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).
Design, materials, and standardisation of the Goshawk ignition coil.
| Identifier | ExFiles\Box 45\4\ Scan130 | |
| Date | 6th January 1923 | |
| X4079 c TO HPG. FROM E.{Mr Elliott - Chief Engineer} c. to OJ. c. to HS.{Lord Ernest Hives - Chair} c. to HY.{Tom Haldenby - Plant Engineer} E1/M6.1.23. X.4079 - RE GOSHAWK IGNITION COIL. RECEIVED Referring to the above, and the drawing Lec 1653, when this design was made we understood you were able to make a coil with practically the standard winding, and no air space in the standard case. However it is agreed that we should await the results of the tests with coils of larger diameter and greater length which it is anticipated will shortly be known, before proceeding with the coil case of the old diameter to Lec 1653. We ought to know as soon as possible with regard to this point as I believe some of the production material has been held up in anticipation of the standardisation of the new coil position. Referring to the material of the case, you are quite correct in your deduction that this was intended to be bakelite. E.{Mr Elliott - Chief Engineer} | ||