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).
Calculations for servo end pressure for the Peregrine and 20/25 HP models.
| Identifier | ExFiles\Box 105\4\ scan0098 | |
| Date | 15th September 1932 | |
| x5370. FILES. SERVO. 15.9.32. x4027. Peregrine. End pressure on servo = (13.150 / 5.250) X (1.425 / 1.425) X (1.625 / .515) P. = 7.9. P. 20/25 HP. End pressure on servo = (13.1 / 4.350) X (1.187 / 1.350) X (1.850 / .7) = 7.0 P. PII 16.75 / 6.250 + 1.350 / 1.725 - 2 / .582 + 1 / .7 = 10.3 P | ||