As the topic sais, can somebody explain the differences of these different types of plate LSDs?
Where is the advantage and disadvanteges of these types compared to another?

I could not find any usable articles.

Thanks.

 

http://en.wikipedia.org/wiki/Limited...haracteristics

 

"1-Way, 2-Way, 1.5-Way.......... What Does It Mean?

Some manufacturers make LSD's in different configurations and are commonly classified as 1 way, 2way, and 1.5 way. This designation reflects the design of the cam groove which enables the LSD to function differently under different loads. A 1 way differential means that the cam is shaped in such way as to have positive lock only when accelerating. The 2 way is constructed in a way to have positive lock motion in either acceleration or deceleration. The 1.5 way is a new term used to describe the 2 way cam which enables different lock up rates during the two directional forces. The 1.5 distribute positive lock stronger under acceleration than when decelerating. The 1.5 way can provide more forgiving balance when braking than a full 2 way setup, although it is less effective for true racing applications, it provides easier operation for beginners in throttle off conditions. It is also effective for front drive cars which need extra stability during braking. "

Also from Cusco: http://www.limited-slip.com/acatalog...LSD_Works.html

"Three ways to set your CUSCO limited slip differentials : one way, 1.5 way and two way.

One way L.S.D. specially suited for front wheel drive cars and 4WD car front axles.
Activates under acceleration, and acts as a true LSD when the throttle is off. A great chance for improved lap times.
A CUSCO original design.

1.5 way LSD
Activates under acceleration while the understeer is less than on the 2 way LSD.Recommended for drivers having difficulty with 2 way LSD understeer and one way LSD braking.

Two way LSD
Recommended on the rear axle for rear drive cars. Activates on both acceleration and deceleration. Recommended for those who
prefer hot driving action and big angle drift.

NOTE!
One Limited Slip Differential, Two Ways to Enjoy.
With CUSCO's LSD, you may change the setting during your overhaul with no additional parts required."

And Kaaz LSD's:http://www.limited-slip.com/acatalog...lsd_works.html

"How A KAAZ LSD Works
There has been a lot written and a lot talked about the LSD and its function. KAAZ-SPORTS has been developing Limited Slip Differentials for many many years and over this time they have learned all of the best practices in LSD design and performance. Below explains how LSD works and the benefits using a KAAZ LSD. Much of this has been translated from the Japanese catalogues and also form time that members of Limited-Slip.com have spent with KAAZ Engineers both in the UK and in Japan.

A standard differential in your car is known as a "free" diff. This means that each wheel is free to rotate on its own. Should one wheel spin or go onto a muddy surface all the power is transferred to the wheel in the mud because as it is the easiest route for the transfer of power. The down side of this is that you lose traction and forward momentum. This is not an ideal situation in a competition event as you are looking for forward traction at much as possible.

Inside a KAAZ limited slip differential or LSD are a combination of special flexible plates and a pin in-between them. Then as the car accelerates the pin is pushed between the plates moving them out and in turn "locking the diff" With a diff locked if a wheel go onto a muddy surface then the plates work to put the power to the wheel that is not slipping.
Also when you decelerate the pin moves to a new position and again presses the plates to give you good control under braking.

There are two options from KAAZ on the type of LSD.

For a rear wheel drive car the best option is a 2 Way LSD

In a rear wheel drive car on acceleration and cornering the pin pushes the plates out and locks the diff giving good traction to both wheels. Then should one wheel spin the power will be transferred to the wheel that is not spinning. Should both wheels spin under very hard acceleration say when performing wheel spin start or performing a doughnut or drifting the car then power is distributed equally to both wheels.

With all this going on inside the KAAZ LSD you are able to perform these driving enjoyments.

The car is more stable going into a corner and you fill find you have faster exiting speeds. On some applications a 1.5 Way KAAZ LSD is also an option

For a front wheel drive car the best option is a KAAZ 1.5 Way LSD
Just like the KAAZ 2 Way LSD upon acceleration the pin moves the plates out and locks the diff and in turn limits the wheel spin or slip. But upon deceleration the pin moves to a new position but only applies ½ the force as if it applied the full force the car would be unstable under braking and deceleration.

When acceleration around a corner you will "feel" the diff working for you and through the steering wheel you will feel the diff pulling you around the corner. This can be a strange feeling, but you will find that you also now have much higher exiting speeds.

As well as 1.5 and 2 way KAAZ LSD, KAAZ also offer the KAAZ Solid Type. The KAAZ Solid Type uses RS plates and offer a much better reaction time when a LSD "Locks" up. Take some time to read about the KAAZ Solid Type LSD. "

I use OEM Torsen, so no experience with clutch type LSD's for me.

 

Goes with this picture for Cusco LSD's, where they all act pretty much the same way under acceleration, but have varying amounts of force that expand the pressure ring under deceleration:

(see better details here: http://www.cusco.co.jp/en/pdf/p27_p29.pdf)

(and a good diagram on effect of different ramp angles here: http://www.cusco.co.jp/en/catalog/hy...djust_lsd.html)