Brakes Front and Rear- only for 1972



The front brake on the 1972 GT has a  Lockheed CP2195 two piston alloy caliper gripping an extremely heavy  276mm solid cast iron disc. The caliper, which was considered light weight in its day weighs in at 1075 grams ( approx. 2 pounds 6 ounces ) with half worn pads. The disc tips the scales at..........( my scale only weighs up to 2kg and it broke that easily ! )  The inner part of the front disc rotor  was originally painted silver, not black. The rear brake assy doesn't weigh a lot less when you include the hub, drum, shoes and actuating arm. It is however of the conventional single leading shoe type and a handy stopper in a pinch.
The rear brake torque arm is chromed held at the drum end with a castellated nut and split pin. Rear brake cable locknut behind the knurled adjuster is a 7mm thread.
Click on the rear brake image for a better view of the lever adjuster assy.

Front Master Cylinder

The front master cylinder fitted is the Lockheed CP2215 which provided very little feel and requires a heavy hand to produce an effect better than simply impeding progress.
The anodised finish on these components is original, the colour true to life. The master cylinder was fitted with a boot on the brake line outlet.

Rear Brake Actuating Lever

The rear brake lever pivots off the left hand footpeg mount. A spring wrapped around the lever and the shaft, provides the return. Two circlips are fitted to the end of the shaft to retain the lever assy.

Fitting Dual Disc Brakes

In an effort ( sic ) to increase the braking effect, some owners have fitted dual discs.
To achieve this you will require
1 x solid disc
1 x  right side Lockheed CP2195/12/13 caliper ( good luck finding one of these )
1 x angled Veglia speedo drive
1 x custom master cylinder end bolt drilled to take an extra line, or a custom made brake line splitter and brake lines to suit whichever method you choose.
4 x brake disc mounting bolts from a later dual disc model bike.  Note :

1. Consider if you have original handlebars there isn't sufficient room to add a longer outlet bolt and that if a splitter is to be used it must be located somewhere, probably on the lower triple tree.
2.You will also require the master cylinder to be sleeved down to a suitable size to provide effective lever effort and response.
3. With the extra unsprung weight and improved braking force, the damping of the forks will require modification. Gold Valve Emulators can be adapted to compensate. The original three fin Lockheed calipers and master cylinder have been reproduced by Lockheed following the disastrous fire at the British Motorcycle Museum, however the logo has changed.
Below are images of the original 3 fin calipers in both left and right configuration. Click on the image for a close up view of the caliper part numbers which are cast in near the mounting bolt hole.



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