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).
Vehicle suspension principles, focusing on conventional leaf spring systems.
| Identifier | ExFiles\Box 178\1\ img181 | |
| Date | 28th August 1926 guessed | |
| - 9 - springs. For high speed work they are absolutely essential. A car arranged to perform well at high speed is very likely to ride like a truck at low speeds. A case in point is that of the Hispano which is very uncomfortable at anything below 40 m.p.h. on a normal main road. If there was no damping in a car suspension, once it had struck a bump it would continue to oscillate almost indefinitely until air resistance to the body motion brought it to rest. This is why when coil springs are used, as on the Lancia, fluid damping has to be employed. Mechanical friction damping could be used but it would defeat the object of the coil spring. III: CONVENTIONAL LEAF SPRING SUSPENSIONS. (a) Requirements of a spring. The main requirements of an automobile spring are:- (1) Long life and strength. (2) Sufficient flexibility. (3) Sufficient, but not too much, internal damping. (4) Damping of the right kind. (b) Various types of road spring - semi-elliptic. There are various ways of arranging leaf springs. Probably the most popular method at present adopted is the semi-elliptic. The chief advantages of this method of fixing the spring are:- TWISTING RESISTED BY SHACKLE contd. | ||