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).
Fuel consumption calculations, engine oil leaks, and a minor issue with the wireless dial light.
| Identifier | ExFiles\Box 108\3\ scan0079 | |
| Date | 27th February 1939 | |
| -2- Rm{William Robotham - Chief Engineer}/JBD{John B. Dixon - Fuel Systems} - 27.2.39. 291 miles shown on speedo or 312 miles (corrected) 24 gallons petrol. Consumption 12.12 m.p.g. which allowing for 7% speedo error,owing to change of rear axle ratio = 13 m.p.g. As the engine was over filled with oil to start with owing to leaks no figure is available and about 1 qut. was added after 130 miles. Apart from the oil leak from the front and rear bearings it is also leaking from the rocker cover. The light on the wireless dial is too bright at night. Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems} | ||