Performance graph detailing power losses for the Phantom II Short Type exhaust system, comparing Brake Horsepower and Brake Mean Effective Pressure against engine RPM.
| Identifier | ExFiles\Box 6\7\ 07-page171 | |
| Date | 2nd November 1931 guessed | |
| LOSSES TO EXHAUST SYSTEM. Ph. II SHORT TYPE C.O. OPEN AND CLOSED 4-6 C/R 108° MASKED VALVE CAMSHAFT TWIN CARBS 1.4 CHOKES OPEN EXHAUST COMPLETE Ph II SHORT TYPE EXHAUST SYSTEM C.O. OPEN B.H.P. B.M.E.P. R.P.M RM. {William Robotham - Chief Engineer} P 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).