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 discussing the features of the 36 D.U.P. carburetter model.
| Identifier | ExFiles\Box 122\1\ scan0110 | |
| Date | 26th May 1931 | |
| Y 1053. CARS DRIVEN BY OUR STAFF ARE AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. Telegrams: "ZENICARBUR, PHONE", LONDON Code: A.B.C. 5TH EDITION Telephones MUSEUM 9106-9. THE ZENITH CARBURETTER CO. LTD. 40-42. NEWMAN STREET, LONDON, W. 1. 26th May, 1931. Messrs. Rolls Royce Ltd., DERBY. Also at LYONS, PARIS, DETROIT, MICH, (U.S.A.) MILAN, THE HAGUE, TURIN. Dear Sirs, REFERENCE: Hs.{Lord Ernest Hives - Chair}/RM.{William Robotham - Chief Engineer}6/HT. In reply to your letter of the 20th, reference as above, with regard to the 36 D.U.P. carburetter, it is quite true that there should only be one starting jet and one starting valve. The valve and jet should both be on the same side of the carburetter, and supply extra petrol to both of the slow running jets. In the same way there is only one air adjustment on the slow running jet, and this is by means of the knurled screw situated between the throttle barrels on the back side of the carburetter. This regulates the air supply to both slow running jets. You will find that there are 2 slow running jets, one for each barrel. We are sorry that we have no diagramatic sketch of [Stamp 1: THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS LTD RECEIVED 27 MAY 1931] [Stamp 2: THE MOTOR TRADE ASSOCIATION] | ||