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).
Recommendations from a conference on carburetter design and modifications.
| Identifier | ExFiles\Box 42\3\ Scan092 | |
| Date | 1st February 1927 | |
| 8870 To R.{Sir Henry Royce} from E.{Mr Elliott - Chief Engineer} c. to BJ. RG.{Mr Rowledge} Hs.{Lord Ernest Hives - Chair} c. to 43841 E3/115. 2.27. F.10. CARBURETTER. X.3933 X.3932 X.3841 The following are the recommendations of a conference at which RG.{Mr Rowledge} Hs.{Lord Ernest Hives - Chair} DA.{Bernard Day - Chassis Design} E.{Mr Elliott - Chief Engineer} and Mr. Lovesey attended on the carburetter question made before the receipt of your telegram. (I was at the Works Friday and Sat. 11th. and 12th. inst. but did not see your telegram until Mon. at WW.) (1) FEED TO MAIN JETS. It was thought desirable to alter the float chambers so that the feed to the main jets was central and occurred through the agency of a port or passage-way opening into the middle of the float chamber floor. This would ensure that the main jets of both fore and aft carbs. would not be starved at the moment of a machine being catapulted. It was admitted that for climbing at the max: angle of about 15° or even for zooming at 45° the design as at present would still feed; nevertheless it was thought manifestly desirable that the fore and aft carbs. should be made as alike as possible in respect to this point. (2) ALTITUDE CONTROL BALL VALVE. It was agreed that the altitude control passage-way to the floatchamber should be provided with a ball valve. This should be a fairly simple matter. (3) THROTTLE VALVE STOPS. It is recommended that stops are provided for the open position of throttle as on the Curtiss. These are useful for setting the position of the throttle to correct the distribution at full power. (4) POSITION OF CARBS: It is recommended that the carbs. be not moved from their present position. The present induction pipes are giving very good distribution and if it were desired to improve them at all the tendency would be to move the carbs. nearer together rather than further apart. (5) AIR INLET DRAIN. A drain is required on both ends of the air inlet contd :- | ||