[Fot] History's Mysteries...Spitfire Duel Master Plumbing...

[John Styduhar]

​Brad, I think you are correct that the dual brake system on your car was
cobbled together in an emergency situation and not as designed. The two
brake master cylinders should be operating separate brake circuits (front
and rear).  ​ The rear cylinder should be plumbed to the rear brake bias
control.  You should rebuild or replace both cylinders.

On Fri, Dec 15, 2017 at 3:21 PM, Brad Eells via Fot <fot at autox.team.net>
wrote:

> Hi Gang,
>
> I am trying to understand what may have happened with the duel master set
> up and it's plumbing.
>
> The front and rear circuits are both coming out of the right hand cylinder
> while the left hand cylinder is returning to itself. The car does have a
> prop valve for the rear brakes located in the cockpit.
>
> One person suggested the the driver may have had a problem during a race
> weekend and simply re-plumbed to make it through a race weekend. The car
> was last raced in Sept 1976.
>
> Should a line for each circuit simply go to each master cylinder? I have 2
> new ones on order.
>
> Your thoughts are appreciated!
>
>
> Brad
>
> *Brad Eells*
> *Chino CA*
> *#35 DP 1962 Triumph TR4*
> *#76 FP 1969 Triumph Spitfire Mk3*
> *1965 Triumph TR4A IRS...for the road!*
>
>
>
>
> *​*
>
>
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