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).
Pre-ignition trouble with K.L.G. (Type K1) sparking plugs on 40/50 HP chassis and Coshawk engines.
| Identifier | ExFiles\Box 58\3\ Scan049 | |
| Date | 19th August 1922 | |
| EP.{G. Eric Platford - Chief Quality Engineer} from Hs.{Lord Ernest Hives - Chair} HM.{Capt. W. Hallam - Head Repairs} from Hs.{Lord Ernest Hives - Chair} c. to BY.{R.W. Bailey - Chief Engineer} X1918 l. Hs{Lord Ernest Hives - Chair}2/LG19.8.22. K.L.G. SPARKING PLUGS - (Type K1) X.1918. With reference to the above plugs which are being tried on 40/50 HP. chassis. You should make a special point of noticing whether there is any trouble from pre-ignition. Although these plugs have been run successfully on all the Coshawk engines, on a recent test with the 40/50 on Brooklands, we had trouble with these plugs pre-igniting both on the 40/50 HP. and the Coshawk. Hs{Lord Ernest Hives - Chair}, | ||