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 showing fuel consumption (PTS/BHP HR) against engine speed (RPM) for a Bentley engine with varying fuel head pressures.
| Identifier | ExFiles\Box 27a\2\ Scan231 | |
| Date | 31th July 1933 | |
| UNIT C XI BENTLEY CARBURATION RM{William Robotham - Chief Engineer} B 15 / JULY 31 '33 COMP RATIO 4.85 : 1 CAMSHAFT EB.318 / (1 3/4") 2 - 1 3/4 SU CARBS ON PIPES EB949 I.S. MOD A.10401. RESTN V.583 COMPLETE AIR SILENCER COMPLETE EXHAUST SILENCER OFF B.I CHASSIS. FULL THROTTLE METERING No RR.X. NEEDLES (JETS SET FOR SLOW RUNNING) PRATTS "ETHYL" 1 FUEL HEAD = 3" (0.41 LBS. SQ. IN.) 2 " " = 6" (0.82 " " ) 3 " " = 10 1/2" (1.64 " " ) PTS / BHP HR R.P.M. C.R.S. | ||