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).
Comparative testing of a new Redmanol encased ignition coil.
| Identifier | ExFiles\Box 45\4\ Scan215 | |
| Date | 18th December 1923 | |
| X4079c To RHC.{R. H. Coverley - Production Engineer} from EFC. c. Hs{Lord Ernest Hives - Chair}/TMW. c. Mr. Brock. EFC6/T18.12.23. X.4079c - IGNITION COIL. Herewith we hand to you coil TRI which is an up-to-date standard coil with 18,000 secondary turns, but Redmanol encased. This has been handed to us by Mr. Brock for comparative test with the TS coils (4,5 & 6). Would you kindly have this coil fitted to 7GII in place of 5TG3 at present thereon. Will Mr. Warwick kindly note that this coil should be given a good thrashing to prove that under the most unfavourable conditions, it is not subject to the same defect as the mouldensite encased coil. EFC. | ||