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 supply the Experimental Department with two experimental ignition coils.
| Identifier | ExFiles\Box 69\1\ scan0199 | |
| Date | 10th May 1929 | |
| X8710. To Mr. Brock. EFC1/T10.5.29. EXPERIMENTAL COILS. Will you please supply Expl. Dept. to O/N.54733 with two ignition coils of 20,000 turn secondaries and without the extra insulation at the end. Also with paraffin waxed paper insulation. The Drg. No. incorporating these items is D.71919. We are able to supply you with two cores and cases suitable for these coils. EFC. | ||