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 the B.M.E.P. of a Phantom engine using a Solex twin carburetter versus the standard carburetter.
| Identifier | WestWitteringFiles\T\2January1929-June1929\ Scan107 | |
| Date | 30th January 1929 | |
| SOLEX TWIN CARBURETTER ON PHANTOM ENGINE B.M.E.P. WITH 34 M.M. AND 32 M.M. CHOKES. COMPARED WITH STD. PHANTOM CARBURETTER. 34 M.M. CHOKE GIVES 1.055□" FREE AREA. 32 M.M. CHOKE GIVES .893□" FREE AREA. ONE CHOKE SUPPLIES THREE CYLINDERS. SOLEX 34 M.M. CHOKES SOLEX 32 M.M. CHOKES STD. PHANTOM CARB. B.M.E.P - LBS/□" R.P.M. 500, 1000, 1500, 2000, 2500 70, 80, 90, 100, 110, 120 AEx/30/1/29 | ||