Handling the Rein

[QSHIPQ@aol.com]

Dave Eaton writes, regarding Sarge's post:

>the 90 degree rain corner explanation is all wrog imho.
>since you're overcooking it on entry to the corner, this means that your
>rears are slipping (oversteer), and the torque will be going to the
>[virtual] axle with the most grip which is the front, not the rear.  the
>result is the torsen sending more power to the front to pull you through
>the corner.  surely.

I believe you to be backwards.  Jeff G actually said he filmed this scenario.
As you overcook a corner, you will find that the rears are hanging out, and
the slip angle is so much that the rears slow, they are plowing sideways, not
forward, more so than the fronts, since you have them on the inside of the
turn and steering toward the drift.  So the rear axle is spinning slower than
the front, on a torsen car, more torque will be transmitted to those slower
spinning wheels.  Let off the gas, the torsen will now transmit less torque to
the rear axle (since letting off the gas is decreasing torque by definition)
hunting back to a 50/50 split, which results in understeer, or if you went too
far already, the back end unloads, and you just got a spin from lift throttle
oversteer.  Dave, take a look at your power tables for the Urq and the RS2.
Apply those to your throttle position.  As you decrease output of the motor,
"splitting torque F/R" really doesn't mean much.  You are really back to good
'ole chassis dynamics.  And the torsen still hunts, upsetting those dynamics.
You are talking about rwd oversteer to fwd understeer and/or lift throttle
oversteer, all in the same car and turn.

HTH

Scott Justusson
QSHIPQ@aol.com
'87 5ktqwRS2
'86 5ktqw
'84 Urq