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 comparing S.U. and R.R. carburettors by plotting B.M.E.P. and depression against engine speed.
| Identifier | ExFiles\Box 1\10\ B001_X106 TO X 110-page082 | |
| Date | 28th October 1932 guessed | |
| COMPARISON OF S.U. & (R.R. CARBURETTERS LEC 3157) RM{William Robotham - Chief Engineer} PR.31. C/R 6.24 INLET VALVE 1.125 THROAT HEAD E.100520 OPEN EX 108 1/2° CAMSHAFT. TIMED WITH .020 CLEARANCE IO T.D.C. EO 38° BBDC IC 45° PBDC EC 13° P TDC. R.R. SEMI EXPANDING S.U. 1 5/8 BORE SUCTION PISTON R.R. REMOVED B.M.E.P. DEPN INS HG | ||