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 the power output of a Phantom II engine with a standard versus a larger expanding carburettor.
| Identifier | ExFiles\Box 13\4\ 04-page118 | |
| Date | 3rd March 1933 | |
| RM{William Robotham - Chief Engineer} P54 V1525 POWER OUTPUT (PHANTOM II) OPEN EXHAUST. COMPARISON BETWEEN STD EXPANDING CARB. (E.83441) AND LARGER EXPANDING CARB. (LEC. 3137) (INTAKE BODY (E.83924)) 5.25:1 COMPRESSION RATIO 114° CAMSHAFT (E82448), TIMING .020 CL'CE LEAD-BRONZE BIG END BEARINGS IO - TDC IC - 56° PBDC EO - 51° BBDC EC - 8° PTDC EXP'DG CARB. TO LEC. 3137 STD " " E.83441 BHP R.P.M. MEP LBS/SQ" INDN DEP'N INSX Hg | ||