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).
Gap size variation for Lodge Racing Sparking Plugs and agreeing to experimental results.
| Identifier | ExFiles\Box 79\1\ scan0083 | |
| Date | 9th January 1917 | |
| Nov 'c'. to EH. X 601 EP{G. Eric Platford - Chief Quality Engineer}/T16/F10117. Re Lodge Sparking Plugs. ------------ Replying to your memo BY12/G3117, you will see from the previous correspondence that although I agreed that Lodge Racing Plugs ordered for our engines would be satisfactory with .015" gap, as soon as the Lodge Co. informed us that the variation would be on the low side, and that the gaps would be between .015" and .010" I protested against this. I am prepared, however, to agree to what Mr. Hives settles from experiment as being satisfactory. EP.{G. Eric Platford - Chief Quality Engineer} [Stamp] RECEIVED 9 JAN 1917 W O R [Footer, upside down] R.R. 235 B (200 T) (S.C. 536. 16-2-16) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 1847. | ||