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).
Comparing the priming capacity and output of two S.U. petrol pumps under different conditions.
| Identifier | ExFiles\Box 27a\2\ Scan277 | |
| Date | 14th November 1933 | |
| To E.{Mr Elliott - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c.c. to By.{R.W. Bailey - Chief Engineer} X2677 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}12/KT.14.11.33 S.U. PETROL PUMP TO LEC.3614. We have queried the restricting of the inlet valve lift of the petrol pump by Skinner, because we find that it reduces the maximum output of the pump without making an appreciable difference to its priming capacity. A comparison between two pumps, one recommended by S.U's. and one we recommend, tested on a gradient one in five, is as follows :- On Greenbank. S.U. Pump.10.2 secs. R.R. Pump 11.4 secs. On Level. S.U. Pump. 8 secs. R.R. Pump. 11 secs. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||