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 investigation and testing of several 20-HP ignition coils.
| Identifier | ExFiles\Box 47\4\ Scan059 | |
| Date | 17th August 1923 | |
| Sft.{Mr Swift} for Mr. Brock. X4273 X4118 EP{G. Eric Platford - Chief Quality Engineer}/CEP4/EC17.8.23. 20-HP. IGNITION COIL FAILURES. Further to our memo' EP{G. Eric Platford - Chief Quality Engineer}4/H10.8.23. We note the cause of the failure of Coil No.3478 ex. 4Chassis 80-K-7. We have tested on a chassis Coil No.3016 ex. Chassis 59-S-7 and confirm that this is in order and suitable for service. We have also tested on the road Coil No.3115 ex. Chassis 58-S-3. This coil is still unsatisfactory. For 8 miles on the road it ran satisfactorily and then failed. After standing for a few minutes it functioned again but after a few miles further running it failed entirely. We return this coil to you herewith for further investigations. Please let us have your report. EP{G. Eric Platford - Chief Quality Engineer} Primary shorted An | ||