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).
Proposed induction system for the Condor engine based on Mr. Royce's instructions.
| Identifier | ExFiles\Box 37\4\ scan 173 | |
| Date | 22th February 1918 | |
| To EFC. from E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} c. to Ey. X.3049. COPY 22nd. February 1918. E1/G22218. X.1863 X.2498. X.3049 RE "CONDOR" ENGINE - INDUCTION SYSTEM. In accordance with Mr. Royce's instructions, I send you herewith drawing Lec.904 - proposed induction system for Condor engine. It is Mr. Royce's idea that you should get an experimental set of pipes for the Eagle engine on these lines in hand against Mr.Hives' return to Derby. The system described is as follows:- There are four three-cylinder induction pipe mani-folds in between the "V" of the engine. The peculiarity in regard to these manifolds is that they look upwards into the cylinders. This will prevent individual drainage of petrol to the cylinders. We understand from Mr. Hives that there are two such manifolds in existence, which will fit the Eagle engine. Secondly, there are two feeders to each side of the engine, which join on to the manifolds between cylinders 1 and 2, and 4 and 5. These feeders have bends in them which enable them to pass down and out as indicated on Lec.904, to an aluminium induction pipe jacketed and fitted above a Duplex carburetter. The feeders are looking downwards all the way to the carburetter, and will therefore tend to drain themselves very efficiently of residual petrol and any deposit of petrol. They should also have quite a noticeable ramming effect, and in view of the fact that we are providing by means of the Contd. R.R. 235A (500 L) (S.D. 40B. 25+17) Bm. 2/15613. | ||