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 The S.U. Company regarding tests on an experimental pump and carburetter modifications.
| Identifier | ExFiles\Box 149\1\ scan0282 | |
| Date | 21th August 1936 | |
| S.U. CARBURETTER FLEXIBLE SILENT STATION: ADDERLEY PARK, L.M.& S. RLY THE S.U. COMPANY. PROPRIETORS: MORRIS INDUSTRIES LTD THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS TELEPHONE No. EAST 1171 (6 LINES) East Works, Bordesley Green Road, Adderley Park-Birmingham, 8. TELEGRAMS: FLEXCARBUR, BIRMINGHAM. HS{Lord Ernest Hives - Chair}/JBD.{John B. Dixon - Fuel Systems}16/JH. Your Ref. RLK/NK. Our Ref. General Manager: T. C. SKINNER. 21st August 1936. Messrs. Rolls-Royce Limited. D E R B Y. Dear Sirs, We are in receipt of your letter of the 20th inst. It was rather unfortunate that you were unable to complete your tests on the experimental pump submitted to you earlier, as your approval of this was only received immediately before the holidays, and we closed down for a fortnight, with the result that not much progress has been made so far. We shall however, do our best to get you through some further pumps as soon as we can. Mr. Skinner has mentioned to the writer the suggestion for having a buffer. The difficulty of this is one which is often experienced with similar things. We have had the same difficulty on the carburetter. When flexible mountings first came in, we found it advisable to have a buffer to stop the piston in the carburetter chattering, and we tried to fit a cork ring under the suction disc which would silence the piston down. At the same time, it was essential to hold the clearance under the piston to very close limits and we found in practice that this was impossible. On the pump we consider it desirable to arrange for the armature to be able to move in until it is within 5 thou. of the end of the bore and it is very difficult to arrange a flexible buffer which will act as a stop and prevent the armature and cork coming into contact, and at the same time allow absolutely free movement up to within 5 thou. THE ENGINEERING AND ALLIED EMPLOYERS' NATIONAL FEDERATION 1896 -1- | ||