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 different configurations of the Peregrine engine at low speed.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page231 | |
| Date | 4th October 1932 guessed | |
| GENERAL DEVELOPMENT PEREGRINE LOW SPEED POWER. RM.{William Robotham - Chief Engineer}PR.34. COMPARISON OF A.{Mr Adams} TURBULENT HEAD SHORT TOED CAMS LEC.3222 FORMS TO E.100861 107° SHAFT B. STANDARD HEAD LONG TOED CAMS. FORMS TO E.100362/3 108 1/2° SHAFT C. ORIGINAL PEREGRINE M.E.P. 1.125 INLET VALVES LONG REACH PLUGS FLEXIBLE SKIRT PISTONS 1.2 INLETS SHORT REACH PLUGS 110° SHAFT 1 5/8" S.U. CARB: 6.25 C/R (ALL CURVES) OPEN EXHAUST. B.H.P. R.P.M. B.M.E.P. LBS./□" INDUCTION DEPN. INS. Hg VALVE TIMING DIAGRAMS: Left Diagram: Ex, In, 107°, 8, 5, 34, 42, .020 Right Diagram: T.D.C., Ex, In, 108 1/2°, 13, 45, 38°, .020 | ||