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Encyclopedia > Wheelbase

In both road and rail vehicles, the wheelbase is the distance between the center of the front and rear wheels. Vehicles are non-living means of transportation. ...


Road

In automobiles, the wheelbase is the distance between the center of the front wheel, and the center of the rear wheel. At equilibrium, the total torque of the forces acting on the car is zero, and thus the wheelbase is related to the weight on each tire by the following formulas: This article or section does not cite its references or sources. ... In physics, torque can be thought of informally as rotational force. The SI units for Torque are newton meters although centinewton meters (cN·m), foot-pounds force (ft·lbf), inch pounds (lbf·in) and inch ounces (ozf·in) are also frequently used expressions of torque. ... Weight is a term of measurement referring to either an objects mass or to the gravitational force acting on the object. ...

W_f = {c over L}mg
W_r = {b over L}mg

where Wf is the weight on the front tire, Wr is the weight on the rear tire, L is the wheelbase, c is the distance from the center of gravity (CG) to the rear wheel, b is the distance from the center of gravity to the front wheel, m is the mass of the car, and g is the gravity constant (approx. 9.81 m/s2 on the surface of the Earth). So, for example, when one loads the trunk with heavy goods, the center of gravity shifts rearward and the weight on the rear tire increases causing it to sink depending upon the stiffness of the suspension. If the automobile is accelerating or decelerating, extra torque is placed on the rear or front tire respectively, and the equation relating the wheelbase, height above the ground of the CG, and the weight on each tire becomes: Weight is a term of measurement referring to either an objects mass or to the gravitational force acting on the object. ... Weight is a term of measurement referring to either an objects mass or to the gravitational force acting on the object. ... This article or section may contain original research or unverified claims. ... Mass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to. ... Gravity is a force of attraction that acts between bodies that have mass. ... Weight is a term of measurement referring to either an objects mass or to the gravitational force acting on the object. ... The front suspension components of a Ford Model T. Suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels. ... This article or section does not cite its references or sources. ... In physics, torque can be thought of informally as rotational force. The SI units for Torque are newton meters although centinewton meters (cN·m), foot-pounds force (ft·lbf), inch pounds (lbf·in) and inch ounces (ozf·in) are also frequently used expressions of torque. ... Firestone tire A tire or tyre (see spelling differences) is a device covering the circumference of a wheel. ... Firestone tire A tire or tyre (see spelling differences) is a device covering the circumference of a wheel. ...

mathrm{W_f = {c over L}mg - {h over L}ma}
mathrm{W_r = {b over L}mg + {h over L}ma}

where Wf is the weight on the front tire, Wr is the weight on the rear tire, c is the distance from the CG to the rear wheel, b is the distance from the CG to the front wheel, L is the wheelbase, m is the mass of the car, g is the acceleration of gravity (approx. 9.8 m/s2), h is the height of the CG above the ground, a is the acceleration or deceleration if the value is negative. So, as is common experience, when the automobile accelerates, the rear usually sinks and the front rises depending on the suspension. Likewise, when braking the front noses down and the rear rises. Weight is a term of measurement referring to either an objects mass or to the gravitational force acting on the object. ... Firestone tire A tire or tyre (see spelling differences) is a device covering the circumference of a wheel. ... Weight is a term of measurement referring to either an objects mass or to the gravitational force acting on the object. ... Firestone tire A tire or tyre (see spelling differences) is a device covering the circumference of a wheel. ... Mass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to. ... Gravity is a force of attraction that acts between bodies that have mass. ... The front suspension components of a Ford Model T. Suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels. ...


