Question about differential, Pass roll bar.

[db replicas]

Originally Posted by Ronbo

I'm somewhat bewildered on how exactly the limited slip diff. works in the Kirkham.

The original Jag rear worked like the corvette in that a solid half shaft was required to apply forces to dis-engage the clutch packs to allow one of the wheels to spin at a different rate in a turn. (these were essentially the same carriers used in solid axle rears)

Since the dual A-arm requires a slip type shaft, how is the diff. activated? Or worse is it activated at all? Spools are mighty rough on tires in street cars.

Hi.
It works the same way, instead of the forces running along a solid half shaft to resist the twisting forces the half shafts transfer this force to the output flanges on the sides of the diff. The clutches inside are somewhat like motorcycle clutches, which are "Almost" fully locked together, when enough strain (Like turning a corner) is applied they allow some slippage.
It is quite easy to adjust the pre poad on these clutches, either by using different spring washers or re packing the plates in a different order. A little like... If the clutch is too stiff and the plates are packed + - + - + - then re pack them + - - + + -. This would in effect reduce the grip by 40%.