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Simple approximation for designing Ackermann geometry. A simple approximation to perfect Ackermann steering geometry may be generated by moving the steering pivot points [clarification needed] inward so as to lie on a line drawn between the steering kingpins, which is the pivot point, and the centre of the rear axle. [3]
"By this means the major portion of the load on the lorry can be transferred to the rear part of the tractor, and this increases the load on the rear wheels (the drivers) of the latter, and consequently the adhesion." They make the point that "The tractor system, of course, means in effect an articulated six-wheel vehicle".
In the meantime, a gasoline-powered motor home was built by Lombard for Holman Harry (Flannery) Linn of Old Town, Maine to pull the equipment wagon of his dog & pony show, resembling a trolley car only with wheels in front and Lombard crawlers in rear. Linn had experimented with gasoline and steam-powered vehicles and six-wheel drive before ...
Csonka transaxle from 1908 Drawing of the "Alfa Transaxle" layout, with gearbox mounted in block at the rear differential; also inboard brakes to reduce unsprung mass. A transaxle is a single mechanical device which combines the functions of an automobile's transmission, axle, and differential into one integrated assembly. [1]
Since the torque tube does not constrain the car's body to the axle in the lateral (side-to-side) direction, a panhard rod is often used for this purpose. The combination of the panhard rod and the torque tube allows the easy implementation of soft coil springs in the rear to give good ride quality, as in Buicks after 1937.
In the late 1970s, Ertl offered a series of plastic model kits of heavy commercial trucks, over-the-road trailers, tractors, plows, and farm wagons. Although these kits never achieved the hoped-for popularity, they led to the acquisition of AMT. In 1983, AMT was purchased by Ertl from Lesney, and renamed AMT/Ertl.
The wheel and tire assembly attach to the hub or spindle of the knuckle where the tire/wheel rotates while being held in a stable plane of motion by the knuckle/suspension assembly. In the attached photograph of a double-wishbone suspension, the knuckle is shown attached to the upper control arm at the top and the lower control arm at the bottom.
The term tractive effort is often qualified as starting tractive effort, continuous tractive effort and maximum tractive effort.These terms apply to different operating conditions, but are related by common mechanical factors: input torque to the driving wheels, the wheel diameter, coefficient of friction (μ) between the driving wheels and supporting surface, and the weight applied to the ...