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).
Pump performance test results, examining the effects of varying battery voltage and temperature.
| Identifier | ExFiles\Box 27a\2\ Scan244 | |
| Date | 13th September 1933 guessed | |
| -3- | BATTERY VOLTAGE | DELIVERY PTS/HR. | MAX PRESS PUMP OUTLET LB/SQ. IN. | MAX PRESS END OF DELIVERY PIPE LB/SQ. IN. | |---|---|---|---| | 16 | 147 | 2.7 | 2.0 | | 14 | 147 | 2.6 | 2.0 | | 12 | 138 | 2.6 | 2.0 | | 10 | 124 | 2.5 | 2.0 | | 8 | 60 | 2.4 | 1.8 | The pumps were then run for 8 hrs. - two 4 hr. periods - with thermometers attached to the pump bodies. At the end of the morning run - 4 hrs. - the temperature recorded was 39°C, whilst after the second period one pump had reached 44°C and the other 60°C ( at which temperature the pump ceased to function). Some indication of the variation of the combined delivery with temperature is given by the following readings taken at intervals during this test. | TEMP °C. | | DELIVERY PTS/HR. | |---|---|---| | PUMP A.{Mr Adams} | PUMP B. | | | 26 | 26 | 124 | | 37.5 | 36 | 116 | | 39 | 38 | 109 | | 43 | 43 | 90 | | 44 | 58 | 68 | N.B. It should be noted that the tap was not modified to Hk{Col. T. Harker - Sales}'s sketch for these tests. W. Bell. | ||