Misquoting the spiderman

[QSHIPQ <QSHIPQ@aol.com>]

Dave E. writes:
>errr, no.  scott states that the torsen bite can affect a car when in high cf
>conditions (dry tarmac), not low cf (snow, ice).  in the pc article, the
torsen
>is doing exactly what it is designed to do.  shifting torque at tmax (ie. 70%
>of torque) on dry tarmac is what is called the spider bite.
>i don't have any doubt that the locked centre could be better in low cf
>conditions because the tshift is 50% of torque, while with the torsen, this
can
>be 70%.
>dave
>'95 rs2
>'90 ur-q

"Nit 1" :  
Err,no Dave.  Scott states that the torsen bite occurs in a turn before wheel
lift.  So that can be in high or low or anywhere in between.  As cf gets
really low the spider bites sooner, altho one could argue that Trg is reduced
(and that's true) the significance of that reduced Trg becomes higher.  IN
other words, shifting smaller amounts of torque in low cf has a greater effect
on the chassis dynamics in a turn.  Once the wheel lifts, a torsen is back to
being a great traction device.  

"Nit 2"
A 22/78/78/22 can only SHIFT 56% of engine torque, not 70 Dave (Tshift Max =
T1 - T2).  A locked center shifts no torque (again we assume same cf for 4
tires for KISS), whereas a torsen can shift 56% of torque.  

"Nit 3"
A torsen that "hunts" in a straight line will also hunt in a turn.  What's the
difference, the dumb switch is only more confused about the 'traction' inputs
in a turn, cuz there's more of em.

Your posts indicate that you are still confused of the torsen operation.
Don't worry 'bout it though, the torsen is much more confused than you given
the same inputs to traction.  


:)

Scott Justusson