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).
Modified, less expensive Goshawk ignition coil design using mouldensite insulation.
| Identifier | ExFiles\Box 45\4\ Scan139 | |
| Date | 29th January 1923 | |
| To EFC. from R.{Sir Henry Royce} c. to CJ. Wor.{Arthur Wormald - General Works Manager} c. to PN.{Mr Northey} BY.{R.W. Bailey - Chief Engineer} c. to EP.{G. Eric Platford - Chief Quality Engineer} Hs.{Lord Ernest Hives - Chair} XH079 RS{Sir Henry Royce's Secretary}/M29.1.23. GOSHAWK IGNITION COIL. XH079 X4575 With reference to your EFCl/T23123 I think you have done exceedingly well with this coil, to enable us to use mouldensite insulation. I think the ½" longer is a very excellent way of meeting the original difficulty. Apparently a coil built in this form will be less expensive for both material and labout, and as it promises to work quite satisfactorily, I think as soon as you have proved these conclusions, we had better go ahead with this combination, making the coils in the form most suitable for the wheelcase position, with this addition of ½" in length. R.{Sir Henry Royce} | ||