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 Lodge Plugs Ltd. regarding Merlin Engine sparking plugs, discussing the X465 S/3 model.
| Identifier | ExFiles\Box 162\6\ img326 | |
| Date | 27th June 1936 | |
| From Lodge Plugs Ltd. Sheet No 2. To Messrs. Rolls-Royce Ltd. Date 27.6.36. (d) Merlin Engine Sparking Plugs. We have carefully considered Mr. West's suggestion of making the X465 S/3. plug in a two-piece construction. In our opinion this is not a practicable proposition, for reasons which we explained to Mr. West on the telephone to-day. We consider that the X465 S/3. is the best mica detachable plug which we can submit to you for your Merlin engine, and we suggest that you continue your tests on the 24 plugs of this type, which we understand have run satisfactorily up to 35 hours. We think that the discussion as to the future type of plug for the Merlin engine should be left over until you have had the opportunity of completing your test on these plugs, and if you will kindly advise us when these tests are finished we will arrange to come over and discuss the whole situation. Yours faithfully, LODGE PLUGS LIMITED. [Signature: Bernard Hopps] DIRECTOR. | ||