If you believe your FWD car is not effected by torque, let go of the steering wheel and floor the throttle LOL
mike
Ray O wrote:
>
>
>> I think a major difficulty in this discussion is that there is probably
>> no definitive definition of "torque steer" published by a universally
>> accepted authority like the SAE.
>
> After having been whaled on by a number of people because I adopt a fairly
> broad definition (directional change as a result of engine torque) as
> opposed to a narrow definition (a force acting directly on the steering
> linkage due to a non-zero scrub radius and unequal traction on a
> front-drive car), all I can say is "I agree." :-)
>
> I agree that differences in traction can cause a
>> vehicle to change its direction of travel, but I do not know whether or
>> not that this is also considered to be torque steer or not.
>
> Actually I think its one case that is almost universally called torque
> steer. When a car has a non-zero scrub radius, the force the driven front
> wheel applies to the pavement results in an equal force forward on the
> steering knuckle, and the non-zero scrub radius turns that into a torque
> on the steering knuckle, countered by the tie-rods and steering rack or
> sector gear. So long as both front wheels have equal traction, the equal
> and opposite forces in each tie rod act aginst each other through the rack
> or center link and there's no net force on the steering wheel. But when
> one wheel loses traction, its force disappears and the other wheel's force
> tries to rotate the steering wheel.