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 performance of an improved miniature sparking plug and a request for adapters.
| Identifier | WestWitteringFiles\J\May1923\ Scan6 | |
| Date | 9th May 1923 | |
| TO HS.{Lord Ernest Hives - Chair} FROM E.{Mr Elliott - Chief Engineer} ORIGINAL. E2/M9.5.23. RE. MINIATURE SPARKING PLUGS. X4560 The improved model of the above, one set of which you sent to WW., has done very well indeed, having kept perfectly clean all the time. The insulator has the characteristic reddish covering from which we usually infer that the plug has been subjected to oil. We have never received the two adapters you promised us for running miniature plugs in standard holes. E.{Mr Elliott - Chief Engineer} | ||