Because of the effect the wheelbase has on the weight transfer of the vehicle, wheelbase dimensions are crucial to the balance and steering of the automobile. For example, a car with a much greater weight load on the rear tends to understeer due to the lack of weight and therefore grip from the front tires. This is why it is crucial, when towing a single-axle caravan, to distribute the caravan's weight so that down-thrust on the tow-hook is about 100 pounds force (400 N). Likewise, a car may oversteer or even "spin out" if there is too much weight on the front tires and not enough on the rear tires. Also, when turning there is lateral torque placed upon the tires which imparts a turning force that depends upon the length of the tire distances from the CG. Thus, in a car with a short wheelbase, the short lever arm from the CG to the rear wheel will result in a greater lateral force on the rear tire which means greater acceleration and less time for the driver to adjust and prevent a spin out or worse. Weight is a term of measurement referring to either an objects mass or to the gravitational force acting on the object. ... This article or section does not cite its references or sources. ... This article or section does not cite its references or sources. ... Weight is a term of measurement referring to either an objects mass or to the gravitational force acting on the object. ... Understeer is a term for a car handling condition during cornering in which the circular path of the vehicles motion is of a markedly greater diameter than the circle indicated by the direction its wheels are pointed. ... Firestone tire A tire or tyre (see spelling differences) is a device covering the circumference of a wheel. ... Oversteer is the phenomenon ocurred in an automobile when the rear-end of it doesn´t follow the trajectory of the front-end tending to overtake this one causing the car to spin. ... Weight is a term of measurement referring to either an objects mass or to the gravitational force acting on the object. ... Firestone tire A tire or tyre (see spelling differences) is a device covering the circumference of a wheel. ... Firestone tire A tire or tyre (see spelling differences) is a device covering the circumference of a wheel. ... In physics, torque can be thought of informally as rotational force. The SI units for Torque are newton meters although centinewton meters (cN·m), foot-pounds force (ft·lbf), inch pounds (lbf·in) and inch ounces (ozf·in) are also frequently used expressions of torque. ... Firestone tire A tire or tyre (see spelling differences) is a device covering the circumference of a wheel. ... Firestone tire A tire or tyre (see spelling differences) is a device covering the circumference of a wheel. ... In physics, a force is anything that causes a free body with mass to accelerate. ... Firestone tire A tire or tyre (see spelling differences) is a device covering the circumference of a wheel. ...


Wheelbases provide the basis for one of the most common vehicle size class systems. North America Vehicle size classes in use in North America categorise automobiles by their relative lengths and volumes. ...


See also

In physics, torque can be thought of informally as rotational force. The SI units for Torque are newton meters although centinewton meters (cN·m), foot-pounds force (ft·lbf), inch pounds (lbf·in) and inch ounces (ozf·in) are also frequently used expressions of torque. ... In physics, a force is anything that causes a free body with mass to accelerate. ... Weight is a term of measurement referring to either an objects mass or to the gravitational force acting on the object. ... In physics, static equilibrium, or neutral balance, exists when the forces (actions), and torques, on all components of a defined system are balanced such that no component is undergoing an acceleration relative to the designated frame of reference. ... This article or section may contain original research or unverified claims. ...

Rail

In rail vehicles, the wheelbase follows a similar concept. It is particularly applied to steam locomotives. Short-wheelbased locomotives can negotiate sharper curves. On some larger wheelbase locomotives, driving wheels may lack flanges in order to pass curves. Great Western Railway No. ... Look up flange in Wiktionary, the free dictionary. ...


  Results from FactBites:
 
How changing the wheelbase on your rc vehicle can affect handling. (498 words)
Measuring your wheelbase is done by measuring from the center of the front axle to center of the rear axle.
Wheelbase determines how the weight of your rc truck or car is distributed over the axle, both front and rear.
Sometimes wheelbase change will be so subtle that you will not be able to see or feel any performance change, but added to any changes of caster or camber could result in some very noticeable handling improvements.
Wheelbase - Wikipedia, the free encyclopedia (590 words)
In automobiles, the wheelbase is the distance between the center of the front wheel, and the center of the rear wheel.
is the weight on the rear tire, L is the wheelbase, c is the distance from the center of gravity (CG) to the rear wheel, b is the distance from the center of gravity to the front wheel, m is the mass of the car, and g is the gravity constant (approx.
Because of the effect the wheelbase has on the weight transfer of the vehicle, wheelbase dimensions are crucial to the balance and steering of the automobile.
  More results at FactBites »

 
 

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