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).
Tests on torque reaction dampers, engine feet, and rubbers to improve engine smoothness and stability.
| Identifier | ExFiles\Box 14\5\ Scan308 | |
| Date | 15th October 1934 | |
| -2- Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}20/KW.15.10.34. The torque reaction dampers were then fitted, set with a friction load of 35 lbs. (this having been found to give the best results.) The result was, no clutch jaggers could be obtained under any condition that we could test. Headlamp and wing movement considerably reduced, steering as selective and stable as present standard. We then fitted the Terraplane rubbers to the front engine feet to steady the engine from rocking over. This did not make any difference. The standard front engine feet with the harder rubbers were then tried. These produced more boom and noticeable vibration. We therefore reverted to the Terraplane rubbers. We have therefore again come to the conclusion that the fitting of the central mounting, torque reaction dampers, and Terraplane design of front engine feet, with the flexible mounting of the rear, gives us the selectiveness of the steering, with an improved smoothness of the engine. Hs{Lord Ernest Hives - Chair}/G.W.Hancock. | ||