Blueprint graph comparing power outputs for the 7.67 Litre Phantom II engine with an open exhaust.
| Identifier | ExFiles\Box 13\4\ 04-page178 | |
| Date | 3rd October 1933 | |
| 7.67 LITRE PHANTOM ② POWER COMPARISONS (OPEN EXHAUST) H.S. 1196 OLD TYPE IRON SYSTEM & 2 HORIZONTAL CARB WEIR MANIFOLD STD. 116° CAMSHAFT I.O. 13° PTDC E.O. 48° BBDC I.C. 46° PBDC E.C. 3° PTDC R.R. SEMI EXPANDING CARB 114° CAMSHAFT (E.82448) I.O. 5° PTDC E.O. 46° BBDC I.C. 53° PBDC E.C. 7° PTDC 5.25:1 COMP. RATIO BHP R.P.M. M.E.P. (Lbs/sq") LHS {Lord Herbert Scott - Chair} 3.10.33 | ||
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).