rec.autos.simulators

GPL diff clutches & real life

J. Todd Wass

GPL diff clutches & real life

by J. Todd Wass » Thu, 14 Mar 2002 08:02:20

  This is kind of neat.  Here's a tutorial with pictures of modifiying the
number of clutches on a real differential.  Good thing all we have to do is
click a button in GPL :0)

http://www.racesimcentral.net/

Hmm...  It's gotta be tough to adjust those ramp angles ;-)

Todd Wasson
---
Performance Simulations
Drag Racing and Top Speed Prediction
Software
http://www.racesimcentral.net/

My little car sim screenshots:
http://www.racesimcentral.net/

Haqsa

GPL diff clutches & real life

by Haqsa » Thu, 14 Mar 2002 09:04:25

Interesting article, but I don't think it's quite the same thing.  I
don't see any ramps in that picture which would actuate the clutches, it
appears to depend on the preload springs and perhaps the thrust loading
of the spider gears.  Unless maybe the author just didn't show those
parts in the pics.  Anyway here is a site which has pics of a diff which
I think is more similar to what's being simulated in GPL:

http://icpcitation.com/variloc_theory.htm

As you can see, this diff has sleeves with ramps that actuate the
clutches when torque is applied.  The sleeves can be changed to get
different ramp angles.



Doug Millike

GPL diff clutches & real life

by Doug Millike » Thu, 14 Mar 2002 11:27:24


<rant> Stupid site, won't work with Netscape 4.7... </rant>

Just in case anyone is wondering, this "Traction-Lok" isn't a Salisbury
diff, the gear pressure angles and the preload spring control the force on
the clutch.  The Dana "Trac Loc" also works like this (but has a different
spring).  Clutches are under the same force for drive and coast (assuming
equal input torques).

The "Salisbury" design does have ramp angles, you change the ramps by
machining, or by putting in different parts that are pre-machined.  The
Salisbury (as you know) can be set to act differently on drive and coast.

David Butter

GPL diff clutches & real life

by David Butter » Thu, 14 Mar 2002 13:14:00


<snip>

Seems to work okay with Netscape 6.2. (Though why anyone would want ot
use 6.2 is another matter...)

--
"After all, a mere thousand yards... such a harmless little knoll,
really" - Raymond Mays on Shelsley Walsh.

The GPL Scrapyard: Back again! http://www.btinternet.com/~gplscrapyard

Uncle Feste

GPL diff clutches & real life

by Uncle Feste » Thu, 14 Mar 2002 13:49:02



>><rant> Stupid site, won't work with Netscape 4.7... </rant>

> <snip>

> Seems to work okay with Netscape 6.2. (Though why anyone would want ot
> use 6.2 is another matter...)

Working with Mozilla 0.9.9 as well.  :-)  Too much Spyware in 6.2.

--

Fester

"Beware the leader who bangs the drums of war in order to whip the
citizenry into a patriotic fervor, for patriotism is indeed a
double-edged sword. It both emboldens the ***, just as it narrows the
mind.  And when the drums of war have reached a fever pitch and the
*** boils with hate and the mind has closed, the leader will have no
need in seizing the rights of the citizenry. Rather, the citizenry,
infused with fear and blinded by patriotism, will offer up all of their
rights unto the leader and gladly so. How do I know? For this is what I
have done. And I am Caesar."   -- Julius Caesar

David Butter

GPL diff clutches & real life

by David Butter » Thu, 14 Mar 2002 22:26:50


Works with Opera 6 and all.

(Spyware in 6.2? Ad-aware didn't find anything.)

--
"After all, a mere thousand yards... such a harmless little knoll,
really" - Raymond Mays on Shelsley Walsh.

The GPL Scrapyard: Back again! http://www.btinternet.com/~gplscrapyard

Uncle Feste

GPL diff clutches & real life

by Uncle Feste » Thu, 14 Mar 2002 22:33:23



>>Working with Mozilla 0.9.9 as well.  :-)  Too much Spyware in 6.2.

> Works with Opera 6 and all.

> (Spyware in 6.2? Ad-aware didn't find anything.)

http://www.racesimcentral.net/

--

Fester

"Beware the leader who bangs the drums of war in order to whip the
citizenry into a patriotic fervor, for patriotism is indeed a
double-edged sword. It both emboldens the ***, just as it narrows the
mind.  And when the drums of war have reached a fever pitch and the
*** boils with hate and the mind has closed, the leader will have no
need in seizing the rights of the citizenry. Rather, the citizenry,
infused with fear and blinded by patriotism, will offer up all of their
rights unto the leader and gladly so. How do I know? For this is what I
have done. And I am Caesar."   -- Julius Caesar

Dave Henri

GPL diff clutches & real life

by Dave Henri » Thu, 14 Mar 2002 23:27:54

"Uncle Fester"

dave henrie

  Beware the leader who is more concerned about fiddling about than minding
the store.  For some being a leader is merely finding ways to insure you are
a leader tomorrow and the next day.  Such leaders ignore the needs of the
country to satisfy the needs of the self.  While Rome was burning with
Barbarians at the Gate, the leader was too pre-occupied to defend his
people..
  I know this to be true because I am William Jefferso....errr.....NERO
yeah that's it...N-E-R-O!

