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).
Reducing the petrol reserve in the Autovac and altering the stand pipe height.
| Identifier | ExFiles\Box 17\5\ Scan049 | |
| Date | 1st March 1930 | |
| To BY.{R.W. Bailey - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} C. Da.{Bernard Day - Chassis Design} E.{Mr Elliott - Chief Engineer} Handwritten: X7460 Hs{Lord Ernest Hives - Chair}/Rns/16316. 3.30. Handwritten: X7460 X7510 Re: Two Gallon Reserve in Autovac. With the reversion to the two gallon reserve in the rear tank, we are reducing the quantity of petrol trapped by the stand pipe in the autovac to 2 pints, this being adequate to draw the fuel from the rear tank. The object of this move is to lessen the chance of starvation when the car is driven full throttle and the vacuum pump cannot keep pace with the engine requirements. The new height of the stand pipe should be 1.50" above the base of the tank inside. Please ensure that the instruction book is amended when the alteration is made. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||