Experimental Stalloy core to improve the high-speed performance of the Spectre ignition coil D.74200.
| Identifier | ExFiles\Box 164\5\ img220 | |
| Date | 8th March 1935 | |
| By. {R.W. Bailey - Chief Engineer} From Hs {Lord Ernest Hives - Chair} /Wst. 16017 Hs {Lord Ernest Hives - Chair} /Wst.4/MA.8.3.35. SPECTRECodename for Phantom III IGNITION COIL D.74200. We consider that the high speed performance of this coil could be improved if an iron core of Stalloy plates was substituted for the present Swedish iron wires. Will you therefore please arrange for an experimental Stalloy core to be instructed for trial. Hs {Lord Ernest Hives - Chair} /Wst. | ||
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).