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).
Notice advising users on radiator management for economical engine operation during autumn.
| Identifier | WestWitteringFiles\D\October1919\ Scan15 | |
| Date | 29th October 1919 | |
| EH To B.J. from R.{Sir Henry Royce} Copy to C.J. ORIGINAL. R5/G20/10/19. 4 RECEIVED 29. OCT 1919 Dear B.J., X3653 X3456 RE RADIATORS. It is a very opportune time of the year to warn users of R.R. cars that as the radiators are large enough for Tropical climates and hot summer time, it is advisable at this autumn time to see that part of the radiator is covered to enable the engine to maintain itself at an economical temperature of about 70/80°C. We do not consider it will be found too much to block off the upper half of the radiator by a plate inside next to the fan, when it will be found that the engine will run more economically and smoothly. Do not confuse this with anxiety about freezing of circulating water. This must be cared for later, and is only dangerous while the engine is not running. Signed F.H.R. Chief Engineer. Yours, R.{Sir Henry Royce} | ||