Request to produce two ignition coils with reversed polarity for the Phantom III.
| Identifier | ExFiles\Box 164\5\ img256 | |
| Date | 5th November 1936 | |
| 6017. To [text struck through] c. [text struck through] c. Rm {William Robotham - Chief Engineer} /Wst. BY {R.W. Bailey - Chief Engineer} /RD.3/B.5.11.36. "Phantom III" : Ignition Coil. Reversed Polarity. Will you please put in hand two ignition coils to L.O.P. D.75776. These coils consist of all standard parts, but the connections of the windings are so arranged to give reversed polarity at the sparking plug. Blue prints attached herewith :- D.75773 - Insulating Flange. D.75774 - Section of Winding. D.75775 - Piece No: Tab. D.75776 - L.O.P. BY {R.W. Bailey - Chief Engineer} /RD. | ||
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).