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).
Diagram showing modifications to a PII clutch required for stiffened clutch fingers.
| Identifier | ExFiles\Box 13\7\ 07-page140 | |
| Date | 26th September 1932 guessed | |
| HS{Lord Ernest Hives - Chair} 704. (1) 4 GROOVES .437" WIDE ADDED IN CLUTCH COVER G.78312. (2) LENGTH OF SLOTS IN CLUTCH WITHDRAWAL FERRULES G.76554 INCREASED BY .187". 1.225 .300 45° 4 GROOVES .437 WIDE. MODIFICATIONS TO PII CLUTCH REQUIRED FOR STIFFENED CLUTCH FINGERS HS{Lord Ernest Hives - Chair} 666. | ||