torque bias

[David Eaton]

the haldex is a multiplate lockup clutch - once slip is
detected it locks up and provides progressive torque
transfer to the rear wheels of the a3/tt quattros.

this is also where bmw has gone with their new awd system
for the x-series and the new touring wagons.  it is rwd
until slip the progressively fwd up to 100%.  it also uses a
multiplate lockup clutch - but not a haldex coupling.

dave
'01 s8

----- Original Message Follows -----
Thinking about it now, I think Dave and Dan and others must
be right. An
open diferential can't proportion torque other than 50-50.
As for Haldex, Reviewing earlier threads and other sources
shows they
operate essetialy as FWD until slip occurs.
Now if only I had that old literature then I could see what
those damn
marketers were up to...
Steve