dave.eaton at clear.net.nz
Fri Feb 20 18:21:50 EST 2004
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.
----- 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
operate essetialy as FWD until slip occurs.
Now if only I had that old literature then I could see what
marketers were up to...
More information about the quattro