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).
Ignition troubles for Phantom and 20 HP models for quarters ending December 1929 and March 1930.
| Identifier | ExFiles\Box 61b\1\ scan0086 | |
| Date | 31th March 1930 | |
| IGNITION TROUBLES. Report Quarter ending December 1929. Phantom. 20 HP. Works 12. All Coil Failures. 1 Burning Points, 12 Coils. N. 18 " " 2 " " 16 " P. 3 " " Nil. Report Quarter ending March 1930. Works 6 All Coil Failures. 9 All Coil Failures. N. 22 " " 15 " " , " P. 2 " " Nil. | ||