Good Tech article about the Eaton Trutrac

[TBone]

Check it out....

The Eaton Truetrac LSD and a Road-Raced Fifth Gen Camaro
http://www.lsxtv.com/tech-stories/ea...fth-gen-camaro

I will do a copy/paste later.

T.

[So Cal Camaro]

Interesting...I might need one....

[Nick S]

So is this the same style of differential that the Z/28 uses? I know they call the Z/28 differential a "Helical Gear" differential. And from what I can see in their video this differential is a bunch of helical gears.

Just trying to educate myself a little more here on the differences.

Thanks for posting this link TBone! Very educational and interesting.

[Norm Peterson]

All of the helical gear differentials are pretty similar, with bias ratios and perhaps durability for hard launches being the main differences (some of the Torsens are relatively fragile when subjected to that kind of abuse). There is, or at least was, a version of the Torsen that also included some means of obtaining preload (T2R).


On edit, I think you have to be careful about what sort of lube and particularly additives you use with any of these diffs. If you reduce the friction, or reduce it too far, the diff won't work right. I know I read that about the Quaife diffs somewhere or other.


Norm

[Nick S]

Originally Posted by Norm Peterson

All of the helical gear differentials are pretty similar, with bias ratios and perhaps durability for hard launches being the main differences (some of the Torsens are relatively fragile when subjected to that kind of abuse). There is, or at least was, a version of the Torsen that also included some means of obtaining preload (T2R).


On edit, I think you have to be careful about what sort of lube and particularly additives you use with any of these diffs. If you reduce the friction, or reduce it too far, the diff won't work right. I know I read that about the Quaife diffs somewhere or other.


Norm

There was something in the article text or a sidebar to the article that stated pretty much exactly what you say here. Eaton says not to use any limited slip modifier with this differential and they even say that they recommend good ole regular gear oil as opposed to even synthetics because many of the synthetics can be even too slippery by themselves that they can interfere with proper operation of this differential. One case where more slippery isn't always better!