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).
Calculation comparing the unit pressure on servo shoes with Hispano servo shoes.
| Identifier | ExFiles\Box 22\1\ Scan081 | |
| Date | 30th January 1924 guessed | |
| contd:- -2- Calculations show that the unit pressure on the RR. servo shoes is approximately 1/5 times the unit pressure on the Hispano servo. Hs.{Lord Ernest Hives - Chair} | ||