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).
Examination report on the performance and condition of K.L.G. sparking plugs after testing.
| Identifier | ExFiles\Box 162\5\ img025 | |
| Date | 2nd July 1937 | |
| To Rm.{William Robotham - Chief Engineer} c. to Rm{William Robotham - Chief Engineer}/Wst. c.to RM{William Robotham - Chief Engineer}/RD. 6001. Rm{William Robotham - Chief Engineer}/WB.{Mr Brazier/Mr Bell}18/JH.2.7.37. K.L.G. Sparking Plugs. We have examined the six special plugs K.L.G.FE.30XC. They have completed 2900 miles in 36-EX, three in an inlet position and three in an exhaust. These plugs were fitted with a special central electrode which it was hoped would cure the trouble previously experienced i.e. opening up of the spark gap. We tried the car before taking out the plugs and there was a misfire on A distributor (exhaust plugs). This was cured by fitting standard plugs at .020". The spark gaps varied from .035" to .045" while one of the plugs had cracked insulation. The plugs have been returned to Wst. for his inspection and report. We have also replaced the K.L.G.E.27 in 1.B.IV with a new set of FLB.30X. The E.27 have run 3951 miles. The central electrode and earth of one of the plugs had almost burnt away while the others are in a fair condition. The gaps vary from .030" to .035". Rm{William Robotham - Chief Engineer}/WB.{Mr Brazier/Mr Bell} | ||