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 graph of Brake Horse Power vs RPM for a Phantom II engine, comparing a standard carburettor with an air silencer carburettor.
| Identifier | WestWitteringFiles\U\May1930-July1930\ Scan010 | |
| Date | 6th May 1930 | |
| 6-5-30 V850 AIR SILENCER CARBURETTOR (Le C.2786). PHANTOM II ENGINE No SS{S. Smith}-7. STANDARD INDUCTION SYSTEM OPEN EXHAUST BRAKE HORSE POWER. STANDARD CARB. AIR SILENCER CARB. TO Le C.2786. R.P.M. of ENGINE. 40 60 80 100 120 140 1000 1500 2000 2500 3000 | ||