I used two clutch masters since they were the same size as the brake master
on my Mk1 Spit. The only difference was the size of the reservoir which I
figured was sufficient for half the braking system and so far I have been
proven correct.
Joe C.
-----Original Message-----
From: fot-bounces@autox.team.net [mailto:fot-bounces@autox.team.net] On
Behalf Of Scott Janzen
Sent: Thursday, February 11, 2010 5:57 PM
To: Bill Bartlett
Cc: 'Friends of Triumph' Triumph
Subject: Re: [Fot] (no subject)
My GT6 came to me with a single cylinder master, which I did not feel
comfortable with. I bought a tilton bias bar and two Girling masters
- originally got Tilton masters, but the integral reservoirs were a
little too tall and interfered with the bonnet. Fab'd a mounting
assembly out of heavy gauge sheet metal, welded up, and had the Tilton
bias tube grafted/welded on the top of the stock brake pedal.
I fiddled with the bias adjustment a bit, and have it so the fronts
lock up a little before the rears. I suppose if you were racing at
the national level, wanted to adjust for changing fuel loads, wet/dry,
etc, a cockpit adjustable bias might be good. However - I'm not that
good a driver, so close is good enough!
With dual masters, one thing you might want to think about is whether
the front should be a larger bore- given that the pistons/cylinders in
the calipers displace much more fluid than the rear wheel cylinders.
On Wed, 10 Feb 2010 21:58:29 -0500, Bill Bartlett
<BillBartlett@wingnutracing.com> wrote:
> Hi Gents,
> I am curious on the difference between brake "Biasing" and brake
> "proportioning"?
> Given that one has a set up with twin masters, one each for the front
and
> rear brake systems, is it better to use a bias adjustment cable from
the
> cockpit to adjust the amount of force given to the front and rear
brakes,
> or
> should one use a proportioning adjustment valve. The bias bar
> appears to
> work
> by adjusting the amount of force the pedal excerpts on the two
> masters,
> where
> the proportioning reduces the amount of hydraulic force excerpted thru
the
> rear brake line to the slaves.
> What is the deal? Does the Biasing do the heavy lifting and the
> proportioning
> the micro adjustment? I suppose one needs to start with the right
> master
> bores
> to start with eh?
> My car has a bias bar but it is only adjustable by inserting different
> length
> bushings between the clevis and the spherical bearing at the top of
> the
> peddle
> assembly. I am debating whether to upgrade to the Tilton adjustable
pedal
> set,
> put a proportioning valve in or just leave it alone and have different
> bushing
> sets for say wet and dry?
> Thoughts?
> And thank you for your time
> Bill
> PS; this is for a GT6
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