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).
Control of radiator water temperatures and the use of thermometers.
| Identifier | ExFiles\Box 39\4\ Scan027 | |
| Date | 2nd June 1919 | |
| -2- To CJ. from R.{Sir Henry Royce} temperatures. This is being investigated, but it was quite my impression that it was nearly useless to provide a man with a thermometer to indicate his water temperature without some means of controlling it. It is, however, of considerable use in indicating how much of his radiator he should usually stop off and it was for this purpose that we decided to fit the thermometer, which had already been forecasted on the note we circulated re low grade fuels, benzol etc. It will be noticed by the correspondence during the early part of the War, that we strongly advised for aeroplane work, louvres, shutters, or roller blinds to control the temperature of the water in the radiators. The circumstances here are very similar to those in the car, only the temperature variation through which a car passes is not a subject of a very few minutes but a matter of a few months. It therefore gives one the chance of fitting something which is much less facile to adjust, and therefore might permit of the simple stopping off of the radiator with plates or boards, as originally suggested by us as a temporary measure. You may rely on the technical staff being very keen on appearance as well as the Sales Dept. R.{Sir Henry Royce} H.R. 235A (500) (S.D. 403. 28-4-17) Bin. 2158/13. | ||