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Re: Torsen + EDL
>To the computer, the rear driveshaft is spinning faster than the
>front, so does EDL interpret that as the rears with more traction
>and slow the front (IMO), or does EDL interpret that as slip angle?
>How's it do the latter?
You didn't understand my statement. Let's try again.
I _think_ (somebody correct me if I'm wrong) that EDL works as
two separate systems: one front EDL, and one rear EDL. All it sees
is differences between left and right wheel speed at one end of the
car (front or rear). If EDL was looking at the bigger picture (trying
to balance wheel speeds left to right, front to rear, and corner to
corner) then there would be no need for the TORSEN center. It
would be redundant.
>By the same definition of a torsen center, as soon asyou turn, slip
>angle to the torsen becomes a variable. INTERPRETED as a
>traction. That's the problem. 4 Wheel EDL doesn't change that.
Maybe not, but 2 wheel EDL will affect which wheel on the front
gets the torque and which one on the back gets torque. By effectively
locking the front and/or rear diffs when spin-up occurs, EDL
definitely changes how the TORSEN reacts in your "bite" scenario. I
realize you wanted to hold off on the EDL discussion until the gen II
was sorted out, so we don't have to go any further into this. I'd still
like to know what Boris does when the rear diff is locked on the
gen II, though.
BTW, as for the TORSEN extrapolating traction from driveshaft
speed, I'm not convinced. The Gleason tech paper seems to imply
that it's reacting to frictional resistance rather than speed
differences. I could be wrong, though. Maybe one of our MEs
should have a chat with them?
'90 CQ 20V - my 'racing-iron' ;^)