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).
Letter to Capt. Gordon regarding the car's generator and the requirements for boiling water.
| Identifier | ExFiles\Box 89\5\ scan0004 | |
| Date | 17th January 1939 | |
| 261 Rm{William Robotham - Chief Engineer}2/R.{Sir Henry Royce} 17th January, 1939. Capt.-Cdr.{W. J. Chandler - Chief Clerk} B.de V.{VIENNA} K.{Mr Kilner} Gordon, "Meadowcroft", Brookland Road, Westbury Park, BRISTOL. 6. Dear Capt. Gordon, Further to our conversation last week with regard to generator on your car, we have now been into the matter and find that in order to raise the temperature of 1 pint of water from normal temperature to 100°C you will require 20 amperes for 18 minutes. To produce this output it will be necessary to run the engine @ 860 R.P.M., and the petrol consumption during this period will be two pints. Obviously if you had a stainless steel container fitted to the connecting pipe of the exhaust system you could carry water in it at a temperature of 80 to 90°C, which would cut down the current required to bring it to boiling point to a quarter. The other alternative would be to definitely increase the current taken out of the system to cut down the time element, and, under these circumstances, if it were accepted that the battery could be brought down to half discharge water could be boiled from cold in 9 minutes. 20 minutes normal running would be required afterwards to re-charge the battery. Yours faithfully, For ROLLS-ROYCE LTD. | ||