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).
Requesting a newly standardised ballast resistance be fitted to chassis 22-EX for a 10,000-mile ignition system test.
| Identifier | ExFiles\Box 168a\5\ img043 | |
| Date | 19th February 1929 | |
| To RHC.{R. H. Coverley - Production Engineer} from EFC. c. to Hs{Lord Ernest Hives - Chair}/AJL. X 7720 EFC5/LG19.2.29. We hand you herewith a ballast resistance of the type just standardised, being 1½ value as compared with present standard double value ballast. Will you please have this fitted to 22-EX to bring the ignition system up to date for the 10,000 miles test. Kindly return to us the ballast which will be removed from that chassis. EFC. | ||