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 testing and performance of various K.L.G. sparking plugs.
| Identifier | ExFiles\Box 162\5\ img047 | |
| Date | 10th September 1937 | |
| 6001. TO Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/W.Brazier. c. Rm{William Robotham - Chief Engineer}/RC.{R. Childs} c. Rm{William Robotham - Chief Engineer}/HD.{Mr Hayward/Mr Huddy} 10.9.37 K.L.G. SPARKING PLUGS 3.B.1V. We have tested the following types of plug in FLB.30.X.standard. FLB.30.X.C. fitted with copper sleeve on electrode otherwise standard. FLB.30.X.P. fitted with double platinum earth, other - wise standard. FL.30.X. shorter barrel than standard otherwise the same. All the above plugs gave satisfactory performances, slow running 6 M.P.H. (it was found necessary to open up the tappet clearances). No misfires on pick-up, top speed of 90 MPH., no firing after switching off engine. The FLB.30.X.C. and FLB.30.X.P. were supplied by K.L.G. in the hope they would cure the burning of the earth previously experienced. They are now fitted to cars and a record being kept of the mileage. The FL.30.X. have a shorter barrel, making them easier to manufacture. They are more difficult to fit than standard, the hexagon being very close to the cylinder head. This can be done, however, with a standard spanner. Rm{William Robotham - Chief Engineer}/W.Brazier. | ||