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).
Comparison of running temperatures between an experimental L.C. type coil and a standard S.S. coil.
| Identifier | ExFiles\Box 69\1\ scan0242 | |
| Date | 17th October 1929 guessed | |
| -2- from which it will be seen from comparison with the previous results quoted that in the same circumstances of running, the L.C. coil temperatures are, as anticipated would be the case, slightly less than for the S.S. standard coil. This was largely the reason for the experimental introduction of the larger core for L.C. type coil. EFC. | ||