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).
Typed letter discussing overnight fuel loss and potential faults in the tank unit or gauge.
| Identifier | ExFiles\Box 44\2\ Scan082 | |
| Date | 13th July 1927 | |
| Messrs. Rolls-Royce, Ltd., Date 13. 7. 27. Page 2 doing in the meantime to remove any unknown factors in the situation. Our experience is that the over-night loss varies between half to three-quarters of a gallon. We cannot explain this very small variation, but it seldom exceeds three-quarters and is seldom less than half. The only conceivable possibility that occurs to us is that faulty manufacture of the tank unit itself, or the use of a faulty tube, may have caused the variation in the case of one particular gauge, but we are astonished that more than one gauge should vary to the same extent. If you can trace one of the gauges which has displayed the feature of the three gallon loss, we shall be much obliged if you will at once inform us of the drawing number of the tank in this particular installation, also the model of car, so that we may make up a new tank unit, air line and dash unit, carefully test them here, and then either come to your works, or send them to you, and ask you to change the three units, one at a time, to ascertain which part of the system is causing the trouble. We are ourselves inclined to suspect a leak in the tank unit, where the air tube enters the top bell, or just above this point. In some of the first consignments of tubing, from | ||