I agree. I have had a few trucks with a hydraulic handbrake on them, and
after a few years they begin to "leak down" over time.
Usually it takes about 3 hours for the truck to roll away when it's parked
on a slight slope. They often roll into parked cars & whatnot. Can't think
how many times it's happened to me.
The hydraulic handbrake has it's purpose though, but should not be the only
parking brake you rely on.
The way to go is to have your normal cable handbrake, the hydraulic
handbrake and leave it in gear when you park it!!!
From: Brad [mailto:brad@isag...]
Sent: Tuesday, 25 July 2006 8:54 AM
To: membersozdat@data... Subject: RE: hydraulic handbrake master cylinder? what from?
It was actually a good question Mark as I have seen many club rally cars, my
own included, that only had the hydraulic handbrake and no normal cable
operated handbrake fitted. No biggie as long as a locking mechanism or
ratchet is fitted, UNTIL a slight leak develops in the rear system or the
brake fluid degenerates and suddenly your pride and joy is rolling down the
hill into the bush. Didn't happen to me but I have seen an RX3 disappear
down the mountain at Jimna forest.
hi, yeah, i knew that, just wondering if any body else
(very well explained..!)
----- Original Message -----
From: "Richard Clough" <rclough@nets...>
Sent: Monday, July 24, 2006 9:55 PM
Subject: Re: hydraulic handbrake master cylinder? what from?
> 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
> 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 fluid reservoir.
> 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...>
> To: <membersozdat@data...>
> 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 ?
>> 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
>>> 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
>>> 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
>>> 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
>>>> ask what master cylinder a hydraulic handbrake uses?
>>>> I've heard that early land rover master cylinders are capable of
>>>> What have people used here?