Re: More bytes on bites

[Dave Eaton <dave.eaton@minedu.govt.nz>]

>------------------------------
>
>Date: Mon, 2 Mar 1998 07:59:02 EST
>From: QSHIPQ <QSHIPQ@aol.com>

>Orin:
>It's exactly true if the two shafts are rotating at a DIFFERENT speed Orin.
>Think of it this way.  When the slip angle gets high enough, the Trg (Torque
>at the ring gear) = Engine Torque/HP (here you can insert 225 lb/ft just as
>easily), that means the rear is SLOWER turning than the front.  Why?  Because
>at a high enough slip angle, the rears will slow in relation to the fronts
>(nothing to do with torque, all to do with slip angle and track), but the
>Torsen is a dumb device, and will send maximum designed torque split from the
>ring gear to that slower spinning axle.  For the exact reason you state above,

********   no   *************  it won't.

you keep treating the torsen like an open diff.  the torsen will send a
*****************proportion***************** of torque to the slower moving
driveshaft until torque equilibrium is re-established.  it is not an all or
nothing device like an open diff.

the torsen can send 50% torque to a driveshaft, 55%, 60%, 62%, 66% up to 70%.
it will seek a torque distribution equilibrium between the driveshafts.  once
this has been achieved, ***no*** more torque is transferred. you keep
overstating this (or perhaps misunderstand this point) in order to make your
case.

in my 'wheel lift' scenario (see previous post), the torque transfer occurs
twice, and both times it's an advantage to the vehicle.  no bite.  end of
story.


>it's design is to apportion more torque to the slower spinning axle, to make
>them spin at the same speed.  Now, understand that unlike a rwd or fwd torsen,
>slip angle on a center torsen may be happening for the exact WRONG reason
>(slipping wheels in this case slows rotation of the rear axle), so the
>diminishing or equalizing torque that rwd and fwd might enjoy (specifically,
>total collective torque reduces), doesn't necessarily happen in the center
>torsens.  Why?  Because the slip angle makes the torsen think that the REAR
>has more traction than the front, which is EXACTLY not the case.  Torque
>sensing means torque to one axle is higher than the other at any given rpm.
>The torsen tries to make the shafts go the same speed, which is exactly HOW
>you get the problem above.

huh??? if you've exceeding slip angle at the rear, the front *does* have more
traction than the front.  by definition.

dave
'95 rs2
'90 ur-q