full size quaife atb limited slip is the same design internally as the torsen diff in 1.8 scale. limited slip diff in an escort rs turbo was a viscous gear diff, basically a fluid filled gear diff like we now use. ball diff has limited slip qualities as the more torque you apply to them the more resistance to differential action, really we just havent got the older plated style lsd's, they would be too stiff for anything but a front diff in a tc. have experimented with different types of diff, made a ramp plated ball diff and tried it, made car a bit inconsistent as the handling changed as it locked up when power was applied, also tried to make a 1/10 magnetic diff like some 1/5 scalers use but there just wasnt enough space to make it work.
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