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 K.L.G. Sparking Plugs Ltd. regarding issues with LKS.6 plugs showing pre-ignition during engine testing.
| Identifier | ExFiles\Box 58\3\ Scan165 | |
| Date | 21th November 1932 | |
| r 1918.e Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} 13/AD. November 21st, 1932. The K.L.G. Sparking Plugs Ltd. Robinhood Engineering Works, Putney Vale, London, S.W.15. Dear Sirs, We have now had an extended run on the Continent on your LKS.6 plugs. These have been running in a straight engine of 6/1 compression ratio. We find definitely that they are not hot enough for the job and are returning two to you that show obvious signs of pre-ignition. We do not want to go to the L.583 plug on standard engine and we should therefore be glad if you could submit something to us of an intermediate variety. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||