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).
Spark plug gaps, misfiring issues, and the potential impact of tungsten contact points.
| Identifier | ExFiles\Box 60\3\ Scan151 | |
| Date | 8th April 1932 | |
| -2- HS{Lord Ernest Hives - Chair}/Wst.7/HA.8.4.32.cont'd.{John DeLooze - Company Secretary} Whilst we agree that with smaller plug gaps the H.T. electric stresses are less we do feel that a plug gap below .020" will increase spark point erosion and make the plug gap setting more critical in customers hands. We are a little puzzled at the misfiring on 20.G.IV., and we will overhaul what we have done with a view to ascertaining if there can be any other possible cause of misfiring. One thing we might mention is that the tungsten contact points have been known to cause irregular firing after long use and we wonder if Dodd has cleaned these from any oxide? HS{Lord Ernest Hives - Chair}/Wst. | ||