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).
Test data for a Phantom II Petrol Pump, measuring delivery rates in pints per hour and maximum pressure with various spring configurations.
| Identifier | ExFiles\Box 17\5\ Scan081 | |
| Date | 23th September 1931 | |
| P.11 PETROL PUMP. Lec.2907/9 STD. TANK. PIPES & PETROL PUMP: ENGINE R.P.M.: 0.5:1 X460 DELIVERY PTS/HR. PUMP SPEED R.P.M. Std. Springs Upper Spring 3.5 lb Lower Spring 10 lb 0 lb/sq" | 1 lb/sq" Upper Spr. * 3.5 lb Lower spr. 20 lb. * Upper Spr. 14 lb Lower Spr. 20 lbs. Upper spr. Removed (Direct Lift) Lower Spring 20 lbs. 0 lb/sq" | 1 lb/sq" Max. Pressure No Delivery Std. springs 3.5 & 10 lbs Ins Hg | lb/sq" 300 | 46.2 | 12 | 70.8 | 88 | 124 | 97.5 | 3.4 | 1.67 500 | 50.7 | 21.8 | 76.6 | 76.6 | 109 | 103 | 4.2 | 2.07 750 | 55.4 | 17.4 | 81.1 | 88 | 129 | 120 | 4.2 | 2.07 1000 | 56.1 | 25 | 78 | 90 | 120 | 124 | 4.2 | 2.07 1250 | 59.7 | 30.2 | 79.4 | 88 | 92 | 88 | 4.2 | 2.07 1500 | 61.9 | 33 | 73.9 | 95 | 103 | 78.5 | 4.6 | 2.26 1750 | 55.9 | 16.3 | 60 | 78.4 | 92 | 82 | 4.4 | 2.17 2000 | 41.9 | 20.6 | 47.7 | 46.7 | 63 | 70.6 | 4.4 | 2.17 * Delivery pressure nil. 27-EX Petrol Pump now has upper spring removed (direct lift) Lower spring standard - 10 lb. The 20 lb spring used for tests will not fit in crankcase. | ||