General layout of two and three wheeler

Implementations include: Some form of one or more parallelogramssuch as on the Tripendo pictured above and the Mercedes-Benz F Life Jet Concept Vehicle pictured below.

tilting three wheeler designs

These vehicles are called free-leaners and they must be balanced and leaned into a turn with countersteeringjust as with motorcycles or other single-track vehicles. Depending on how the tilting is implemented, a tilting vehicle can be oriented independent of cross slopesuch as from the crown in a road or a soft shoulder.

Three wheeler atv

The wheel must support acceleration loads as well as lateral forces when in a turn, and loss of traction can be a challenge. According to the manufacturers' marketing these three-wheelers are more stable, have a better weight distribution and handle poor road surfaces better compared to a standard two-wheeled scooter. Wheel layout[ edit ] As with tricycles in general, the two main wheel layouts are: delta, with one wheel in front and two wheels in back. Two rear[ edit ] Having one wheel in front and two in the rear for power reduces the cost of the steering mechanism but greatly decreases lateral stability when cornering while braking. Motorcycle-derived designs suffer from most of the weight being towards the rear of the vehicle. Riders may find this more pleasant than the alternative, and vehicle components, such as the frame, wheels, and tires, can avoid large side loads. This can be prevented in three ways: by placing the center of mass closer to the ground by placing the center of mass closer to the axle with two wheels by increasing the track width In the case of a three-wheeled ATV, tipping may be avoided by the rider leaning into turns. Steering[ edit ] Rear-wheel steering tends to be directionally unstable, and so the vast majority of trikes employ front-wheel steering. Unsourced material may be challenged and removed. Some form of crank , in which case the two wheels are not directly side-by-side. Other forced-tilted vehicles may incorporate automatic countersteering. The single rear wheel allows the vehicle to taper at the back. Vehicles for which the rider has direct control over the lean angle include the General Motors Lean Machine, in which the rider controlled lean with foot pedals, [10] and the Tripendo, in which the rider controls lean by hand with a lever.

According to the manufacturers' marketing these three-wheelers are more stable, have a better weight distribution and handle poor road surfaces better compared to a standard two-wheeled scooter.

Two common drive configurations are: Drive one tilting wheel in the rear. The wheel must support acceleration loads as well as lateral forces when in a turn, and loss of traction can be a challenge. Some form a pair of swingarmspossibly connected by some form of bell crank.

In either case, the tilting mechanism may be lockable to facilitate keeping the vehicle upright when stopped or parked.

Steering[ edit ] Rear-wheel steering tends to be directionally unstable, and so the vast majority of trikes employ front-wheel steering. Power[ edit ] Power may come from the rider, as on the Tripendo, from batteries and electric motors, as on the Toyota i-Roador from conventional internal combustion engines, as on the Yamaha Tricity.

This type, if not tipped, also has a greater tendency to spin out "swap ends" when handled roughly. An alternative is for the driver to control the tilt only, and the chassis steers automatically.

two and three wheeler book pdf

Less common drive configurations include: Drive two tilting wheels in the rear. Motorcycle-derived designs suffer from most of the weight being towards the rear of the vehicle.

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