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).
Performance of Spectre carburettors, noting better results with reversed throttle but serious flooding issues.
| Identifier | ExFiles\Box 93\2\ scan0030 | |
| Date | 13th February 1935 | |
| To E.{Mr Elliott - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to Wor.{Arthur Wormald - General Works Manager} c. to By.{R.W. Bailey - Chief Engineer} +308 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}9/KW.13.2.35. SpectreCodename for Phantom III Carburetters. We are getting better results with the reversed throttle slow running on the 20/25 than we are with the normal carburetter. This applies to petrol consumption. The flooding difficulty with the SpectreCodename for Phantom III carburetter is a serious one. The difficulty with the Bentley type of throttle adjustment provided for the SpectreCodename for Phantom III is that you cannot set each carburetter individually. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||