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).
Extract regarding the need to fit primers on all engines, based on experience with chassis 7CA.
| Identifier | ExFiles\Box 61b\3\ scan0029 | |
| Date | 10th July 1917 guessed | |
| X. 3175.523 86027. Extract.-R14/W9916. RE CHASSIS 7CA. This car was fitted with a starter which behaved quite satisfactorily, but the engine required priming first thing in the morning, so it is very desirable to fit primers on all engines. | ||