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 results for top cup pumping on a fuel tank.
| Identifier | ExFiles\Box 44\3\ Scan124 | |
| Date | 5th December 1928 | |
| TOP CUP PUMPING TESTS. Calibrations O.K. 1 gallon to 20. Pressure balance cuts off after 20 gallons. Tank F.79192 (K.S.162) installed on carrier of 20 h.p. Rolls-Royce car; petrol being used out of this tank for running car. Vertical bell unit fitted. 1/12/28. Side notes: Dry roads - night driving. London - Aston & Co. Uxbridge. Approx. in tank. Mileage. Gauge. 21 839 0 849 1.5 19.9 859 (20) 1.5 Tank filled 869 1.5 to top of 18.8 879 (40) 4 filler. 889 16.0 17.7 899 (60) 16.0 5/12/28. Side notes: Wet roads. London - Bagshot and return. 20 0 20 20 5969 0 Tank filled 5979 0 to 20 gallons; 18.9 5989 (20) 5.5 "full" mark 5999 16.0 on gauge. 17.8 6009 (40) 16.75 6019 16.5 16.7 6029 (60) 16.0 Rapid pumping takes place within:- 1. From top of filler (2¼ to 2½ gallons, i.e. 30 to 34) 40/50 h.p.car miles. 2. From full mark. (1¼ to 1½ gallons}, i.e. 17 to 21) 40/50 h.p.car miles. | ||