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).
Testing and construction of ignition coils using paraffin wax paper insulation.
| Identifier | ExFiles\Box 69\1\ scan0126 | |
| Date | 11th July 1928 | |
| X8710 To EY. from EFC. c. BY/RD. EFC3/T11.7.28. IGNITION COILS WITH SECONDARY INSULATION CONSISTING OF PARAFFIN WAX PAPER IN PLACE OF OILED PAPER. Two of these coils, both of the finer primary type, were produced for us for test. These are giving satisfactory and promising results generally. In view, however, of the fact that we are changing back again to the coarser primary coil, we think we should have two coils made up in this manner with the coarser primary winding. Perhaps you will kindly instruct. We have a number of cores and coil cases by us, two sets of which can be utilised for the purpose. EFC. | ||