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 report on a petrol pump supplied by the S.U. Co., comparing its performance against an R.R. pump.
| Identifier | ExFiles\Box 27a\2\ Scan276 | |
| Date | 8th November 1933 | |
| To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Bwg.{J. C. Bowring} X2677. 8.11.33. TESTS MADE ON PETROL PUMP LEC.3614. SUPPLIED BY THE S.U. CO. Pump tested on rig using full length of piping as per Bentley chassis. The first delivery taken was through open pipes, delivery being very poor. Max. pressure .9 lbs/sq.in. At 10 volts 96 pts/hr. At 12 volts 101 pts/hr. At 14 volts 112 pts/hr. On the second test delivery was definitely better. Delivery through floatchamber with floats sunk- At 10 volts 102 pts/hr. - Ditto - At 12 volts 106 pts/hr. Delivery through open pipes At 10 volts 120 pts/hr. Ditto At 12 volts 133 pts/hr. These figures were maintained after the pump had run continuously for approx. 1 hr. Below is given a comparison test for initial priming, one pump being supplied by the S.U. Co. and the other by R.R. Tests made on the incline and on the level starting with the system dry : On Level. S.U. Pump 8 secs. R.R. Pump 11 secs. On Greenbank. S.U. Pump 10.2 secs. R.R. Pump 11.4 secs. The new type pumps supplied by the S.U. Co. is definitely quieter and not objectional when the engine is ticking over. The finish of the pump casting is poor, the enamelling will be worn and scratched off in little time. Hs{Lord Ernest Hives - Chair}/Bwg.{J. C. Bowring} | ||