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).
Diagrams illustrating the effect of vehicle movement on a petrol and fluid system.
| Identifier | ExFiles\Box 44\4\ Scan033 | |
| Date | 8th April 1929 guessed | |
| X4038 P. dry. B. petrol and fluid. Air vent covered with petrol - air escapes out of balance line and petrol enters. Liquid rises and compresses air in balance pipe due to movement of car. | ||