[Healeys] Dual Circuit Braking system

[Austin Healey]

Please dont tke me wrong. I dont want to seem negative. Just take my ideas
as "thoughts".

Playing with the brakes is not realy something that can be taken easy.
Designing a full system needs to deal with many aspects (sizing of the
cylinders, balance, fluid type, brake pipe lenght, pressure control etc). If
I am asked, I would leave this task for thoose who have experience and
education like Denis Welch. OR the factory itself. In my opinion any car
which is used as intended would be safe enough with production brakes. Only
thing is that they need to be in A1 condition.

Again sorry if I am negative.

Gergo

2011/6/30 Peter & Veronica <greylinn at ozemail.com.au>

> I should have added that I also use a booster on the front only
>
> Peter
>
> -----Original Message----- From: Dave Porter
> Sent: Thursday, June 30, 2011 12:26 PM
> To: 'Peter & Veronica' ; 'Robert Bender' ; healeys at autox.team.net
> Subject: RE: [Healeys] Dual Circuit Braking system
>
>
> I've used similar unit with a booster on Healey's and Jag's.......
> Easy to find units and replacement parts. Sorry no pixs available though.
> dave
>
> frogeye at porterscustom.com
>
> Porter Customs   2909 Arno NE
> Albuquerque, NM USA 87107
> 505-352-1378
> 1954 BN2  1959 AN5
> Porter Custom Bicycles
>
> cars:
> www.britishcarforum.com/**portercustoms.html<http://www.britishcarforum.com/portercustoms.html>
> gallery:
> http://picasaweb.google.com/**porterscustombicycles/**
> PorterCustomBicyclesStuff<http://picasaweb.google.com/porterscustombicycles/PorterCustomBicyclesStuff>
>
> GO HERE: http://porterbikes.com/  nice pictures-fun facts-my world
>
>
> -----Original Message-----
> From: healeys-bounces at autox.team.net [mailto:healeys-bounces at autox.**
> team.net <healeys-bounces at autox.team.net>]
> On Behalf Of Peter & Veronica
> Sent: Wednesday, June 29, 2011 7:58 PM
> To: Robert Bender; healeys at autox.team.net
> Subject: Re: [Healeys] Dual Circuit Braking system
>
> G'day Robert
>
> I've used a Datsun 240Z master cylinder on my V6 BN1. It's mounted in the
> original position on the frame rail. I do have discs on the front but the
> balance seems fine (car's been on the road for 18 months) Only issue was
> making a bracket to mount the unit to the original bolt holes. I can send
> some photos if you're interested.
>
> Cheers
>
> Peter Linn
> Brisbane Oz
> BN1 Ward Spl coupe
> BN1 Holden V6
>
> PS I had a similar experience with my Series 3 Landrover when a brake
> lining
>
> parted company with the shoe!
>
> -----Original Message----- From: Robert Bender
> Sent: Thursday, June 30, 2011 9:38 AM
> To: healeys at autox.team.net
> Subject: [Healeys] Dual Circuit Braking system
>
> Ever since my friend lost a wheel cylinder under heavy braking in traffic
> with his vintage Land Rover and had to do some tricky unplanned off road
> driving to avoid playing
>
> Bigfoot on the cars ahead, I've been pondering the idea of a dual circuit
> braking system in my BN2.  I searched the archives and cannot find much of
> anything for information
>
> on this project.  I realize the Denis Welch and Cape International sell
> units, but they are pretty dear.  I was wondering if anyone else had looked
> into a good candidate
>
> master cylinder from a local parts house like NAPA or AutoZone?  How does
> one determine what size master cylinder bore to look for?  There must be
> some calculation
>
> between the Master cylinder and the wheel cylinder bore sizes.  I plan to
> use the original drum brakes (at least for now), I want to keep the MC
> location on the frame rail, and
>
> I don't want to use a booster.  Has anyone given this any thought?
>
> Oh, by the way, the wheel cylinder that failed on the Rover was nearly new.
> It was not a Girling but rather one of the newer knock-offs.
>
> TIA for any input.
> ... ______________________________**_________________
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