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).
Inquiring about the highest recorded temperature under a car bonnet in relation to ignition coils.
| Identifier | ExFiles\Box 69\1\ scan0230 | |
| Date | 8th October 1929 | |
| X8710. Hs{Lord Ernest Hives - Chair}/AJL. from EFC. EFC5/AD8.10.29. TEMPERATURE UNDER BONNET. In connection with the working temperature of ignition coils, would you let us know the highest temperature figure which has ever been recorded anywhere in the air space under the bonnet of a car in normal working circumstances in a hot atmosphere. It is to be understood that the thermometer is not so placed as to be exposed to direct radiation on the exhaust pipe. EFC. | ||