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. Carburetter Co. Ltd. discussing needle dimensions and adjustments for cold conditions.
| Identifier | ExFiles\Box 121\4\ scan0218 | |
| Date | 8th October 1938 | |
| THE S.U. CARBURETTER CO. LTD. CONTINUATION No. 2 BC/ER Messrs. Rolls-Royce Ltd., 8th October 1938. Regarding the needle with a small third dimension for getting away from cold under severe conditions, we will send these along on Monday - marked RRX. The very small third dimension will probably be reflected in the general consumption figure. Probably a better method would be to richen up on the thermo carburetter by increasing the spring strength, or needle travel to 3/8"; this would leave the main jet setting more normal on the initial pick up, when warm. Yours faithfully, For THE S.U.CARBURETTER CO.LTD. B. Cooper | ||