From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Schematic diagram of a four-wheel brake servo system with force calculations.
| Identifier | ExFiles\Box 182\M20\M20.2\ img036 | |
| Date | 31th October 1924 | |
| M.D.E 60 F.W.B. SCHEME. 45° THD. ON SERVO SERVO SPEED 1/4 ENG. SPEED TAKE TORQUE OUTPUT / TORQUE INPUT = 2.45 .4 CAM. 4.5 FRONT SHOES. 12.9 / G.S. PRESS. AT BRAKE DRUMS WITHOUT SERVO ASSISTANCE FRONT 897 P REAR 675 P WITH SERVO ASSISTANCE FRONT 314 P REAR 237 P DISTANCE MOVED BY CAM BEFORE BRAKES ASSISTED BY SERVO = 1.05 FT. WITH NORMAL ADJUT. OF BRAKES SHOES. REAR 'S' CAM. 152 / 7.7 Diagram Values: P, 15.6, 6.1, 3.3, 3.36, 2.8, 2.375, 7.8, 2", 2.6", 4.6, 7.3, 3.125, T, 4.8, 3.575, 2.85, 2.45, 7" | ||