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).
The small petrol reserve supply and the importance of not allowing the fuel system to run dry.
| Identifier | ExFiles\Box 15\7\ Scan140 | |
| Date | 16th May 1930 | |
| To BY.{R.W. Bailey - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to NW.{N. Walker - Patents} For Depot Sheet. 87530. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}3/MJ.16.5.30. In view of the fact that a level indicator is provided on the instrument board to shew the driver the quantity of petrol in the main tank any moment a very small reserve supply of petrol is provided. This is only sufficient to run the car about 4 miles. If this supply is exhausted the carburetter pipe-line, filter, autovac, and line to the tank at the rear, are all left dry. The results of this is that the engine will have to be run for over a minute on the starter motor after the rear tank has been filled before fuel will reach the carburetter. This is obviously most undesirable and in consequence every endeavour should be made to fill up the main tank before the reserve of petrol us exhausted. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||