Re: the squeal factor

[QSHIPQ@aol.com]

In a message dated 11/4/99 7:36:33 PM Central Standard Time, 
Dave.Eaton@clear.net.nz writes:

> there seems to be some difficulty with the fact that the torsen doesn't
>  display the abysmal behaviour of the locker during turns.  i say abysmal
>  because from jeff's and scott's descriptions, i certainly wouldn't trade my
>  car for something which exhibited such poor dynamics.  anyway i digress....

Not relevent.  Dave this isnt' a discussion as to which device is "better" 
only looking to understand one that isn't so predictable.  Driving around 
with the center diff locked all the time on dry cf, isn't something any of us 
lockers would recommend.  However, comparing the two there are some obvious 
differences as to their operation, one allows axle slip the other doesn't.

>  
>  what jeff and others fail to understand is that, within a particular range
>  of operating parameters, the torsen will cause judder and squeal.  as jeff
>  himself pointed out last year.

That would be a -/= 15m turn for a 99in wheelbase.  The judder is the torsen 
trying to accomodate different axle rotations, which it *can* do, but not 
very well.


>  with my cars, it happens most times i have to get out of the car park (low
>  cf, flat concrete).  during moderate turns (not full lock) and slow speeds,
>  it is quite common to hear tyre squeal and feel the axles hop indicating
>  locked axles.
>  
>  try it yourself.

BTDT.  Comparing it back to back with a locker, you would understand the 
difference.  I think you misunderstand what you are 'feeling'.  Doesn't the 
feeling stay the same if you take a less that 15M turn?  If so, wouldn't that 
indicate that the experiment you presented has a problem, since on a 99in 
wheelbase, a turn of less than 15m would indicate that the torsen is allowing 
axle speed differences?

I'm not with you on this one Dave.

Even if we *accept* what you say is true, if the locker in the same wheelbase 
car starts pushing before the torsen, wouldn't that indicate that the torsen 
allows some axle speed differences?  My experience.

Scott Justusson