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).
Comparing downdraught and standard carburettors and discussing power curve improvements via better distribution.
| Identifier | Morton\M19\ img123 | |
| Date | 26th February 1931 | |
| - 2 - Appended is a power curve comparing the Downdraught and std. carb. We think the power may be improved when we get better distribution. In looking at these power curves it must be remembered that they were taken on a 5/1 compn. ratio head with open exhausts. At the moment we are concentrating on distribution because we do not think it advisable to work on metering and other characteristics until good distribution is obtained. On this carburetter scheme there is no provision for a hot spot or any form of induction heating. Even with the best distribution we know we cannot operate satisfactorily without some form of hot spot. We should like a scheme incorporating a hot spot similar to that used on the twin carburetter. We next propose to try out the reduced throttle Also look into the question of fitting up a temporary scheme for the slot or weir type of induction manifold. Hs{Lord Ernest Hives - Chair}/Lov.{Mr Lovesey} Print attached. | ||