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).
Test report on a 25HP car fitted with a Double Zenith Carburetter.
| Identifier | WestWitteringFiles\U\2January1930-September1930\ Scan220 | |
| Date | 19th July 1930 | |
| SG.{Arthur F. Sidgreaves - MD} FROM R.{Sir Henry Royce} Copy to WOR.{Arthur Wormald - General Works Manager} Copy to HS.{Lord Ernest Hives - Chair} Copy to RY. 25HP. CAR WITH DOUBLE ZENITH CARBURETTER. I drove this car for some miles and was very impressed with the carburetter, which appeared to be quite as good as our usual expanding carburetter. This is the first time I have ever tried a fixed jet carburetter that could be considered satisfactory on a car. The increase in power at slow speeds was quite remarkable, and the vigour of the engine was so great as to almost become distressing. The car however was not in very good condition as regards springing and it was difficult to judge, and I could not blame the carburetter for any short-comings of the car or engine except its increased vigour, which should be a virtue, though giving the impression that the engine was coarse. R.{Sir Henry Royce} ORIGINAL X5080. Y1053. RECEIVED JUL. 22 1930 F H | ||