Rearaxle diff function , HOW do it work?

[Tiny]

HOW does the rearaxle work in the syncro?
I have the general function in my head I THINK []
NOT talking about the visco , its the differential am on about.

The reardiff is the “open” typ right?
Then there is nothing stopping the car from “onewheeling” when lifted?

Should BOTH the backwheels spinn when visco is engaged?

I Know there is the Pelequin diffs to buy.
They are of the “Torsen” type.

Just straightening out some questionmarks here.
Posted in here and in the non Rallyesection.

[Tiny]

Hmm , no answere.
Then i have to do it myself.

The rear diff is a regular “open” diff.
Just like any normal car that drives the rearwheels.
So with no “breaking” by a diff the power gets to the wheel by the open diff.

[Chris S]

Yes its an open diff.

yes both wheels will spin as it takes less effort to spin the other wheel than turning the VC unit.

& by the way a reply within 48 hours is good, there are only a few members with the knowledge to reply & we all have other things to do as well as being on here.

[Tiny]

Ok , well sorry then for the inconvenience.
I may have other things to do to but i am not rude anyways []
I understand that people have other things to do.
I just answered my self and the thred here.

Anyways.
Hops its ok with questions and some info.
Well with an open diff there is not for surtain that both wheels will turn at the same time. The power will go to the wheel with least resitance.

When asked the question to the local VW workshop the answer was the same. They ran some Rallyes at the time that it was racing. The boss there raced for the Audi Sweden team and both works Lancia and Toyota in rallying(). The shame is that he could not get the exact info from data and paperprints. Thats why i ask here to.

Its not unusual that only one wheel will turn IF the rearaxle is lifted and no wheel has any resistance.

I will have to try both the VR6 and the Jetta i think.

[Tiny]

Now i have tested the visco just like the test says.
Lifted the front and got going , the visco engaged and the car got going forward.

Soo the visco seams to work just fine.
Could not test the reardiff in the axle.
Too much grip and too little power with only 98hp.
Even on mudd the car just spun the fronts then gripped and away.
Need to try on really wet grass to get the slide on []

[Chris S]

The VC unit should react within 1/2 a turn of a front wheel spinning.

[Housey]

both the front and rear diff is open on these cars. you can buy LSD’s for both the front and rear diff (02C atleast)

the syncro system is hard if not impossible to skid around in on tarmac or gravel. works best on snow.

more power is always good for doing crap like that

the vwms golf rallyes have a different setup then the roadcars

[philb115]

As Housey says, even on gravel / wet grass / just-rained-after-a-hot-spell-greasy roads you’re unlikely to spin the wheels… Mine is standard (though with a GTI head) and will only spin all four wheels in snow…

[Author]

Posts