. xr3 setups were favourite as they were vented, personally i used mk1 fiesta. with princess calipers on the front and a non servo master cylinder you got awsome stopping power all from a scrap jard.
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Postby iety2004 » 04 Apr 2005, 09:47

Awesome, so basically run the brake pipe inside the car and leave a T piece in the pipe so i can plump in a hydraulic conversion at a later date, and i must keep the original handbrake as well,

Cheers :P
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Postby Shoveitpusher » 04 Apr 2005, 14:20

not a 'T' piece and straight connection. he easiest way is to put a male flair on the front piece and a female on the rear.
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Postby hsr2.6 » 04 Apr 2005, 22:54

but it's got to go through the master cylinder,so it's just in and out :wink:
rally drivers do it sideways.............well the quick ones do....................
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