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).
List of modifications and points to be addressed for the Phantom III Carburetter.
| Identifier | ExFiles\Box 93\2\ scan0139 | |
| Date | 20th February 1936 | |
| x308 SWDL{Len H. Swindell} BT.{Capt. J. S. Burt - Engineer} C. Hs.{Lord Ernest Hives - Chair} Sft.{Mr Swift} Ba.By/Co. Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell} P/Rens E.10/HP.20.2.36. Phantom III Carburetter. We have now examined the model carburetter, and as soon as Brock has made a modification to increase the angular travel of the throttle he will pass the carburetter on to HS{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell} for test. In the meantime there are some small modifications required to bring the details into line in certain cases with our requirements, and to cover certain points which have arisen on test, a list of which is as follows:- We have been over these points with By/CS in detail:- (1) The gauge of the throttle lever to be increased to .104 as shown on Lec.4933, and the throttle spindle to be altered to suit, so as to have the maximum amount of flat in engagement. (2) We are milling .075" off the top face of the throttle lever stop boss to enable the throttle to open fully. Details should be modified to cater for 85° throttle travel as called for. (3) The shape of cam for fast idle control will have to be modified. We are setting this out so as to give a more even action of the choke control. (4) On the model carburetter the cam does not come within the middle of the roller, but is right on one edge. Details should be checked over to bring this right. (5) The end of positive pickup arm on the throttle operating arm choke lever must be made longer to fully engage choke valve arm. (6) A note should be added to the detail drawing to remove all burrs on the sawcuts in the accelerator pump lever pivot. (7) We have had experiments made to determine whether the flood connection to the top of the floatchamber lid{A. J. Lidsey} is adequate for the worst conditions. We now find we shall have to increase this connection to a banjo suitable for | ||