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 for engine component design and a proposal for a supercharged 6-cylinder engine for the next Bentley car.
| Identifier | ExFiles\Box 140\1\ scan0193 | |
| Date | 30th October 1935 | |
| -4- HS{Lord Ernest Hives - Chair}/Smth.20/KW.30.10.35. Our recommendations are :- (1) The floor of the volute and the intermediate pipe should drain all the way to the manifold, leaving no places where pools of petrol can collect. (2) There should be a capacity chamber at the Tee joint in the manifold, with a heated floor. A collecting trough as on Hs.{Lord Ernest Hives - Chair}2211 should be incorporated. *(3) The intermediate pipe should be as long as possible and should be heated. (4) A scheme for heating the rotor casing at very small throttle openings only is desirable. (5) The Graham type of oil thrower and air seal at the top gland is very satisfactory. Future of the Supercharged Engine. We think that a supercharged 3.500 bore 6-cyl. engine becomes a strong candidate for the next Bentley car. Its merits are :- (1) It is much more compact than a straight eight and would be cheaper than a V-12. (2) The engine itself is one we are already making. (3) The slow running ought to be at least as good as for a ramp headed engine. (4) The supercharger drive should be no more difficult to develop than the o.h.c. drive we propose to use on the 6-cylinder. (5) We can get such an engine designed and made very much more quickly than any other type. A large portion of the design work has already been done. | ||