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).
The unsatisfactory results from testing a petrol reserve warning light system on model 1-B-IV.
| Identifier | ExFiles\Box 88\5\ scan0107 | |
| Date | 10th August 1934 | |
| To Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}: V257/ 10.8.34. Petrol Reserve Warning Light on 1-B-IV. ----------- We have tried this scheme out but with no satisfactory results. The car was run until reserve level was reached (this was checked by tap). After coming on to reserve the warning light came on but not permanently and it was not until there was only one gallon in the tank that the light became permanent. The method of making contact is by no means definite enough. The contacts are mounted on copper strips which do not spring back to their original positions when the tank is filled, hence we get a variation of warning to the extent of perhaps as much as one gallon. P.T.O. | ||