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 records and reliability of Redmanol encased battery ignition coils.
| Identifier | ExFiles\Box 45\4\ Scan285 | |
| Date | 4th May 1925 | |
| To R.{Sir Henry Royce} & E.{Mr Elliott - Chief Engineer} from EFC. c. c. CJ. & PN.{Mr Northey} c. Da.{Bernard Day - Chassis Design} Ry. c. Wor.{Arthur Wormald - General Works Manager} Rg.{Mr Rowledge} X40796 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 TR{Capt. F. W. Turner - Finance}1, TR{Capt. F. W. Turner - Finance}2, TR{Capt. F. W. Turner - Finance}3 and TR{Capt. F. W. Turner - Finance}5 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. TR{Capt. F. W. Turner - Finance}1. 6,322 14,942. TR{Capt. F. W. Turner - Finance}2. 13,781 19,530 TR{Capt. F. W. Turner - Finance}3. 3,331 18,103 TR{Capt. F. W. Turner - Finance}5. 801 6,608 N.B. TR{Capt. F. W. Turner - Finance}4 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 EAC. 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. | ||