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 inertia, frame frequency, and centre point wing mounting.
| Identifier | ExFiles\Box 173\1\ img292 | |
| Date | 12th February 1934 guessed | |
| VIII already plenty stiff enough. However one must remember that - they have stiff all steel bodies ENGINE INERTIA The American engines are so heavy and have such a large moment of inertia that if front engine feet are used to stiffen the frame, the mass of the engine reduces the frequency by more than the increased stiffness raises it. I do not see that we can do much better than use torque reaction dampers to damp the frame and engine simultaneously as we do now. CENTRE POINT WING MOUNTING The front wings & Radiator are now mounted Chevrolet wise on all G.M's stuff. It takes the inertia of the front wings (which is considerable) out of the system. I think we should investigate a similar scheme. Measurement of Frame Frequency. This is done on the bump with a number of small projections on the drums in exactly the same way as we used for radiator shake. | ||