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 alter the lower current limit for an ignition coil production test.
| Identifier | ExFiles\Box 69\2\ scan0006 | |
| Date | 4th April 1930 | |
| X8712 Sft{Mr Swift}/Mr. Brock. from EFC. EFCL/AML.4.4.30. X.8781 cl. X.5781 cl. IGNITION COIL PRODUCTION TEST X.8712. Will you kindly alter the lower current limit in test 5. of the above (issued 5.4.30) to .80 amperes. This will allow for slight variations in the ballast resistance used and any slight alteration to the distributor make ratio. EFC/HEW. | ||