Graph comparing the B.M.E.P. of a Phantom engine using a Solex twin carburetter with different chokes against the standard Phantom carburetter.
| Identifier | ExFiles\Box 121\2\ scan0101 | |
| 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. B.M.E.P. lbs/□" R.P.M. SOLEX 34 M.M. CHOKES SOLEX 32. M.M. CHOKES STD. PHANTOM. CARB. a.p/ | ||
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).