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Originally Posted by sperry
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Originally Posted by Dean
This complexity is probably why none of the manufacturers I am aware of ship an AWD car with three LSDs, and IIRC I am only aware of one Audi that I beieve had a front LSD, and an open rear. I realize this didn't help much, but it is a really complex question.
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Except the STi and EVO... and probably a butt load of 4WD trucks. |
See, it didn't even take Gary...
I'll go out on a limb again and claim that most if not all the 4WDs are either open, or "locker" fronts, not LSD.
Now the STI, and EVO RS have Helical Limited Slip Differential fronts, and Mechanical rears. The normal EVO has an open front by the way.
I need to do more research to understand the Helical LSD. I am more familiar with the straight mechanicals, and torsionals on the Audis... My guess is that on the Helicals, there needs to be significant wheel spin prior to power transfer.
I stick with my earlier assertion... Front LSDs are a huge challenge due to there impact on steering. There are very few situations where you want to compromise front steering in favor of front power...