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 stiff and flexible pistons on a Peregrine engine.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page228 | |
| Date | 4th October 1932 | |
| RM.{William Robotham - Chief Engineer}PR.29 COMPARISON OF STIFF AND FLEXIBLE PISTONS ON PEREGRINE. 5.98 C/R.{Sir Henry Royce} LONG REACH K1 PLUGS. 1 5/8 SINGLE S.U. CARB: OPEN EXHAUST CAMSHAFT FORMS E.100362 E.100361 TOE REMOVED INLET VALVE THROAT 1.2" DIA: STIFF PISTON E.100035. FLEXIBLE PISTON E.100525. B.H.P. B.M.E.P. R.P.M. Valve Timing Diagram: T.D.C. 8 EX 40 IN 39 .013 CLCE 108 1/2 4.10.32 | ||