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).
Page 3 of a report comparing the performance of different coils at various temperatures, with a recommendation for further testing.
| Identifier | ExFiles\Box 45\4\ Scan255 | |
| Date | 15th July 1924 guessed | |
| Contd. -3- The average current taken by the primaries of the coils at 12 volts when hot was as follows :- TR.{Capt. F. W. Turner - Finance}1 1.15 amperes. TS.6. 1.115 " TR.{Capt. F. W. Turner - Finance}5 1.15 " 4353 1.26 " It will be seen that the redmanol encased coils in th both cases gave better results than the stabalite at all four temperatures 77°, 82°, 87° and 100°C, and it is suggested that they should be given further thrashing tests on a chassis in a thoroughly hot condition. EFC/HEW. | ||