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).
Extract from a report on a faulty ignition coil that was causing mis-fires.
| Identifier | ExFiles\Box 69\1\ scan0200 | |
| Date | 30th May 1929 | |
| X8710. 30.5.29. Extract taken from Mr.Hancock's report of 2.5.29. X.8710. IGNITION COIL LOP. D.71650 The coil started to cause mis-fires after a milage of approximately 8,000, and after a further 700 miles it would not fire the mixture. Test taken on an open circuit the spark was very poor. A spare coil fitted was OK. The coil was sent back to Derby for investigation. | ||