Re: Torsen differences

[QSHIPQ <QSHIPQ@aol.com>]

In a message dated 98-04-22 19:16:32 EDT, you write:

<< 
 >no, the part numbers are different, and the illustrations in the fiche of
the
> parts also indicate major differences.  btw, the page is 409-92 in the rs2
> fiche.
NO Dave.  The Torsen part number, as you read it, 409-92  as 01e 409 751A IS
the Torsen differential.  Now go to page 79 & 82 in Jeff's web page.  WHERE is
there external inputs in that diagram for the torsen operation?  The torsen
operation is complete when you get to the outside of the housing.  
 
> with regards to the spring, in the fiche this is described as a "pressure
> spring", and it looks to load the rear side gear.  it's not clear, but it
looks
> to be of less diameter than the rear spline, which is confusing but, it
looks
> to be there to apply some loading to the rear side gear.
NO.  Look on page 82 of the torsen paper.  There is NO external loading.  Also
read 3.1 and 4.3 and find where EXTERNAL forces are involved in torsen
operation.  The spring shims and bearings are LOCATING devices only.  The
switch is complete before you exit the torsen housing Dave.  You are taking
audi designs of torsen application and making them part of the torsen.  Don't
do it dave, you are confusing the panel again.
 
> the torsen, as a unit, shouldn't need locating as you suggest, as amount of
> axial float which a spring of this size would allow would clearly affect the
> operation of the needle rollers on the front shaft (parts #016 409 767 and
the
> sleeve 016 311 328).  this spring is also absent from the ur-q installation.
How can you say this?  Could the spring be absent from all 5 speed quattros,
because they AREN'T six speed quattros?  Sure they can.  Does that mean that
the spring somehow affects the operation of the torsen?  Could it be that the
6 speed torsen used the same 5 speed torsen, but was too short for the space
in the 6 speed?  Sure it could.  Read 3.1 and 4.2 PP2 again.  Where is there a
spring reference?
 
 >either way, the unit is different, but, as you say, the unit is not
"exploded"
> in the fiche to its component parts and so is a single fru.
> hth,
 >dave
> '95 rs2
> '90 ur-q
  >>
The unit has a different part number, period.  YOU can't say the TORSEN is
different, only the way it MOUNTS in the transmission is.  Think this thru.
If audi was using different torsens, why would your 20vUrq have the same,
EXACT same TORSEN part number as the v8?  Would you see any reason to use
different ones?  Like for track, turning radius, weight dist, tires, chassis,
suspension?  They are exactly the same component Dave, 100% interchangeable to
2 016 transmissions.  Now you want to tell me that the Torsen OPERATION is
different because the part number is different on an audi microfiche in a
different transmission.  Few on the panel go here with you.  Especially, when
the switch is a single part number, with NO parts listed for it, nor
available.

Dave, you don't understand what you are posting.  Confusing an already
confused bunch of folks, really doesn't help things.  The torsen component in
the microfiche gives NO insight as to it's operation.  Audi considers the
units NOT to be serviceable.  So, you have NO information as to it's
operation, BR, shims, helixes, springs, or bearings.  

You aren't helping.  The microfiche is clear, IMO.  IT's clear that everything
except fig 1 "Torsen Differential" is NOT part of the Torsen Differential.
Only part of mounting it to a given Transmission.  

Scott Justusson