Performance graph comparing the effect of various tappet clearances on a Peregrine engine's BHP and BMEP against RPM.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page193 | |
| Date | 29th June 1932 guessed | |
| COMPARISON OF VARIOUS TAPPET CLEARANCES. RM {William Robotham - Chief Engineer} PR7 PEREGRINE(Experimental Bentley car never produced / Aero Engine) 105.5° CAMSHAFT 1 5/8 S.L. 5.85 C/R OPEN EXHAUST PLUG REACH .950 VALVES DIAL AND LIFT AS ON RM {William Robotham - Chief Engineer} PR5 .020 .015 .004 & .006 B.H.P. R.P.M. B.M.E.P. Lbs/sq" IN EX 17 31 40 .020 CLCE | ||
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).