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 trial of different sparking plugs on a Phantom III and a Bentley 4 1/4 litre trials car.
| Identifier | ExFiles\Box 162\3\ img021 | |
| Date | 30th September 1936 | |
| To C. c.c. to JLE.{J. Lee Evans - Chassis Test Manager} c.c. to LA.{L. A. Archer} 16001 Re Phantom III & Bentley Trials car. We should like to try out different type sparking plugs on the above chassis, and we should be glad if you will arrange to have fitted to chassis 34-EX and one of the Bentley 4 1/4 litre trials car, 12, Lodge X546 and 6, AC type X399 sparking plugs. These plugs are being tried out with a view to ascertaining if there is any improvement in respect to immunity from misfiring when Ethyl petrol is used. The lodge plugs are to be fitted to the Phantom III, and the AC to the Bentley. Hs{Lord Ernest Hives - Chair}/Wst. | ||