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).
Page discussing the self-centering characteristics of steering systems, with diagrams illustrating pivot types and force moments.
| Identifier | ExFiles\Box 178\1\ img110 | |
| Date | 13th July 1926 guessed | |
| - 11 - SKETCH B. VERTICAL PIVOT. LONGITUDINALLY RAKED PIVOTS. (e) Self-Centering. We have already pointed out two features on a conventional steering system which tend to promote self-centering. Of these by far the most important is the castoring action obtained by longitudinal inclination of the pivots. In addition, however, if absolutely vertical pivots were employed without centre-point steering, the car SKETCH C. SELF CENTRING VERTICAL PIVOTS No CASTOR DIRECTION OF MOTION MOMENT OF ROLLING RESISTANCE FORCE F ABOUT N.S. PIVOT = x Cos α MOMENT OF ROLLING RESISTANCE FORCE F ABOUT O.S. PIVOT = x Cos β AND ANGLE β > ANGLE α ∴ Cosβ < Cosα RESTORING COUPLE TENDING TO SELF CENTRE THE STEERING IS x(Cosα - Cosβ). | ||