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).
Examination of the Packard car's petrol tank reserve compartment, with a diagram and discussion of its design flaws.
| Identifier | ExFiles\Box 127\1\ scan0107 | |
| Date | 1st August 1920 | |
| R.R. 235A (100 T) (S.G. 643. 19-2-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2618 X 435. To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to Bn.{W.O. Bentley / Mr Barrington} c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to By.{R.W. Bailey - Chief Engineer} Hs{Lord Ernest Hives - Chair}2/LG6. 8. 20. X. 435. PACKARD CAR PETROL TANK. X. 3888. X. 3451. We have examined the method they have on the Packard Car for providing a reserved compartment in the tank for petrol. It is carried out as follows:- [Diagram of a petrol tank with a reserve compartment] Handwritten labels on diagram: - Filler - Two-way petrol tap. - Reserve compartment This scheme has the advantage of being simple, but has the disadvantage of introducing another petrol tap which must be petrol-tight and air-tight. Also if one is using the petrol in the reserved compartment and only a small quantity of petrol is added to the tank, this does not get into the reserved compartment and that to use that petrol up, the tap has to be turned on to the main tank. It has the disadvantage that if the tap is left in the reserve tank, the whole of the petrol is used up. Hs.{Lord Ernest Hives - Chair} | ||