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Many three-wheeled vehicles that exist in the form of motor-based machinery are often called trikes and often the only front wheel and mechanical similar to that of a motorcycle and the rear axle similar to a car Often these vehicles are built owner using a portion of a rear engine, rear Volkswagen Beetle propulsion in combination with a front end of the motorcycle other tricycles include ATVs which are especially designed for off-road use.
Motor vehicles with three wheels can have either a wheel at the back and two in front, for example Morgan Motor Company or a wheel in front and two behind Reliant Robin as a result of better security when braking, a form increasingly popular is the tadpole front or rear direction sometimes tricycle with front wheel drive, but in general with driving back a variant of that of the highlighting is the Scott Sociable resembling a four-wheeled vehicle with missing a front wheel 1.
Cars with three wheels, including cycle cars and microcars bubbles cars are built for economic reasons in the UK for tax benefits or the United States to take advantage of lower safety rules, being ranked motorcycles Due their lightweight construction and the potential better streamlining, cars with three wheels are generally less expensive to operate citation needed.
Three-wheeled rickshaws called vehicles are a common public transportation means in many countries of the world, and are an essential form of urban transportation in many developing countries such as India and the Philippines.
Rickshaws are a form of innovation in transportation many Eastern citation needed.
In the early pioneers of the automobile Karl Benz has developed a number of models with three wheels 2 One of them, the Benz Patent-Motorwagen 3 is considered the first automobile built for this purpose was made in 1885.
In 1896, John Henry Knight showed a three-car in the large exhibition 2.
In 1897, inventor Edward Butler was Butler Essence Cycle, another car with three wheels.
A Conti 6 hp car Sort attended but did not complete a Beijing 1907 -With-Paris race sponsored by a French newspaper, Le Matin 4.
Diagram showing an initial velocity vector of three and the angular displacement corresponding to the initial wheel positions required to change the direction of the initial velocity vector of the same value when the power using various automotive steering mechanism configurations with three wheels .
A configuration with two wheels in front and one wheel in the back has two advantages, he improved aerodynamics and allows easy small power station of the light motorcycle and the rear wheel to use this approach was used by Messerschmitt KR200 and BMW Isetta Alternatively, a more conventional front engine, the wheel drive arrangement before as is usual in four-wheeled vehicles may be used, with subsequent advantages of the transverse stability of the center gravity is more forward traction and two-wheel drive instead of one.
With two front wheels the tadpole-shaped or reverse Tricycle the vehicle is much more stable in the brake turns, but remains subject to the reversal in the normal cornering compared to a vehicle with four wheels equivalent, unless the mass center is lower and further back or derivatives motorcycle designs suffer from most of the weight being rearwardly the citation of necessary vehicle.
For less wind resistance that increases the fuel consumption, a teardrop shape is often used citation needed A drop of water is wide and round in front, tapered rear configuration with three wheels allows both wheels forward to create the wide surface of the vehicle round the only rear wheel allows the vehicle to narrow the examples include the rear series Aptera 2 and Myers Motors NmG.
Featuring a wheel in front and two at the rear in order to reduce the cost of the steering mechanism, but greatly reduces the lateral cornering stability during braking.
When the single wheel at the front the delta-shaped, as in the tricycle pedals child, the vehicle is inherently unstable in a braking turn, the tilting forces combined at the rotation center of gravity and braking can quickly extend beyond the triangle formed by the contact surfaces of the wheels This type if not foreseen, also has a greater tendency to skid exchange ends when citation needed roughly treated.
The disadvantage of a three-wheeled configuration is lateral instability - the car falling into a turn before it will slide This can be avoided 3 ways.
By placing the center of mass closer to the ground.
By placing the center of mass closer to the front wheels.
In the case of an ATV three wheels, tipping can be avoided by the rider leaning into turns.
To improve the stability of three-wheeled vehicles are designed as three-wheelers inclination so that they bend in turns as a motorcyclist would The inclination can be controlled manually, mechanically or by computer.
A body tilting three wheels or wheel and tilt in the direction of the turn These vehicles can jam safely, even with a narrow track.
Some vehicles three tilting wheels can be considered forms of feet forward cabin motorcycles or bikes or both.
Several configurations are practical two front wheels and one rear, where three-wheel tilt, using the acronym 2F3T citation needed either two before three tilt Other changes 1F1T, citation needed which only the front wheel rocker, an example being the Vandenbrink Carver did in the Netherlands.
Tilt can be actively controlled by applying a force between the paired wheels A leaner free is balanced by the direction, as one tracked vehicle That still leaves some advantages in tension, and the inclination can be locked to the fastest parking that a support may be deployed.
Engine can be one, two or three wheels, inclined or not many possible arrangements require U-rings particularly flexible, which favors the other citation needed opportunities.
Any additional laterally spaced wheel vehicle can benefit by providing stability gains if there is a mechanism to block the laterally spaced wheels at one point against the road map in some vehicles countersteered this advantage is generally only available to the stop.
In other types in which the angle of inclination is controlled directly this additional stability is constant at all speeds.
In a vehicle countersteered loss of traction will result in a decline while in a controlled design tilt of a fall can not occur.
Various electrical and hydraulic systems have been used to modify the behavior TTW, with notable success in the Carver.
Because of the slope, there is not necessarily transfer load between the wheels in turns, so that the rule of tadpoles or 2F reverse trike and understeer or oversteer Deltas 1F standard trike does s' not necessarily apply.
German car wheels, wheels, the center of mass closer initial velocity vector.