torque bias

[Stephen Santoliquido]

As I understand "torque-steer" it is caused by the twist of the shaft under
hard acceleration.
The longer a shaft, the more it twists under load. If two shafts are of
un-equal length one will have more twist than the other.
During steady conditions or gentle acceleration, this is of no consequence.
But under hard acceleration the effect is that the longer shaft takes longer
to transfer the torque to the wheels as it "winds up". This is a transient
effect, and is felt as the car pulling towards the side with the longer
shaft. If the car has a positive steering radius, the steering wheel will
pull in the same direction. If the car has a negative steering radius, the
steering wheel will pull in the opposite direction.
So in terms of front-rear bias, I suppose that under hard acceleration there
must initially be more torque to the front as the longer rear shaft winds
up.
Steve

> Isn't torque bias also a function of the length of the axle shaft?
> Thought that was why some fwd cars are more prone to torque
> steer than
> others. Some designs came out with equal length axle shafts vs others?
>
> Brain is not in gear yet
>
> Greg Galinsky
>