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).
Test procedures and requirements for various engines, including B.22, C.16, and the B.23 O.H.C. engine.
| Identifier | ExFiles\Box 155\2\ scan0003 | |
| Date | 24th November 1936 | |
| -3- No.30 BED. B.22. Engine to be brought up to gear quietening stage for fitting in B.56.BN. {W.O. Bentley / Mr Barrington} Tests required as follows:- (1) Power Curve. (2) Ignition curves (Silencer std. and Shell No.1.) (a) Minimum advance for max. power. (b) Line to be cut out detonations. (c) Set ignition advance to give (fixed hand control) same advance as non-detonation point at 500 R.P.M. full throttle, then check complete curve giving advance and power and what the static setting is. The above will give figures for production, of timing with Delco and deturbulated head. C.16. Following B.22., C.16. is the next unit for test. (1) Requires ignition curves as carried out on B.22. (2) Comparison of slow running and power with small bore and standard induction pipes. (3) Leaving small induction pipe on unit to be brought up to gear quietening stage, later to be fitted in 18.G.1V. B.23. O.H.C. Engine. (1) Continue experiments with chain periods and issue report. (2) Tests with balanced induction pipe as made with restriction washers. (3) Exhaust valve temperature, also with repeat of valve expansion. (4) Valve bounce; if existing springs are as weak as can be used in order not to bounce at 4500 R.P.M. (5) Ignition curves. Figures to give Wst. in order to produce a Delco governor for "non detonating" at low speeds and max power above. Rm {William Robotham - Chief Engineer} /Swdl. {Len H. Swindell} | ||