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).
Testing a new worm and wheel adjustment for throttle edge carburation on a 22-EX Car.
| Identifier | ExFiles\Box 13\4\ 04-page192 | |
| Date | 17th January 1934 | |
| Hs{Lord Ernest Hives - Chair}: Hs{Lord Ernest Hives - Chair}/Wym.{G. Harold Whyman - Experimental Manager}2/KW17.1.34. P.II. Throttle Edge Carburation. We have now tested out on 22-EX Car, the new type of worm and wheel adjustment for operating the slow running plug, to details BY/CS.1/EH.17.7.33, and consider it an improvement upon the present standard method. The present method of adjustment has never been entirely satisfactory, because of the ease with which the setting can be altered unwittingly by anyone cleaning down the engine, and also the tendency to air leaks. The new scheme is sealed against air leaks, and better slow running has been obtained, but we have had to reduce the SLOW speed jet size from .031" to .025" to obtain a decent range of adjustment. We recommend this scheme together with the reduced SLOW speed jet size for production, as soon as possible. Hs{Lord Ernest Hives - Chair}/G.H.Whyman. | ||