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).
Technical memorandum detailing the requirements and outstanding points for the Bentley III induction system.
| Identifier | ExFiles\Box 99\1\ scan0003 | |
| Date | 7th March 1938 | |
| 8 To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} 200b Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}6/MH.{M. Huckerby}7.3.38. 408 BENTLEY III. INDUCTION SYSTEM. We have reached a stage in our development where we can say what is required for the above section. Induction pipe. As designed with modifications as follows :- (a) Plate restriction with .500 dia. hole instead of the venturi. (b) Flanges to suit the H.4 type S.U.carburetters. (c) Air bend flanges to suit H.4 type carbs. It should be noted that the only petrol drains required are (1) From the top of the floatchambers. (2) From the air bend as at present. We are going ahead with tests on the automatic starting device, so that a decision can be made as to whether this is a practicable and acceptable feature. If is is accepted, mixture controls are completely deleted. The S.U. Company have supplied carburetters with a given finish, at a certain price. Slight variations in this question of finish will crop up, and it is how up to By.{R.W. Bailey - Chief Engineer} and Rm.{William Robotham - Chief Engineer} to say just where these are to take place, before a final price can be settled. The two points to be settled therefore are (a) Final finish. (b) Whether we have autostart or mixture controls. Cont'd.{John DeLooze - Company Secretary} | ||