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).
Graph of power curves comparing carburetor experiments on a Standard Phantom engine.
| Identifier | WestWitteringFiles\T\2July1929-December1929\ Scan098 | |
| Date | 21th October 1929 guessed | |
| EXPANDING CHOKE CARB. EXPTS. POWER CURVES ON STD PHANTOM ENGINE. R.R. EXPANDING CHOKE CARB CHOKE DIA = AND FLOAT CHAMBER WALLS REMOVED. COMPARISON WITH RRCH HAVING 1.53 DIA CHOKE AND STD PHANTOM CARS. B.H.P. R.P.M. RRCH LARGE CHOKE EXPANDING STD PHANTOM. WHc | ||