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).
Induction pipe tests, comparing six-cylinder pipes to four carburetters and planning future tests on an Eagle engine.
| Identifier | ExFiles\Box 42\2\ Scan033 | |
| Date | 4th April 1918 | |
| To R.{Sir Henry Royce} from EH. c. to CJ. c. to E.{Mr Elliott - Chief Engineer} c. to Ey. COPY EH1/L46.4.18. X.3286. X.3278 X.2498 X.1863 INDUCTION PIPE TESTS Further tests of the six cylinder pipes prove that it is easier to obtain good slow running than with the 4 carburetters. If we retard the magneto sufficiently or use a battery ignition, we can run the engine at 200 r.p.m. We anticipate we shall have to cut the curved slots in the throttle barrel as in the original Claudel because there is a strong spot just before the dead slow running position. We have asked for a pair of the Claudel straight through type carburetters with the concentric ring float to test. We thought we might fit up an "Eagle" engine with a pair of six cylinder pipes and carburetters, and when we are satisfied with it; we get it tested in the air. EH. | ||