VLSD the myth...

Vlade · Post by **Vlade** » Wed Jan 30, 2008 6:39 am

Eish... He's holding it in his hand babba

veecee · Post by **veecee** » Wed Jan 30, 2008 7:02 am

doesnt look very sealed to me pappa!

Doctor G · Post by **Doctor G** » Wed Jan 30, 2008 7:39 am

I think the car twisting like that has more to do with the fact that the motor is turning in the one direction than anything to do with the lenth of the side shafts.

Picture twisting something like an ice cream stick with your hands. If you hold the one side firm enough and apply some twisting force to it then the side that's less firm (The front - cause the wheels are up in the air) will start twisting in the direction of the force being applied.

I've seen quite a few S15 helical diffs for sale and they aren't that expensive. Not quite as effective as a clutch type but much more streetable and much better than the VLSD.

Vlade · Post by **Vlade** » Wed Jan 30, 2008 9:01 am

veecee wrote:doesnt look very sealed to me pappa!

That thing is sealed dude... Of course it must have place for the side shaft.

Check out this for a better explication of how it works...

http://auto.howstuffworks.com/differential5.htm

veecee · Post by **veecee** » Wed Jan 30, 2008 9:48 pm

"A simple experiment with an egg will help explain the behavior of the viscous coupling. If you set an egg on the kitchen table, the shell and the yolk are both stationary. If you suddenly spin the egg, the shell will be moving at a faster speed than the yolk for a second, but the yolk will quickly catch up. To prove that the yolk is spinning, once you have the egg spinning quickly stop it and then let go -- the egg will start to spin again (unless it is hard boiled). In this experiment, we used the friction between the shell and the yolk to apply force to the yolk, speeding it up. When we stopped the shell, that friction -- between the still-moving yolk and the shell -- applied force to the shell, causing it to speed up. In a viscous coupling, the force is applied between the fluid and the sets of plates in the same way as between the yolk and the shell."

from that link vlade posted.

but i have a VLSD in the rear of my car, not an egg. and its filled with LSX - an oil that has properties that make the viscous LSD work, unlike some other oils.

also - i think you're maybe confusing the part in his has hand with the diff housing itself. the entire diff housing is a sealed unit!???!

Toby · Post by **Toby** » Thu Jan 31, 2008 7:09 am

Give up, Vlade. He'll never believe the story of the sealed viscous coupling

Draco · Post by **Draco** » Thu Jan 31, 2008 8:35 am

Give him and sokar a hammer.....they will un-seal the unit

Gary57 · Post by **Gary57** » Thu Jan 31, 2008 8:38 am

SOMEONE OPEN THEIR DIFF PLEASE.

Sokar · Post by **Sokar** » Thu Jan 31, 2008 9:07 am

Draco wrote:Give him and sokar a hammer.....they will un-seal the unit

Hammers are for Ameteurs, We'll use and Angle Grinder....

Draco · Post by **Draco** » Thu Jan 31, 2008 9:57 am

Sokar wrote:
Draco wrote:Give him and sokar a hammer.....they will un-seal the unit
Hammers are for Ameteurs, We'll use and Angle Grinder....

Puls0nic · Post by **Puls0nic** » Thu Jan 31, 2008 10:01 am

Oh boy that culd be interesting.. using an anglegrinder on a sealed viscous coupling unit.

Take pics guys, I wanna see this