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).
Performance of different ignition plugs, comparing them to the Bosch type and suggesting tests on Lodge 'Mica' type plugs.
| Identifier | ExFiles\Box 79\1\ scan0056 | |
| Date | 25th March 1915 guessed | |
| - 2 - later plugs seem somewhat of an improvement but do not compare favourably as yet with the Bosch type of plug. I think, therefore, that we should still experiment with ignition plugs and try to obtain one which will overcome these troubles. It is a fact that we have obtained very good results with the air cooled "Mica" type Lodge plugs used on the Renault engines, with which we have so far had no failures. I suggest that a set of these plugs or similar type as made for car engines, should be tested on an experimental car. EP.{G. Eric Platford - Chief Quality Engineer} | ||