[Healeys] Do we like brake boosters?

[David Nock BCS]

We install lots of servos on the early 6 cylinder cars. The main improvement 
is that it requires much less pedal pressure to work the brakes. At slow 
speeds it takes a little getting use to.

When they went to the OE power brakes they changed the caliper and master 
cylinder sizes to avoid a sensitive pedal at slow speeds.



David Nock
British Car Specialists
Stockton Ca 209 948 8767
www.britishcarspecialists.com
-----Original Message----- 
From: Simon Lachlan
Sent: Wednesday, February 12, 2014 9:13 AM
To: 'Bob Spidell'
Cc: healeys at autox.team.net
Subject: Re: [Healeys] Do we like brake boosters?

My MkII BT7 has a factory fitted servo. However, the gurus including the
ultimate Mr. "Tricarb" Bolton himself assure me that my car is the exception
that proves the rule. I think they may have been standard on BJ7s; more
likely, they became standard after BJ7 no xyz12345?
Simon

-----Original Message-----
From: healeys-bounces at autox.team.net [mailto:healeys-bounces at autox.team.net]
On Behalf Of Bob Spidell
Sent: 12 February 2014 16:02
To: Michael Oritt
Cc: Austin Healey
Subject: Re: [Healeys] Do we like brake boosters?

Caution: This is a (semi-informed) SWAG.

In general, disk brakes require more braking effort than drums--smaller
friction surface area--so the servo was added when disk brakes became
predominant. I suspect this may not have been evident on the first
disk-braked cars--didn't some cars come with disks and no servo?-- but was
added when it became evident the booster would help.

Also, 'power everything' was popular in the 60s, so it could have been a
marketing thing, too.

Bob

----- Original Message -----



I have never understood why the later cars had--and presumably needed--brake
boosters whereas the earlier ones did not. Can anyone enlighten me?

Best--Michael Oritt


On Wed, Feb 12, 2014 at 8:31 AM, <warthodson at aol.com> wrote:

> I had the "opportunity" to drive my Phase 1 BJ8 (early type front disc
> brakes)
> without the booster. It made a significant difference.
> Gary
>
>
> -----Original Message----- 
> From: Wilko2 <e-wilkins at cox.net>
> Cc: Healey List <healeys at autox.team.net>
> Sent: Wed, Feb 12, 2014 12:09 am
> Subject: [Healeys] Do we like brake boosters?
>
>
> I've not driven a Healey with a brake booster. How much of an improvement
> do
> they make? Are they "all that"?
>
> Thanks,
> Rick
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