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).
Series of tests on front torque reaction dampers to determine their effectiveness.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page019 | |
| Date | 9th November 1932 | |
| To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} From G.W.H. X4057 Hotel de France, Chateauroux, FRANCE. 2.PER.II. 9.11.32. TESTS FOR TORQUE REACTION. we have carried out further tests this morning with the front torque reaction dampers. We have finally come to the conclusion that these dampers could be dispensed with. 1st Test. The first test was carried out with the loading springs slackened off one turn from choc-a-bloc. Result. we found that there was a bad torque reaction period between 8 and 9 m.p.h. on top gear. There were also periods from 11 - 12 and 16 - 18 m.p.h. 2nd Test. The front dampers were tightened up choc-a-bloc. Result. This brought up the 8 - 9 m.p.h. period much worse. The 11 - 12 and 16 - 18 m.p.h. periods were not materially increased. 3rd Test. The front dampers slackened right off. Result. No period from 8 - 9 m.p.h. and the 11 - 12 and 16 - 18 m.p.h. periods were considerably reduced, practically non existent. These dampers do not in any way affect jellying. The radiator and headlamp movement have not been affected throughout the tests. The 8 - 9 m.p.h. period was missed during yesterday's tests and therefore was not mentioned in our report. These tests were carried out with semi - hard rubbers fitted to the front engine mounting , as stated by Hs{Lord Ernest Hives - Chair}/Les.{Ivan A. Leslie} 4th Test. Front dampers slackened right off. Side torque dampers choc-a-bloc. | ||