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 tank design modifications to prevent spillage and improve component arrangement.
| Identifier | ExFiles\Box 61\3\ scan0188 | |
| Date | 22th May 1931 | |
| Messrs.Rolls-Royce,Ltd., Date 22.5.31. Page 2 The outside cover has no connection to atmosphere other than through the union and the vent pipe, which is led outside the apron. We hardly recommend our even making a trial of the suggestion shown in the shaded lines, as we fear that we should get into trouble at this height; we have shown it to you on the drawing merely to illustrate the very lowest we can possibly get down to, to prevent overflow with a filler filled to the height of the top of the tank. We feel sure that there would be excessive spilling as soon as the car got in motion, and we would strongly recommend your permitting us to adopt dimension 1 13/16" from the face of the flange to the top of the dome. You will notice that we have adopted a flange identical with the petrol feed arrangement on the other side of the tank, as this enables us to bring the cover of the unit top inside the fixing screws. We have also inclined the air line connection towards the channel in the top of the tank, which we think would be suitable. It is further to be noted that we have retained the same angle and the same centres as the petrol feed arrangement on the tank, although the tank itself is marked with the centre line for our unit position somewhat further back. WH. | ||