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).
Basic tests for engine torque reaction and vibrations.
| Identifier | ExFiles\Box 183\M22\ img261 | |
| Date | 23th September 1933 | |
| R.R. 493A (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} BASIC TESTS, ENGINE TORQUE REACTION / VIBRATIONS EXPERIMENTAL REPORT. Expl. No. REF: H.5/A.C23.9.33 To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to GJ. c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to HY.{Tom Haldenby - Plant Engineer} TORQUE REACTION VIBRATIONS. V4538 V4604 TORQUE Engine Mass The engine was supported in the frame at two points on the line of the crankshaft centre so that theoretically it was free to rotate about the shaft. Practically, it was restricted by various items such as - steering box connections (although we slacked these off as far as possible) - water pipe connections, controls etc. The engine was then run driving the car at 16 m.p.h. on top gear on the dynamometer. The torque was taken direct through to the floor by means of a hand placed on the top of the tappet cover. Torque reaction vibrations were still present although less intense than with a fixed mounting. This we did not expect and under the circumstances concluded that we were not getting all the torque and contd:- | ||