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 induction systems by plotting Brake Horsepower against Revolutions Per Minute.
| Identifier | ExFiles\Box 65\4\ scan0318 | |
| Date | 23th July 1925 | |
| INDUCTION SYSTEM COMPARISONS. ENG. WITH OPPOSED SPARKING PLUGS (NO 10 SPECIAL) AND STANDARD ENGINES. BOTH TESTS WITH SHORT OPEN EXH. PIPES TO EACH PORT & JACKET WATER COLD. ALSO COLD 'HOT SPOT'. No 10 E.A.C SPECIAL. CURVES FOR TWO STD E.A.C.'s. B.H.P. R.P.M. 2 | ||