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 comparison graph of J1 and Peregrine engines, showing M.E.P., B.HP/Litre, and B.M.E.P. against R.P.M.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page196 | |
| Date | 6th July 1932 guessed | |
| RM.{William Robotham - Chief Engineer}PR.10 COMPARISON OF J1 AND PEREGRINE M.E.P's. CURVES AT C/R 5.85. PEREGRINE 1 5/8? SINGLE HORIZONTAL S.U. PEREGRINE SPECIFICATION AS PER RM{William Robotham - Chief Engineer} PR.5 JAPAN II 1 7/8 B.H.P./LITRE. B.M.E.P. R.P.M. Left Valve Timing Diagram (①): IN: 6 38.5 EX: 32 9 CLCE: .020 Right Valve Timing Diagram (②): IN: 6 44 EX: 53 6 CLCE: .020 Graph Lines: ① B.H.P./LITRE ② ② J1. ① PEREGRINE PEREGRINE INLET .004 EX .028 CURVES WITH NORMAL TAPPET CLCE .004 & .006 Axis Values: B.H.P./LITRE: 30, 20 B.M.E.P.: 120, 110, 100, 90, 80, 70 R.P.M.: 500, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000 | ||