Front - Rear Torque Bias

[Doug Johnson]

Greg,

Regardless of what the sales literature says, what you experience with a
locked open differential is not equal torque being transmitted to each
wheel, it's each wheel turning at the same rate off speed.

Speed and torque are not the same.

FWIW,

 ~ Doug

> -----Original Message-----
> From: Greg Galinsky [mailto:nokian at aaahawk.com]
> Sent: Wednesday, February 18, 2004 10:59 AM
> To: Doug Johnson
> Cc: Brady Moffatt; Quattro-Bounces (E-mail); Quattro List (E-mail)
> Subject: Re: Front - Rear Torque Bias
>
>
> I'm just going from recall in what I saw from some Audi sales
> literature.  My experience from ice trials with the 4Q tends to make me
> confirm the change to 50-50 with the center diff locked.  Would have to
> go thru all the old Audi sales literature that I have to backup my memory
>
> Greg Galinsky
>
>
> Doug Johnson wrote:
> > Greg,
> >
> > Actually, with a differential locked, even though the wheels turn at the
> > same speed, the torque is far not "controlled" by the
> differential.  It's
> > dependant upon the friction between the tire and the ground.
> >
> > Again, one tire on ice and the other on high-friction surface,
> and BECAUSE
> > the wheels are rotating at the same speed, and BECAUSE the
> resistance that
> > each feels to its rotation, the torque being transmitted to
> each of these
> > wheels is far different.  It's dependant upon the friction
> between the tire
> > and the surface that's acting against (the ground).  The best way to
> > visualize the difference in torque, is to think of how much
> force each of
> > these two axles "feels" in this situation.  I hope it's clear that, even
> > though the tires turn at the same speed, very little torque
> (force) is being
> > transmitted through the axle to the tire sitting on the ice.
> >
> > HTH,
> >
> >  ~ Doug
>
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