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).
Descriptive document detailing the Back Axle, Front Axle, and Steering mechanisms.
| Identifier | Morton\M14\ img008 | |
| Date | 18th September 1922 guessed | |
| (H). BACK AXLE. Is of very light construction having aluminium central box, steel tubes with large flanges and a substantial tie rod; it is extremely compact for the diameter of the bevel gear. The road wheels are entirely mounted on extensions of the tubes (termed "full floating") therefore no part of the rear axle is subject to reverse stresses due to the weight carried, the internal driving shafts being subject to torsional stresses only. The bevel gears are spirally cut and the pinion is fitted with a third (nose) bearing so that its alignment is maintained. The silence and durability of the nickel steel case hardened bevels is extremely great owing to the effective support of both members of the bevel transmission. (I) FRONT AXLE The front axle is a high tensile alloy steel forging of I section of light and accurate proportions, also the stub axles which are of large diameter carefully radiused and bored for strength and lightness. The steering pivots are arranged to give "centre point steering" so as to reduce to a minimum the forces exerted upon the steering gear through rough roads, soft borders to roads, and deflated tyres. The road wheel hubs have extra provision to render them oil retaining, and water and mud excluding. The attachment of the road springs (patented) is carried out in a unique manner by the use of a steel sheath which fits keys on the axle, transmitting the shocks directly from the axle to the upper plate of the spring to reduce the tendency to shear the central bolt. The steering arms are attached by the patented RR. system used in the larger chassis. (J) STEERING. The steering is by worm and nut as in the larger RR. chassis. The klaxon, ignition, and throttle controls are placed on and above the steering wheel as in RR. practice (but the ignition | ||