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 Spectre petrol feed, mandating scheme LeC.4648 and highlighting the need for a new tap design to prevent syphoning.
| Identifier | ExFiles\Box 95\4\ scan0180 | |
| Date | 15th October 1935 | |
| x 351 To E.{Mr Elliott - Chief Engineer} c. to By.{R.W. Bailey - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}11/KW.15.10.35. SpectreCodename for Phantom III Petrol Feed. The only scheme of which we have satisfactory experience in hot weather in France is that which was fitted to SpectreCodename for Phantom III III. i.e. scheme No. LeC.4648. We have therefore no option but to instruct this for any further cars which are produced. We have, however, definitely established that when the filter is cleaned petrol will syphon out of the tank unless a tap is provided on the suction side. We understand that so far no such tap has been designed and that it is considered it will be difficult to make it accessible. The position is, however, that we must provide something for the cars now being made. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||