why's that?

 

It's been a while since I researched, and I honestly can't remember, since I haven't had a need to swap LOL
I want to say it had to do with how they lock.

 

lmk if it strikes you. ppl seem to be having success with it on track.

 

Gear types don't have the harsh engagement you get with a clutch type so it doesn't disrupt the drivetrain as much but they're also not adjustable (well actually Wavetracs are). But clutch types are also more predictable in their nature than gear types because of their locking behaviors.

 

i feel like with the 1-ways what i'm looking for is that improved off-throttle turn-in, while still being able to lock up hard on throttle. i guess the speed at which it locks up could be harsh, but i dont know if that would necessarily upset the balance of the car. cuscos do tend to be a little aggressive in the speed at which they lock up, but looks like the front has 35 or 45 degree ramps (my rear had 55 degree, pretty much was locked as soon as u were on the throttle)

 

Well helicals are what's called torque biasing so they're always putting torque to both wheels, so in a sense they behave similar to a 1.5 way clutch type in their operation but the amount of lockup is dependent upon how the gears are machined and the helix that the teeth have (similar to ramp angles on a clutch type) so it's possible to set them up to have very little locking on decel.

As to how a clutch type locks will depend mostly on the ramp angles, clutch configuration and how thick the clutches are as well if there are any other components like springs that aid in locking. The real advantages of the clutch type are that they can be adjusted for when lockup starts, how fast it goes from initial lockup to full lockup, and how far it can actually lock.

Here's a decent article from Cusco actually that does a good job of explaining some of this: http://lsd.cuscousainc.com/cusco-lsd-guidebook/

 

Assuming you don't mind pulling things apart as buying lots of fluids, on the regular, in order to make adjustments?

 

It's pretty much a set it and forget it deal. Adjust it til it's where you want it and then don't worry about it again. And assuming it's set up by someone competent you won't need to ever pull it.

 

But you gotta R&R to get it where you want. Hopefully it's good the first time!

 

Still better than not being able to adjust it all...

 

i just set it on max and leave it ive found hahaha

 

main difference is that the clutch type diffs lock even with one wheel in the air, while the helical diffs will act as an open diff when one wheel goes up in the air..

 

That's the entire selling point to the wavetrac. They use friction pads that still allow torque to transfer to the wheel on the ground even when one is lifted.

 

sounds like honda s2000 diff..

 

And S2000 is very very capable track-day/track car in OEM form with that (Torsen with diff (perhaps rear toe arms off second-gen F22C car to minimize toe-change).

And many many Porsches use Wavetrac- RWD.

S2K and Miata with Torsen do seem to benefit from OS GIken rear LSD.
But that does not mean that the same should be expected from the front LSD on Evo, or that Evo plated RS will be so inferior to OS Giken.