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).
Letter discussing engine spark plug endurance testing and a planned visit.
| Identifier | ExFiles\Box 79\1\ scan0131 | |
| Date | 1st September 1918 | |
| Contd. -2- EH2/LG6.9.18. ---------- air, then the copper electrodes would stand up because of them not getting so hot. If we could get a plug which would run our engines on the bench and be suitable for work in the air, these plugs would only have to run the standard 24 hours endurance test; they would then be sent away on an engine. As regards your visit to Derby, if you will let us know 3 or 4 days before you wish to come over, we will endeavour to have an engine ready. Yours faithfully, R.R. 235a (500 T.) (S.D. 408. 26-4-17.) Bm. 2/156/13. | ||