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).
With calculations for the servo to rear brakes lever system.
| Identifier | ExFiles\Box 83\2\ scan0285 | |
| Date | 7th March 1938 | |
| MEMO. 1/7.3.38 2. SERVO TO REAR BRAKES <- P LBS FROM SERVO LEVER CROSS SHAFT IDLER LEVER <- R LBS TO REAR BRAKES R = P x E/B x C/D ORIGINAL SCHEME - R = P x 1.25/2.625 x 2.5/3.375 = 0.353 P 1ST CHANGE - R = P x 1.25/2.625 x 3.375/3.375 = 0.476 P 2ND CHANGE - R = P x 1.25/3.25 x 3.375/3.375 = 0.384 P 3RD CHANGE - R = P x 1.5625/3.25 x 3.375/3.375 = 0.480 P | ||