Ford Secrets

the torsen uses friction plates and can wear out



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the true trac uses no friction plates and design is nothing like a torsen


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Eaton makes True Trac and Torsen makes torsen.

Just to be a smart arse


Torsen was made by Gleason (which is also one of the biggest gear tooth cutting tool mfgs) and bought by Zexel and now owned by JTEKT aka Koyo bearings.

But yea, Eaton=Trutrac Gleason/Zexel/JTEKT=Torsen
 
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Just to be a smart arse


Torsen was made by Gleason (which is also one of the biggest gear tooth cutting tool mfgs) and bought by Zexel and now owned by JTEKT aka Koyo bearings.

But yea, Eaton=Trutrac Gleason/Zexel/JTEKT=Torsen

yup....goodyear and dunlop both make tires but they are not the same either
 
Let's settle on the phrase "yes, they do use a torque sensing differential of any manufacturer" which they already did since the first F150 Raptor.
As long as there is some resistance on the slipping wheel the differential sends the torque to the wheel with more grip, which worked great for a couple of decades now in all kind of vehicles. As soon as you lift one wheel completely the torque sensing diff cannot distribute the torque to the other side, that's when the electronics kick in and give the spinning wheel a short shot at the brake and stops it from spinning free. The resulting effect is that the torque is then distributed to the wheel with grip. This works very well in my experience.
If you get a chance, test drive an Audi Quattro with torsen-type diffs in all 3 diffs on the snow. This thing manouvers like it's on rails.
 
It looks like it may have a standard Eaton type limited slip in front, but in "off Road mode" the computer brakes a spinning wheel. That would greatly extend the life of clutch style a front limited slip.

Back when trucks had 350 lb-ft of torque, manufactures didn't worry so much about stuff like burning up the front limited slip under warranty.
 
The factory GM 7.625 did not apply power in a 50/50 ratio to each wheel. And the factory Torsen in a Miata is the same. Does a TrueTrac apply power evenly?

The 7.625 Torsen we have always has done something that is very odd that I never understood. When on ice, implying zero traction - one wheel spins and the car would not move anywhere without someone pushing. But on dry pavement it would leave tire marks of equal distance. I never got my mind wrapped around why it operated in this manner on ice. Any ideas?
 
The factory GM 7.625 did not apply power in a 50/50 ratio to each wheel. And the factory Torsen in a Miata is the same. Does a TrueTrac apply power evenly?

The 7.625 Torsen we have always has done something that is very odd that I never understood. When on ice, implying zero traction - one wheel spins and the car would not move anywhere without someone pushing. But on dry pavement it would leave tire marks of equal distance. I never got my mind wrapped around why it operated in this manner on ice. Any ideas?

My son has to move a few RV trailers around that he has in for repairs and the ground is really soggy so I'll be watching to see what the front wheels are doing. Using brakes to put power to the freeloading wheel is an old trick with rwd cars when stuck, put the parking brake on partially and the freeloading wheel was supposed to help you get out...
 

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