Factory Five Racing '33 Hot Rod, Assembly Manual, Page: 120 / 710

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Tighten all the remaining hardware mounting the pedal box to the chassis.
Balance Bar adjustment
The balance bar is an adjustable lever (usually a threaded rod), that pivots on a spherical bearing and uses
two separate master cylinders for the front and rear brakes. Most balance bars are part of a pedal assembly
that also provides a mounting for the master cylinders. When the balance bar is centered, it pushes equally
on both master cylinders creating equal pressure, given that the master cylinders are the same size bore.
When adjusted as far as possible toward one master cylinder it will push approximately twice as hard on
that cylinder as the other.
To set up the balance bar, thread the master cylinder pushrods through their respective clevises to obtain
the desired position. Threading one pushrod into its respective clevis means threading the other one out
the same amount.
Sometimes this will lead to a “cocked” balance bar when the pedal is in the relaxed position, “no pedal
effort”. This is acceptable as long as each master cylinder pushrod is completely free of pressure when
the pedal is relaxed.
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The pushrod adjustment depicted in the figure is representative of a typical asphalt application.
That is, large caliper pistons in front, small caliper pistons in the rear.
It is important that the operation of the balance bar functions without interference by over adjustment.
This can occur when a clevis jams against the side of the pedal or the lever (bolt) hits the pedal bore
during any point of pedal travel.terference.