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).
Comparison of standard exhaust heated and simple water hot spot systems, including a graph of average working temperatures at full throttle.
| Identifier | WestWitteringFiles\O\2January1926-March1926\ Scan88 | |
| Date | 12th February 1926 guessed | |
| contd :- -3- that the standard system was considerably superior to either of the other two. Further tests we have made which are given later - go to prove that the temperature rise of the standard exhaust heated system is greater than the other two, also that its normal working temperature is higher. We have further shown by experiment that this proves to be a definite advantage. NORMAL WORKING TEMPS. AT FULL THROTTLE. We here supply curves which show a comparison of the average temperatures of the heating mediums in the hot spot of the standard exhaust and water heated systems. In this case the standard system had the exhaust butterfly throttle wide open :- [Graph Text] Title: AVERAGE WORKING TEMPERATURES AT FULL THROTTLE Y-Axis Label: AVERAGE TEMP °F Y-Axis Values: 600, 400, 200, 0 X-Axis Label: R.P.M. X-Axis Values: 750, 1000, 1500, 2000 Data Series 1: STD EXH HEATED HOT SPOT Data Series 2: SIMPLE WATER HOT SPOT Initials: KCV | ||