> those two statements suggest that you see the VC as a limit slip for the
> front differential.
> If so, ,
> I belive you are incorrect there buddy.
>
> The VC is not a differential between the two front axles.
> it is a 'limited slip or grab device" �between front and �rear axles and
> differentials.
>
> people get nutty when I say the VC is a front-rear 'differential' as it's
> not a differential in the usual sense ........like ones in a front or rear
> diffs that provides and controls distribution to the axles on either side of
> whichever diff.
>
> but it does allow 'slip' when needed, front to rear, and gives 'grab' when
> needed.
>
> In AWD cars there is need for some sort of give or slip or differentiaing in
> 3 places, rear, front, and front-to-rear.
> that is because, on pavement, when a car goes around a corner, all four
> wheels travel a different distance.
>
> this is why you feel binding on a 4WD ( not AWD ) vehicle on pavement when
> it's in 4WD - there's no give or slip front to rear.
> True AWD vehciels need 'some slip, and grab when desired' front to rear ,
> which the VC does.
>
> the VC has nothing to do with controling the axles of the front diff.
> It would need to have a locker there, or an LSD - otherwise a syncro front
> differential is a normal 'open' differential.
> scott

Aha, OK. I've never looked under a Syncro. So the VC here is acting
merely as a hydraulic clutch.

In other applications a VC (or pair thereof) can be used as a
differential; it sends drive differentially (hence the name
"differential") to the front wheels, say, of a Nissan Pulsar. In this
case the VC is transverse.

-- 
Regards
Andrew Grebneff
Dunedin
New Zealand
Fossil preparator
Mollusc, Toyota & VW van fan