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).
Design of a new miniature sparking plug from K.L.G. and requesting feedback on its dimensions.
| Identifier | WestWitteringFiles\J\March1923\ Scan5 | |
| Date | 1st March 1923 | |
| E.{Mr Elliott - Chief Engineer} from Hs.{Lord Ernest Hives - Chair} ORIGINAL Hs{Lord Ernest Hives - Chair}3/LG5.3.23. MINIATURE SPARKING PLUGS. 4560 We have received a small sparking plug from the K.L.G. people. This plug appears to have better proportions than the Bosch. They have not tried to get down the length but have taken advantage of reducing the diameters and have arranged the hexagon so that it is far enough away from the threaded portion. This plug allows us to reduce the pocket in the cylinder head. We have suggested that the K.L.G. could be made a little shorter with advantage. We should like to have your criticisms as regards what you consider the correct dimensions for the Miniature Plug are. lig | ||