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 from Zenith Carburetter Co Ltd regarding comparative airflow tests on carburetter components for the Phantom III engine.
| Identifier | ExFiles\Box 122\3\ scan0070 | |
| Date | 9th August 1938 | |
| The ZENITH CARBURETTER·CO·LTD HONEYPOT LANE, STANMORE, MIDDLESEX ADJOINING QUEENSBURY UNDERGROUND STATION CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS OWN RISK AND RESPONSIBILITY TELEGRAMS: ZENICARBUR, PHONE, LONDON. CODE: A.{Mr Adams} B. C. 5TH EDITION. ALSO AT LYONS, PARIS, DETROIT, TURIN, BERLIN. TELEPHONE: WORDSWORTH 2213. [Handwritten notes:] The RA FILE [RA is crossed out] R H/Scope [Crossed out] R H/CTS{C. Trot Salt - Carburation} [Crossed out] 9th August 1938. [Signature and Reference:] Rm{William Robotham - Chief Engineer} 1033 . W. A.{Mr Adams} Robotham Esq., Messrs. Rolls-Royce Ltd, DERBY Dear Mr. Robotham, We have now made some comparative tests for air flow between the A.A.V-2 carburetter and the E.E.C. We have also flowed separately the die cast portion and the barrel of the A.A.V carburetter and we think it will pass sufficient air to feed the P.III Engine, provided a larger throttle barrel is used. Therefore, I am getting a pattern made of a 42 m/m barrel to fit on to the die cast body of the A.A.V as I think that probably with this barrel we shall obtain sufficient flow for the P.III Engine. If that is so, we could use the same die cast portion for both engines and only change the throttle barrels. It will be a week or so before I can get the new barrel portion made up and flowed, but I thought I would let you know that we are losing no time on these tests. ..... | ||