Performance graph comparing two different camshafts for a Peregrine engine, plotting Brake Horsepower and Brake Mean Effective Pressure against RPM.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page191 | |
| Date | 29th June 1932 guessed | |
| COMPARISON OF CAMSHAFTS (CAM FORMS TO F.10036/1/2) RM. {William Robotham - Chief Engineer} PR.S. PEREGRINE(Experimental Bentley car never produced / Aero Engine) 5.85/R. OPEN EXHAUST. SINGLE 1 5/8 THROTTLE DIA: S.U. PLUG REACH .680 COMP PR AS ON RM {William Robotham - Chief Engineer} PR1 INLET VALVE THROAT DIA: 1.2" (ON) EXHAUST " " .125" LIFT .320 MEASURED Cam 1: Angles: 1°, 3.5, 41, 46 Valves: IN, EX Clearance: .020 CLCE BEST M.E.P OBTAINED INLET .020 EX .020 Cam 2: Angles: 6, 9, 32, 38.5 Valves: IN, EX Clearance: .020 CLCE BEST M.E.P OBTAINED INLET .004 EX .020 Graph Data: VARYING TAPPET CLEARANCE INDUCTION DEPN: Left Y-Axis: B.H.P. Bottom X-Axis: R.P.M. Right Y-Axis: B.M.E.P. LBS/SQ", INDUCTION DEPN. INS. HG. | ||
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).