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).
Intake manifold designs, including a proposal and diagram for a corrugated hot spot.
| Identifier | ExFiles\Box 75\2\ scan0241 | |
| Date | 3rd August 1921 guessed | |
| Oy2 - G 2821 Sheet #3. which would be bad if cold because of feeding 1 and 6 with wet stuff, accumulating wet gas at the two ends, and feeding 3 and 4 weak from lack of wall-fuel, might be the very best thing with a hot spot because it is as short as possible. This type of manifold is in fact used almost universally on modern American engines with varying heights of vertical pipe A, and with a drainage slope from the ends to the centre. The hot spot is generally fitted on A or on A and over the Tee. In overhead valve sixes, the same form is used with downward pointing bends and no drainage slope. In the latest types, Premier Experimental (see February S.A.E. Journal) and the new Ansted engine on the Lexington, a corrugated hot spot is used at A with the idea of heating the liquid fuel as much as possible and the air as little as possible. (4) Corrugated Hot Spot: This type of corrugated hot spot would be a good thing to try, we think, on your tests. It could be close to the exhaust boxes and heated by interchange thus:- If placed on the bend there would be more tendency for the liquid fuel to be thrown into it. OY. M.{Mr Moon / Mr Moore} Olley | ||