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).
The supply and use of new K.L.G. spark plugs for chassis X.1918.
| Identifier | ExFiles\Box 183\M22\ img038 | |
| Date | 14th May 1919 | |
| 7 CA - R/c CAR BEFORE 1 EX To R.{Sir Henry Royce} from EH. c. to CJ. c. to Ch. c. to E.{Mr Elliott - Chief Engineer} c. to BY.{R.W. Bailey - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} ORIGINAL. EH2/LG14.5.19. 14th. May 1919. RE SPARKING PLUGS FOR CHASSIS. X.1918 We are sending to you 12 K.L.G. plugs. These are the plugs we recommend for use on our chassis. We should like you to run them on 7-CA. With these plugs will be supplied a special tool for cleaning. This is used in the following manner:- The Plug is held with the sparking points upwards - the Cleaner is then placed over the Central Electrode and pushed right home, it is then gently rotated a few times. This will then have the effect of removing any carbon deposit which may have accumulated on the insulation. You will notice also that these plugs are fitted with a simple spring wire terminal. We have found this very successful. It is impossible for this type of terminal to come off when running. In the past we have had difficulty with the screw terminal because in order to keep them tight they have been screwed up with pliers which frequently injures the plug. EH. | ||