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).
Request to re-wind two ignition coils with a modified specification for the secondary winding.
| Identifier | ExFiles\Box 164\5\ img270 | |
| Date | 25th March 1937 | |
| 6017 HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Wst. c. Wst/RS.{Sir Henry Royce's Secretary} Rm{William Robotham - Chief Engineer}/Wst.12/AP.25.3.37. Will you please arrange to re-wind for us two ignition coils to drawing D.75672 with the exception that the secondary winding should consist of 15,000 turns of 42.SWG. wire. Rm{William Robotham - Chief Engineer}/Wst. | ||