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).
Experimental ignition coil with the primary wound on the outside.
| Identifier | ExFiles\Box 69\1\ scan0111 | |
| Date | 22th June 1928 | |
| V8710 To EFC. BY/RD5/ML22.6.28. IGNITION COILS. Herewith print of "D" Sch. 266 shewing the coil with the primary wound on the outside, we have used in as much production material as possible and this scheme does not represent what we should finally propose, it has only been done as a pure experiment to gather some date on the behaviour of this type of coil, it does however, pass the production test as it stands. This coil should not be fitted to a chassis or any metal plate connected to the remainder of the circuit. BY/RD. | ||