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).
Letter to A.C.-Sphinx Sparking Plug Co. regarding speedometer testing and issues with Sinterkorund spark plugs.
| Identifier | ExFiles\Box 165\2\ img075 | |
| Date | 29th April 1937 | |
| 6011 29th April 1937 Rm{William Robotham - Chief Engineer}/Wst.19/AP. N.F.Stockbridge Esq., A.C.-Sphinx Sparking Plug Co.Ltd., DUNSTABLE, Beds. Dear Mr.Stockbridge, Replying to your letter of the 28th. inst., we should like you to hang fire on the R.R. speedometer until we have done some further testing with the two Bentley instruments. Regarding Sinterkorund plugs, these are quite satisfactory with the exception of the electrodes which, as previously reported to you, are unsatisfactory and require modification, and we do not think any useful purpose will be served in us proceeding any further with these plugs until the electrode design is clarified. We are arranging for a separate reply to be sent to you regarding the vane type fuel pump. Yours sincerely, | ||