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 comparing performance results from Solex twin carburettor tests on a Phantom II engine.
| Identifier | ExFiles\Box 121\2\ scan0132 | |
| Date | 7th June 1930 guessed | |
| SOLEX TWIN CARB. TESTS ON PHANTOM II ENGINE. OPEN EXHAUST RESULTS. POWER CORRECTED FOR TEMP & PRESS. B.H.P. ENG. R.P.H. R.R.C.H 1.190" CHOKE. 32 M/M SOLEX. .893" CHOKES. STD. PHANTOM. | ||