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).
Recommendations for engine cooling modifications to prevent water boiling, particularly for hot climates.
| Identifier | ExFiles\Box 66\2\ scan0042 | |
| Date | 29th April 1925 | |
| 48230 Extract from R1/M29.4.25. X.8770 X.2565 WATER BOILING 40/50 X.766 X.8230 For the hot climates, and preferably generally, I am recommending that we cancel the valve in the exhaust pipe, using an induced system of circulation, or revert to the water heated throttle both on the 40/50 and EAC. This, with the slightly better and much easier driven fan, (not the high speed one) the louvred bonnet, and 1" larger radiator, and later with the EAC, overhead valve engine which heats less water per HP., we ought to be in a better position. We now only await Sales permission for the last 1" of height in the radiator, if less boiling is still desired at the sacrifice of more cost, weight, and less easy sight of the car front. R.{Sir Henry Royce} | ||