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).
Request to obtain two different 12-volt ignition coils for observation of their performance and construction.
| Identifier | ExFiles\Box 69\1\ scan0259 | |
| Date | 20th November 1929 | |
| X8710. Roy.{Sir Henry Royce} from EFC. EFC1/AD20.11.29. IGNITION COILS. Will you please obtain for our observation in the Electrical Exptl. Dept. the performance and particulars of construction, of the following two ignition coils: One M.L. 12-volt single circuit type X.12 coil and One 6-cylinder Marelli coil presumably 12-volt. It will be understood that it is the ignition coil only that is required in each case, i.e. no distributor is required. EFC. | ||