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).
Graph of comparative power curves at full throttle for a moderate supercharger engine, comparing standard and long duration camshafts.
| Identifier | ExFiles\Box 33\4\ Scan132 | |
| Date | 20th December 1928 | |
| R.R. F.XII-MS-113 MODERATE SUPERCHARGER ENGINE COMPARATIVE POWER CURVES AT FULL THROTTLE. A WITH STANDARD CAMSHAFTS. B WITH LONG DURATION CAMSHAFTS. FUEL:- 60/40 BENSOL/AVIATION PLUGS:- LODGE R.40 INCREASE IN HORSE-POWER OBTAINED +27 +28 +35 CORRECTED BRAKE HORSE-POWER CRANKSHAFT R.P.M. --N.R.P.M-- A B Y.H 20-12-28 | ||