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).
The mileage testing of Redmanol encased battery ignition coils.
| Identifier | WestWitteringFiles\M\2April1925-June1925\ Scan51 | |
| Date | 4th May 1925 | |
| To R.{Sir Henry Royce} A.{Mr Adams} & E.{Mr Elliott - Chief Engineer} from EFC. c. CJ. & FN. c. Ds. Hy{Tom Haldenby - Plant Engineer} c. Wor.{Arthur Wormald - General Works Manager} Rg.{Mr Rowledge} ORIGINAL EFC3/T4.5.25. X.4079b -> REDMANOL ENCASED BATTERY IGNITION COILS. ------------------------------------------------- Further to our report EFC1/T14.10.24, the following table gives the record of the mileages of the three coils TM1, TM2, TM3 and TM5 to present date, side by side with mileages given at the time of that report:- Coil. Mileages to 14.10.24 Mileages to present date. TM1. 6,322 14,942. TM2. 13,781 19,530 TM3. 3,331 18,103 TM5. 801 6,308 N.B. TM4 was accidently damaged and is therefore not included. The above mileages of these four coils have been covered without any report of failure or suggestion of failure. Further work in this direction consists in running three coils of the new RAC. type in Redmanol cases; these are expected for experimental test shortly. It is agreed that standardisation could not be considered until consistent reliability of material used can be proved. For this, it would be necessary to run a relatively large number of these coils in batches at intervals. EFC. | ||