Classic - Limited Slip Diff?
#4
On a UK car the front diff is open, and the centre and rear are viscous coupled. All three are conventional bevel gear designs.
#5
As the shafts rotate at the same speed and the plates turn through the silicone, then the torque is sent to either end/side at a ratio of 1:1, as they're in equilbreum.
As soon as there's any speed differential between the shafts (i.e. one end's or side's wheels slipping), then the plates attached to the shaft turning faster shear through the fluid, raising its temp, thus changing its state to anything from between 'fully fluid', and 'fully solid' and partially locking, or fully locking, with the slower spinning shaft. This allows the torque to be sent to the, initial, slower spinning shaft's end - what percent, is dependent on the speed differential. It's this fluid's ability to be in a state between fluid and solid that allows the cente VC to, effectively, deliver anything between 50-100% of the torque to the front or rear (or 25%-100% to either rear wheel in the case of the rear VC).
I apologise if this is not the case, but that's how I understood the internal workings of the VC.
Last edited by joz8968; 03 February 2010 at 11:43 PM.
#6
In each of those units there is a conventional bevel gear diff [B]andand a viscous coupling. The diff does what every differential does and then the VC provides the limited slip qualities.
I apologise if this is not the case, but that's how I understood the internal workings of the VC.
#7
Yes of course! Because if there was no 'conventional' bevel gear IN ADDITON, then when at equilibreum with the fluid only, there'd be no way of connecting one shaft to the other! lol What an oversight.
Yeah, I was basing it on the compact centre diff as fitted to Integrales.
Yeah, I was basing it on the compact centre diff as fitted to Integrales.
Last edited by joz8968; 03 February 2010 at 11:54 PM.
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#9
They'd have to be like tractor- or skateboard-sized rolling circumfereces at one end for that to become in issue! (an exaggeration, but you get the idea). TBH, I don't know what difference in RC front to rear would there have to be for tranny wind-up to occur? 1", 2", 5", 1'...?!!!
Why would you want to ask that question anyway? The system's been designed to be 'correct' from the outest, when the same size tyres are fitted front and rear!
Or are you after that 70's Carlos Fandango big-tyred, jacked up rear.... small front-wheeled, nose-down, look?!...
Why would you want to ask that question anyway? The system's been designed to be 'correct' from the outest, when the same size tyres are fitted front and rear!
Or are you after that 70's Carlos Fandango big-tyred, jacked up rear.... small front-wheeled, nose-down, look?!...
Last edited by joz8968; 04 February 2010 at 12:56 AM.
#10
Yes it was a bad use of the term in hindsight what I meant was not 'electronic' but 'open'.
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