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).
The design of the Goshawk ignition coil, awaiting test results for a new larger version before proceeding.
| Identifier | WestWitteringFiles\J\January1923\ Scan50 | |
| Date | 6th January 1923 | |
| R.R. 235A (100 T) (S.H. 159 11-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2800 TO EFC. FROM E.{Mr Elliott - Chief Engineer} c. to CJ. c. to HS{Lord Ernest Hives - Chair} c. to HY{Tom Haldenby - Plant Engineer} ORIGINAL, E1/M6.1.23. X.4079 - RE GOSHAWK IGNITION COIL. 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 .1 air space in the standard case. How-ever 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} [STAMP: RECEIVED 8 JAN 1923] | ||