Some comments.
Having a short font shaft compared to a long rear shaft doesn't effect power transfer.
Yes its done with the original FS slipper setup, very similar like the XX4 duel slipper.
But a slipper will only limit torque applied to the wheels. Its doesnt matter how much grip the tyre gets. When it hits a certain level the slipper gives in.
On tracks with vering levels of grip this becomes a problem.
A diff keeps the torque the same at the front and rear. They might be doing differnet RPM , but the diff will try to kee the torque level the same. Equals a balanced car!
So if the grip level is high. The car will squat rear ward, the rear will untimately have more traction so the front wheels will loose traction first. But this has happened at the point of maximum traction available, not the level on torque the slipper is set to. This means the car will start to understeer under hard acceleration, not step the rear out, it makes it very easy to drive.
If the grip level is low, the front wheels will spin earlier, still providing understeer on corner exits, and not over steer.
Why is it different to a normal ball diff?
Unlike dropping in a standard ball diff, which is very light in its action, (would cause the front wheels to spin like crazy), the diff has no thrust bearings, just like the FS slipper, so you can adjust the diff action, from very light-to very stiff, just like changing the oil in a 1/8 gear diff.
Why I think its better than a slipper unit? Its seems better when on track with inconsistant grip levels. From loose dirt to sections of astro turf.
Has the drivability of a loose slipper in the low traction sections.
Has the direct drive acceleration of a tight slipper on high traction sections.
Brad
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