The trial of an ignition coil impregnated with paraffin wax on experimental Goshawk cars.
| Identifier | ExFiles\Box 45\4\ Scan031 | |
| Date | 2nd October 1922 | |
| X. 4079a To RHC. {R. H. Coverley - Production Engineer} from EFC. {E. Fowler Clarke - Electrical Engineer} EFCl/T.2.10.22. X.4079- IGNITION COIL IMPREGNATED WITH PARAFFIN WAX We are handing you herewith an ignition coil, the performance of which has been improved by impregnating the windings with paraffin wax, and we would like you to have this fitted in a case for trial on the experimental Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) cars. The object of the experiment is to see whether paraffin wax impregnation leads to any difficulty as regards melting of the wax due to heat, the electrical performance of the coil being known to be improved by this method of insulation. EFC. {E. Fowler Clarke - Electrical Engineer} [Watermark: DICKINSON BOND] | ||
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).