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 to The S.U. Company regarding carburation tests and needle design for a 3.6 litre Bentley.
| Identifier | ExFiles\Box 31\5\ Scan077 | |
| Date | 20th July 1933 | |
| X481 Experimental Dept. HS{Lord Ernest Hives - Chair}/CTS.{C. Trot Salt - Carburation}12/KT. July 20th 1933. The S.U. Company, East Works, Bordesley Green Road, Adderley Park, B'ham. For the attention of Mr. Van de Becke. Dear Sir, With reference to carburation tests we are carrying out, with a view to standardising a needle for our 3.6 litre Bentley. We find that with the intake bend fitted, and a complete air silencer, a much weaker mixture setting can be used on the road. A comparison between the 'R.R' needle and a No.3. shews that the latter is most suitable at high speeds. At low speeds however, this needle is too weak, as would be expected. We send you herewith measurements for a needle we would like to try, if you would be kind enough to produce say three pairs for our further tests. Yours faithfully, Attached dimensions. FOR ROLLS-ROYCE LIMITED. | ||