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 from AC-Sphinx Sparking Plug Co. Ltd. regarding a fractured plug and testing of other X399 plugs.
| Identifier | ExFiles\Box 163\5\ img069 | |
| Date | 2nd October 1936 guessed | |
| THE AC-SPHINX SPARKING PLUG CO., LTD. CONTINUATION SHEET No. 2. seating (it is difficult to say as to the cause of this fracture, but I am inclined to suspect mechanical break while the plug was being assembled here or while it was being screwed into the engine). The plugs are being cleaned, reassembled and reset, and we shall probably be able to get them off to you tomorrow. With regard to the other fourteen X399 plugs which you have, I shall await with considerable interest your report on the set that you are putting in one of your test cars, as well as on the set which you sent to one of your Bentley customers in London. Yours faithfully, N. F.{Mr Friese} STOCKBRIDGE, Managing Director. [Sticker Text] MOTOR EXHIBITION CARS & BOATS OCT 15-24 OLYMPIA OUR STAND No. 419 GALLERY | ||