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 produce four small ignition condensers for experiments with specific dimensions.
| Identifier | ExFiles\Box 34\1\ Scan033 | |
| Date | 12th December 1918 | |
| To Mr. Coverley. From EFC. X.2512. EFC8/T12.12.18. X.2512 RE CONDENSERS FOR IGNITION EXPERIMENTS. X 3199 X 3129 Will you kindly have made up with all possible speed, four more small ignition condensers similar to those already made. These new condensers should be made of the good quality thinner mica of which we have already had two made, one of which appears now to be lost. We cannot specify the number of leaves but we can specify the condensers by their thickness when built up. We would like the condensers to be according to the following table:- No. Depth. Remarks. 8 .500" Suitable for insertion into the condenser box of the aero ignition. 9 .750" Ditto. 10 .750" Suitable for attachment to the R.R. chassis ignition in the same manner as the one fitted to 7-CA. 11 1.00" Ditto. EFC. | ||