Originally Posted by TouringBubble

We're talking about the center diff that splits load between the front and rear .. not side to side. I think what most people are saying is that the center diff is always splitting torque 50/50 (front/rear) and then the LSDs in the front and rear are taking care of the rest.

So, how I'm understanding this ...

There is 100% torque available. 50% in the front and 50% in the rear. No matter how you split it between the left and right, the torque on either the front or rear will always be 50% of the total.

So the 4 corners would effectively be:

25 - 25 (F)
25 - 25 (R)

or possibly when cornering ...

35 - 15 (F)
30 - 20 (R)

or maybe this with ice on the left and tarmac on the right ...

10 - 40 (F)
05 - 45 (R)

Either way, you still get 50% when you do the math.

Originally Posted by zbomb

Just found this. Bozz performance has a little info. http://www.bozzperformance.com/cusco_lsd.htm

Originally Posted by EVOlutionary

Thank you - excellent info. This confirms what I had always believed true about the enigma that is the 35:65 tarmac gear - it is not an LSD but rather just an open differential. I will contact them to see if they can get me some more info on the clamping force of the Cusco front and rear LSDs.

As for the rest of you - please read the title of this thread. This is not the place to argue over how or why the LSDs do what they do. If you want to discuss that, go here, read everything first, and if you still have something to add feel free.

https://www.evolutionm.net/forums/sh...d.php?t=175195

Now, back on topic - anyone have any 1st hand experience with the Cusco units??

EVOlutionary

Originally Posted by honda-guy

no, font/rear split is not always 50/50. if it's always 50/50 than you don't need a center diff. font wheels and rear wheels travel at different speed when you turn (front of car travel on larger arc than rear wheels, that means longer distance), that's why you need a center diff. if a center diff is always 50/50, then the car will not run properly. Take a ride in a car with a welded center diff and see what happen when you turn the car sharply in a parking lot, the rear wheels will hop. It’s ok in a drag race when you go straight but it’s not good on a road coarse when there are turns involved.

Originally Posted by EVOlutionary

Thank you - excellent info. This confirms what I had always believed true about the enigma that is the 35:65 tarmac gear - it is not an LSD but rather just an open differential. I will contact them to see if they can get me some more info on the clamping force of the Cusco front and rear LSDs.

As for the rest of you - please read the title of this thread. This is not the place to argue over how or why the LSDs do what they do. If you want to discuss that, go here, read everything first, and if you still have something to add feel free.

https://www.evolutionm.net/forums/sh...d.php?t=175195

Now, back on topic - anyone have any 1st hand experience with the Cusco units??

EVOlutionary

Originally Posted by FatheroftheEVO

DUDE! this is the advanced forum. DO NOT POST INCORRECT INFO.

torque split is UNRELATED to the speed variations of the front vs the rear. if a diff is split 50/50, its 50/50 permanantly. even the ACD diff is a 50/50 split permanently, all the ACD does is control how fast the "LSD" locks up. It does not matter what speed, angle of turn in, ect.

go polish up on your knowlege please, stop posting incorrect info and arguing in the advanced information forum. thanks

Originally Posted by honda-guy

I don’t want to a ***** but what makes you the guru of differential and LSD? Do you work at Cusco or Kaaz? Only a fully locked diff can distribute 50/50 (like ACD when in lock mode). A LSD (Limited Slip Differential, eg. clutch pack, helical or viscous coupling) is not fully locked, so it can’t distribute and even 50/50. More torque is going to go towards the wheel with less traction.

That’s all I have to say on this topic, I’m not going to argue an more.

Originally Posted by kekek

So basically the Cusco 35/65 center should not change your car too much since the OEM center is open also. That diff doesn't replace the VCU or ACD. If you replace the VCU or ACD then you will see (from what I understand) a drastic change in how your car distributes power and behaves. If you don't have a front LSD then having one of these isn't gonna help too much.

John

Originally Posted by nightwalker

I don't see anything on the sites posted about a center diff. Does Cusco even make a center diff? all the diffs listed are fronts and rears.