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).
Solutions for a steering problem, including a spring damped pendulum and hydraulic arrangements.
| Identifier | ExFiles\Box 68\1\ scan0072 | |
| Date | 15th June 1928 | |
| Hs.{Lord Ernest Hives - Chair} from T. c. to BJ. BY.{R.W. Bailey - Chief Engineer} 48430 RL/M15.6.28. RE. PROBLEM OF STEERING. X.7430 X.7830 X.8430 X.235 We have now sent you a spring damped pendulum lever with laminated springs. This is arranged so that in addition to the zero damping there is an increase of damping with deflection. Such a device ought to help the steering problem. In EAC.10 we hope the engine suspension - 4 arm - and the central 'cross' member will render the frame stiffer against torsional deflection, and so permit the ordinary front hydraulic dampers to be set to a higher poundage, (the road springs being kept flexible). The third and remaining possible damping to be tried is the hydraulic arrangement we sent you, which requires some modification. We would like it to be arranged so as to resist the steering as little as possible to slow changes, and yet create considerable resistance against movements of the periodicity of the road wheels between 60 and 70 m.p.h. - i.e. about 600 revs./min. I believe no valves will be best, and one of our kinetic restrictions in the passage that conveys the oil from one side of the piston to the other. R.{Sir Henry Royce} | ||