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).
Devices used to reduce internal friction in conventional leaf springs, including a product called 'Rectaskid'.
| Identifier | ExFiles\Box 178\1\ img185 | |
| Date | 28th August 1926 guessed | |
| - 13 - necessitates some sort of torque control as on the Ford and 7 HP. Austin. IV: DEVICES USED IN CONJUNCTION WITH THE CONVENTIONAL LEAF SPRING. (a) Internal friction eliminators. From time to time various devices have been put on the market to reduce the internal friction of the leaf spring. None of these have been widely used principally owing to their poor design, but also in a large measure owing to the fact that it is quite useless to remove the internal friction of a spring unless at the same time some sort of fluid damping is provided to take its place. A spring with no internal or external damping is impossible at high speeds owing to pitching, is bad for rolling, and is liable to cause axle juddering when braking. The riding of the car will not be improved at all if the internal spring friction is replaced by increased loading on the friction vibration dampers. The 'Rectaskid' was very widely advertised and consisted of small ball bearings inserted between the spring leaves. Its anti-skidding properties existed to a certain extent, but appeared to be due chiefly to the tremendous amount of rolling allowed on corners. Rolling reduces the intensity of the side thrust imparted to the wheels by the body when centrifugal force acts on it. Apart from the general defects previously mentioned, the Rectaskid fitment contd. | ||