Specifications

THE BRAKING SYSTEM
A dual circuit hydraulic system, with in-car
brake balance control, actuates Automotive
Products four-pot calipers at the front, fitted to
267mm diameter by 25.4mm thick ventilated
discs. Solid rear discs, 251mm diameter by
9.6mm thick are supplied complete with
appropriate caliper mounting brackets and alloy
hubs.
An hydraulic handbrake conversion kit is
supplied, and includes the modified bracket,
spacer and hydraulic cylinder.
Aircraft
specification, stainless steel `Aeroquip' type brake
pipes have been developed and come as a
package, complete with all the necessary elbows
and bulkhead fittings. The designated brake pipe
l ayout is shown in the accompanying diagram,
and the individual pipe lengths have been
optimised for installation in accordance with that
scheme.
INSTALLATION AND ASSEMBLY
Care must be taken whilst handling ALL brake
system components, and before connecting
i
ndividual pipes and fittings together it is
suggested that they are `blown out' with an
airline to ensure they are free from dirt, etc.
Lay the flexible pipes roughly in place inside
the shell to get the general idea as to where they
will be finally sited.Reference to the general
schematic diagram will indicate the position in
more detail. Because the pipe lengths are fixed, it
is advisable to partially secure the pipe-run to the
bodyshell before marking out the positions
where the pipes pass through bulkhead panels.
Holes can then be made for the appropriate
bulkhead fittings, and once the pipes are
connected up in their correct positions, they can
be finally secured neatly, to the panels using
proprietary clips.
The twin master cylinder pedal-box assembly
attaches to the original brake servo mounting
studs.
The 0.7" cylinder is for the FRONT
brake system, the 0.75" cylinder is for the REAR
brake system. A flexible drive cable, fitted with a
hand control that can be mounted on an
auxiliary bracket or on the centre console,
connects to one end of the brake balance
adjustment beam. This operates the brake
balance adjustment beam from within the car.
Special brackets are supplied to convert the
handbrake to hydraulic actuation. The master
cylinder support bracket should be welded to the
centre tunnel, behind the handbrake lever. Refer
to the photograph for exact position. The 5/8"
master cylinder attaches to this bracket complete
with the spacer block. The pushrod is then
attached to the handbrake lever using the
adaptor brackets supplied, and they should be
welded to the handbrake lever. They should be
positioned such that when the handbrake lever is
i n the `OFF' position the pushrod is `FULLY'
extended from the master cylinder. Remember,
this handbrake is NOT fly-off action, and should
this be required is left to the discretion of the
vehicle builder.
The front brake disc, is first attached to an
alloy adaptor plate which is then placed over the
drive flange. The brake caliper can then be fitted
over the disc assembly and attached to the
knuckle using the high-tensile cap headed set
screws. The front discs are handed, and to
maximise the brake cooling advantages must be
fitted such that air is drawn through the disc
from the inside of the disc, by the webs in the
casting during forward motion of the vehicle.
The front brake pipes must be connected as
shown in the diagrams and photographs.
However, check the installation to ensure that
they have sufficient articulation throughout the
available suspension travel and wheel lock
angles.
A special alloy bracket is provided to attach
the rear brake calipers to the rear suspension
beam. These brackets fit between the stub axle
and the rear axle beam. Fit the wheel bearings
and the grease seal into the alloy rear wheel hub
supplied, and fit the wheel studs.
Assemble on to the stub axles, securing the
outer taper roller bearing with its locking
washer, castle nut and split pin, following the
normal service procedure at all times for this
operation. The brake discs and calipers can now
be fitted. Connect up brake pipes and secure
neatly to rear axle beam where required.