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).
Engine mounting tests for the 2-Goshawk-11 and Marson cars.
| Identifier | WestWitteringFiles\K\October1923\ Scan55 | |
| Date | 10th October 1923 | |
| R.R. 403A (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} ORIGINAL. Expl. No. 634 REF: E2/MS/10.10.23. EXPERIMENTAL REPORT. To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to EY. ENGINE MOUNTING. We have now tested 2-Goshawk-11 car with the engine mounted with the rigid front suspension and single-point at the rear with dampers fitted. We have tried with dampers opposite the flywheel casing on the frame. We have also tried a damper as instructed in E2/MS.10.23. We find that both types of damping reduce the vibrations; we cannot notice that there is any advantage in one scheme over the other. Owing to the fact that the vibrations with this form of mounting is considerably less than with the standard mounting, applying the friction dampers only makes a further slight improvement. We have also carried out further tests on the Marson car and there is no doubt that this car is free from torque reaction vibrations at low speeds. The power at low speeds is quite good. Hs.{Lord Ernest Hives - Chair} | ||