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 comparing Ross and Marles steering mechanisms and defining the fundamentals of centre-point steering layout.
| Identifier | ExFiles\Box 178\1\ img107 | |
| Date | 13th July 1926 guessed | |
| - 8 - such as the "Ross". These enable a greater leverage to be obtained on a lock than when running straight. Chief disadvantage - small area of wearing surface, lack of strength due to design limitations. They can be made semi-reversible. Marles steering is designed to reduce internal friction. Actually results from R-R tests shew it to be about the same as the screw and nut. Wearing qualities questionable. Our trial of the Marles has shewn that there is no royal road to perfect steering. STEERING. Ross. MARLES. (III) FUNDAMENTALS OF CONVENTIONAL STEERING LAYOUT. (a) Centre-point steering. When a line through the centre of a pivot or 'kingpin' produced cuts the road in the centre of the tyre in the front elevation of the car, this is termed - Centre-point steering (See sketch 'A'). Theoretically, under these conditions, no force acting between the road and tyre should be able to turn the wheel and stub axle about contd. | ||