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).
Modifications for petrol tanks, gauges, and reserve devices, including a new double level device.
| Identifier | ExFiles\Box 42\4\ Scan091 | |
| Date | 31th July 1920 | |
| To Da{Bernard Day - Chassis Design} from R.{Sir Henry Royce} By Copy to CJ. " " Hs.{Lord Ernest Hives - Chair} " " EFC. X.3889 R1/G31.7.20. X.3888. X.3889. RE PETROL GAUGE AND RESERVE DEVICES. X.3451 Concluding that Derby were not making sufficiently quick progress with the modification to the petrol tank, we have here done further work upon it. We are sending you to-day a suggestion for working out the double level device which is better and simpler than anything we have so far seen. We hope you will get it in hand at once. We are sending also instructions for modifying the side filler so that there shall be less risk of air-lock during filling. We think the difficulty of making the joint comes about from the fact that the jointing washer and its cap are not spigoted, and therefore, after being pressed down in one place, might, when pressed down in another place, require excessive pressure to get rid of the first impression, whereas, if it were spigoted it would always set itself in the same concentric manner. Kindly therefore have tested some steel caps turned from the bar and arranged to spigot a s-light undercut to help to retain the fibre washer. Try leather and soft fibre as well as the hard fibre, which latter we should prefer. X.4174. X.3701. X.3896. We do not intend to keep the present filter and filler but would in all cases of side filler, fit the double level device, and if possible, a petrol gauge, as with a side filler one cannot gauge the petrol. The tank must have a sump for Contd. | ||