A hydraulic handbrake is only used by drivers to lock up or at least brake
loose the rear wheels when they want to go sideways or spin on the spot.
Rally drivers regularly need to spin 180 degrees "on the spot" when they
over shoot an intersection, or need to turn very hard left or right, and
there's not enough wheel lock to do it. The hydralic handbrake is not used
to stop the car.
A hydraulic hand brake can be added into the rear brake line system without
changing the original mechanical setup.
If you dont pull up the hydraulic handbrake lever when braking normally, the
fluid pressure to the rear brakes simply flows through the hydraulic master
cylinder to the rears, that's why you cant use a master cylinder with a
When you activate the hydraulic hand brake, you cut off the incomming fluid
flow from the normal brake master cylinder to the rears and only the
hydraulic handbrake controls the pressure to the rear brakes.
----- Original Message -----
From: "mark krawczuk" <krawczuk@dodo...>
Sent: Monday, July 24, 2006 9:56 PM
Subject: Re: hydraulic handbrake master cylinder? what from?
> hi, it isnt a real good idea to have a hydraulic handbrake is it ? i
> mean the whole idea of a hand brake is in case the hydraulic system
> fails, thats wny u have a mechanical one ????
> or am i missing something. ?
> mark k
> ----- Original Message -----
> From: "Richard Clough" <rclough@nets...>
> To: <membersozdat@data...>
> Sent: Monday, July 24, 2006 9:02 PM
> Subject: Re: hydraulic handbrake master cylinder? what from?
>> No need to get too specific about master cylinders for hydraulic
>> Basically you want a brake M/C that has a brake pipe screw fitting at the
>> entry and exit to the master cyl. These are designed for remote fluid
>> reserviors. Girlock and PBR make them.
>> Fit it by cutting the line to the rear leaving a generous amount of pipe
>> to bend upward through the transmission tunnel and onto the m/cyl.
>> outlet. Usually you need to make up a new inlet pipe from the brass union
>> fitted on the firewall to the inlet of the handbrake m/cyl., as the
>> remaining pipe is too short to reach the inlet side of the m/cyl.
>> M/C Diameter isnt critical but 3/4 inch would be adequate unless your
>> using big rear dual/quad piston calipers. Smaller diameter gives you more
>> feel, but this isnt necessary as basically you want to lock up the rears
>> to start the car rotating.
>> Happy handbrake fabricating.
>> ----- Original Message -----
>> From: "Adam Jackson" <adam@sr51...>
>> To: <membersozdat@data...>
>> Sent: Wednesday, July 19, 2006 9:28 PM
>> Subject: hydraulic handbrake master cylinder? what from?
>>> Hi guys,
>>> Since there's alot of rally experience/expertise on here, i thought i'd
>>> ask what master cylinder a hydraulic handbrake uses?
>>> I've heard that early land rover master cylinders are capable of it?
>>> What have people used here?