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).
Blueprint showing the arrangement of two Zenith carburettors on the 20 HP engine.
| Identifier | WestWitteringFiles\Q\2April1927-June1927\ 14 | |
| Date | 2nd June 1927 guessed | |
| 6 SHORT EXH PIPES. EXH PORTS INLET MANIFOLDS FLANGES FOR THE TWO ZENITH CARBS. HORIZONTAL ZENITH TRIPLE DIFFUSER CARB ARRANGEMENT OF THE TWO ZENITH CARBURETTERS ON THE 20.H.P. | ||