[kyoo]

So just to confirm,


Front and rear differentials are open, and the center differential is electromagnetic coupling? It's an interesting setup compared to my Evo, which is helical front, 1.5way clutch rear, open center that can lock at varying degrees - but power always is transmitted 50:50 front and rear.


Sounds like the center "diff" in this car transmits power via the lock and is also tied to allowing the front and rear axles to travel at different speeds based on how much lock?


I've read a good chunk of the other threads but they weren't ever 100% clear on the mechanics of it.

 

[Dr. Dyno]

Actually there is no center differential at all. The car is in front wheel drive until the electro-coupler mounted on the rear differential starts transferring partial power to the rear. Less parts = less weight & less mechanical loss.

 

[kyoo]

aha thanks. otherwise the front and rear axles are open diffs?

 

[Dr. Dyno]

aha thanks. otherwise the front and rear axles are open diffs?

Yep, except that TRAC attempt to "lock" the diffs by braking a spinning wheel.

 

[kyoo]

Yep, except that TRAC attempt to "lock" the diffs by braking a spinning wheel.

ahh that's right - e-diffs.