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 comparison graph for Standard and Sports Phantom engines.
| Identifier | ExFiles\Box 69\4\ scan0381 | |
| Date | 15th February 1926 | |
| COMPARISON OF STANDARD & SPORTS PHANTOM ENGINES. STD. ENGINE PH. I at throttle E LINK COMP RATIO = 4.1 FLAT CYLINDER HEAD. STD. INDUCTION PIPE. SPORTS ENGINE PH II COMP RATIO = 4.75 ANTI-DETONATING CYL HD.{Mr Hayward/Mr Huddy} WEIR INDn PIPE (Sch 965) VERTICAL CLAUDEL HOBSON CARBURETTOR on WEIR PIPE. B.H.P. STANDARD ENGINE SPORTS ENGINE B.M.E.P. STANDARD ENGINE SPORTS ENGINE AXIS LABELS: Left: BRAKE HORSE POWER Bottom: R.P.M. OF ENGINE. Right: B.M.E.P. (LBS / □'') GRAPH ANNOTATIONS: 108 BMEP 97 BMEP | ||