While it would SEEM that shimming the T-L tighter would necissarily increase grip...
And it does increase "preload"... but preload doesn't mean "grip"
You need to understand that the spring and preload aren't the prime motivator
of generating that grip.
If you look at the shape of the axle & spider pinion gears you'll notice that the teeth are curved, it is the relationship of the curved gear faces that create a camming action.
What literally happens under load is that the preload creates a little resistance and that cause s the curved teeth to try to wedge themselves away from each other and add additional crush to the friction discs.
If you shim it TOO tight the unit will seem "tighter" under light load, but under
heavy load will actually not grip as well
Thus my previous comments that engineering specs that specify torque bias are whistling inside a tornado.... because their figuires are based on facts that in the
real world can only be guessed at...
as traction an wear (and torque applied by your right foot) vary so does the potential grip of the clutches.
They work.
Some will say that lockers work better...
I'll say that either limited slips or lockers try to make both driving wheels on an axle turn together.
but there are imes when both wheels turning won't do shit.
I've personally had a NON-"high centered" 4x4 completely stuck on more or less "level ground" with locked diffs at both ends....
How? Ice cqn be very unforgiving and all the torque you put to your tires won't do shit if the tires won't grab.
this is why I own chains
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