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).
Table of test results logging water loss from a cooling system under various conditions.
| Identifier | WestWitteringFiles\K\September1923\ Scan20 | |
| Date | 6th September 1923 guessed | |
| -2- | Test No. | Condition. | Water collected. | Steam. | Total water lost in cts.{C. Trot Salt - Carburation} | lbs. load. | Remarks. | |----------|------------------------------------------------------------------------------|------------------|-----------|--------------------------|------------|----------| | 27 | Extra top water pipe - leads taken from core holes near valve pockets. | 2 1/3 pts. | 2½ pts. | 4⅚ | 128 | | | 28 | | 2½ " | 3¼ " | 5⅚ | 129 | | | 29 | | 2 1/3 " | 2¼ " | 4½ | 129 | | | 30 | | 2½ " | 2¼ " | 4¾ | 128 | | | 31 | All standard. | 2 1/3 " | 2½ " | 4⅚ | 128.5 | | | 32 | | 2½ " | 2¾ " | 5¼ | 129.5 | | | 33 | | 2¾ " | 2¾ " | 5½ | 129.5 | | | 34 | | 2 1/3 " | 2⅔ " | 5 | 129.5 | | | 35 | 2" dia. top water pipe. Standard rad. cap | 2 1/3 " | 4½ " | 6⅚ | 128 | | | 36 | | 3½ " | 3½ " | 7 | 129 | | | 37 | | 3½ " | 3¼ " | 6¾ | 129.5 | | | 38 | | 3 " | 4 " | 7 | 130 | | | 39 | All std. but with 'Chimney' filler cap. | 2 " | 2½ " | 4½ | 126 | | | 40 | | 1½ " | 2 " | 3½ | 126 | | | 41 | | 1½ " | 2½ " | 4 | 127 | | | 42 | | 1½ " | 2 " | 3½ | 128 | | | 43 | Std. Radiator with cowl fitted. | 3 " | 2 " | 5 | 125 | | | 44 | | 2½ " | 2½ " | 5⅚ | 127 | | | ||