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).
Fitting of experimental two-carburetter down-draught induction pipes to a Phantom III engine.
| Identifier | ExFiles\Box 93\2\ scan0092 | |
| Date | 28th September 1935 | |
| SECRET x308 E/PSN.1/MN.28.9.35. To BY.{R.W. Bailey - Chief Engineer} (BY is crossed out) Copy to RHO. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} (RHO is crossed out) URGENT. Phantom III. Two Carburetter Down Draught Induction System. We send you herewith LeC.4719 of experimental four port down draught induction pipes to fit on to the existing cylinder heads for the above engine. As shown these pipes can be fitted with two separate down draught carburetters but they are also suitable for use with the Duplex Carburetter with the modified throttle body to LeC 4722, which has already been instructed. It will be necessary to blank off part of that half of the induction pipe which is carried in the cylinder head, as shown. The mixing chambers are water heated and connections will have to be rigged up for taking the water from the top water rail into the jackets and out from the jackets to the suction side of the pump. We should be pleased if you would send a print of this LeC to Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer} in addition to the usual prints. E/PSN. Att: LeC.4719. | ||