<wink!>

Uncle Feste

GPL diff clutches & real life

by Uncle Feste » Thu, 14 Mar 2002 23:30:02


> "Uncle Fester"

>>"Beware the leader who bangs the drums of war in order to whip the
>>citizenry into a patriotic fervor, for patriotism is indeed a
>>double-edged sword. It both emboldens the ***, just as it narrows the
>>mind.  And when the drums of war have reached a fever pitch and the
>>*** boils with hate and the mind has closed, the leader will have no
>>need in seizing the rights of the citizenry. Rather, the citizenry,
>>infused with fear and blinded by patriotism, will offer up all of their
>>rights unto the leader and gladly so. How do I know? For this is what I
>>have done. And I am Caesar."   -- Julius Caesar

> dave henrie

>   Beware the leader who is more concerned about fiddling about than minding
> the store.  For some being a leader is merely finding ways to insure you are
> a leader tomorrow and the next day.  Such leaders ignore the needs of the
> country to satisfy the needs of the self.  While Rome was burning with
> Barbarians at the Gate, the leader was too pre-occupied to defend his
> people..
>   I know this to be true because I am William Jefferso....errr.....NERO
> yeah that's it...N-E-R-O!

> <wink!>

LOL!!

--

Fester

"Beware the leader who bangs the drums of war in order to whip the
citizenry into a patriotic fervor, for patriotism is indeed a
double-edged sword. It both emboldens the ***, just as it narrows the
mind.  And when the drums of war have reached a fever pitch and the
*** boils with hate and the mind has closed, the leader will have no
need in seizing the rights of the citizenry. Rather, the citizenry,
infused with fear and blinded by patriotism, will offer up all of their
rights unto the leader and gladly so. How do I know? For this is what I
have done. And I am Caesar."   -- Julius Caesar

Jonny Hodgso

GPL diff clutches & real life

by Jonny Hodgso » Fri, 15 Mar 2002 06:25:19


> Interesting article, but I don't think it's quite the same thing.  I
> don't see any ramps in that picture which would actuate the clutches, it
> appears to depend on the preload springs and perhaps the thrust loading
> of the spider gears.  Unless maybe the author just didn't show those
> parts in the pics.  Anyway here is a site which has pics of a diff which
> I think is more similar to what's being simulated in GPL:

> http://icpcitation.com/variloc_theory.htm

> As you can see, this diff has sleeves with ramps that actuate the
> clutches when torque is applied.  The sleeves can be changed to get
> different ramp angles.

Looks almost exactly like the diff whose internals are currently
serving as paperweights on my desk at work ;-), except that the
sleeves have external lugs cast in instead of the pins and grooves
on the one illustrated.

Jonny

Tore Hanso

GPL diff clutches & real life

by Tore Hanso » Sat, 16 Mar 2002 05:22:55

This is an excellent website...but it's still beyond my ability to
understand it 100%. I'm getting closer though.

Tore


> Interesting article, but I don't think it's quite the same thing.  I
> don't see any ramps in that picture which would actuate the clutches, it
> appears to depend on the preload springs and perhaps the thrust loading
> of the spider gears.  Unless maybe the author just didn't show those
> parts in the pics.  Anyway here is a site which has pics of a diff which
> I think is more similar to what's being simulated in GPL:

> http://icpcitation.com/variloc_theory.htm

> As you can see, this diff has sleeves with ramps that actuate the
> clutches when torque is applied.  The sleeves can be changed to get
> different ramp angles.



> >   This is kind of neat.  Here's a tutorial with pictures of modifiying
> the
> > number of clutches on a real differential.  Good thing all we have to
> do is
> > click a button in GPL :0)

> > http://www.modernspeed.net/id79.htm

> > Hmm...  It's gotta be tough to adjust those ramp angles ;-)

> > Todd Wasson
> > ---
> > Performance Simulations
> > Drag Racing and Top Speed Prediction
> > Software
> > http://PerformanceSimulations.Com

> > My little car sim screenshots:
> > http://performancesimulations.com/scnshot4.htm


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