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).
Blueprint comparing the 'present standard' and a 'suggestion' for a fan pulley and slipper drive assembly.
| Identifier | ExFiles\Box 93\5\ scan0129 | |
| Date | 4th November 1936 guessed | |
| FAN PULLEY SLIPPER DRIVE CRANKCASE (TOP HALF) SUMP PRESENT STANDARD SUGGESTION | ||