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 delivery curves for Merlin engine oil pumps.
| Identifier | ExFiles\Box 149\2\ scan0216 | |
| Date | 29th April 1941 guessed | |
| MERLIN ENGINE OIL PUMPS DELIVERY CURVES WITH DTD 109 OIL AT 90°C. DELIVERY PRESSURE 150 LBS/IN². Y-AXIS: DELIVERY PTS/HR. X-AXIS: ENGINE R.P.M. CURVE LABELS: BY.49. INC. CAP SCAV. PUMP. (ONE ONLY) A BY.49. INC. CAP. PRESS PUMP. ORIGINAL STD SCAV PUMP. (ONE ONLY) ORIGINAL STD PRESS PUMP PUMP : ENGINE RATIO .738 : 1 | ||