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 showing power output versus RPM for a long duration camshaft on a China Unit engine.
| Identifier | ExFiles\Box 181\M13\M13.2\ img075 | |
| Date | 23th July 1931 guessed | |
| CURVE I POWER OUTPUT LONG DURATION CAMSHAFT. CHINA UNIT 3.25 BORE. 116° CAMSHAFT 5-1 C/R ZENITH TRIPLE DIFFUSER CARB ON EXHAUST SIDE OF BLOCK B.H.P. / LITRE 23.6 B H P R.P.M VALVE TIMING DIAGRAM: EX IN 7° 54 48 .020 CL'CE INLET DURATION 227 EXHAUST DURATION 235 INDUCTION PIPE DEPN INS / Hg | ||