Cracked K.L.G. E.27 sparking plug after 8,000 miles.
| Identifier | ExFiles\Box 83\1\ scan0437 | |
| Date | 6th April 1937 | |
| 200a. HOTEL DE FRANCE. CHATEAUROUX(French test region). Indre. France. Rm {William Robotham - Chief Engineer} /GWH {George W. Hancock - Head Chateauroux} /IMW {Ivan M. Waller - Head of Chateauroux} /6/JAB. 6th April 1937. To. Rm. {William Robotham - Chief Engineer} c.c. Rm {William Robotham - Chief Engineer} /GWH. {George W. Hancock - Head Chateauroux} 6. B. IV. K.L.G. E.27 SPARKING PLUGS. The insulator of N° 6 sparking plug has cracked away round the central electrode. We are returning it to you for examination. It has run 8.000 miles. The gaps of these plugs have opened at the rate of approximately .010" per 5.000 miles, and have been re-set once since fitting. ---------- Rm {William Robotham - Chief Engineer} /GWH {George W. Hancock - Head Chateauroux} /IMW. {Ivan M. Waller - Head of Chateauroux} | ||
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).