[torsen] Re:Torsen Boy dusts off cape
QSHIPQ at aol.com
QSHIPQ at aol.com
Fri Apr 15 09:10:13 EDT 2005
EDL is triggered from the abs sensors which are located to the outside of
the broken CV joint. At the corner with the broken CV, the brake caliper *was
not* clamped "nice and tight", in fact, EDL wasn't even engaged. Why?
Because Torsen and EDL are driveshaft torque and wheel spin devices respectively.
You had zero driveshaft torque to the front axle (so 0*TBR = 0),
subsequently you can't have wheelspin without torque, so EDL intervention is non
existent. More simply, the Torsen must be at maximum TBR before EDL intervenes.
Yes Paul, a locker center would have allowed you to drive home, but with
caveat. BTDT with a broken front axle on my 83 urq at Steamboat 2 years ago.
It wasn't quite so simple to just lock the center. I had to remove the inner
driveshaft first, since the radially unchecked font axle bounced around and
wound up the rubber brake line.
Scott "TB" Justusson
In a message dated 4/15/2005 12:17:32 A.M. Central Daylight Time,
rletsinger at gmail.com writes:
Not an expert, but...
The torque-sensing differential is a torque multiplier. If you're
getting twice as much grip at one end of the car than another, it'll
give that end twice as much power. However, if you multiply anything
by zero, you get zero. So, if you're getting no grip at one end of
the car, no amount of multiplying is going to give you any grip.
This is one way that viscous coupled or clutch type limited slip
differentials are better. But clutches wear out and viscous diffs
have a delay associated, so torsen is still better in other ways.
As for EDL helping you, the brake caliper was probably clamped nice
and tight on the corner where the joint broke. But, that wasn't
helping you much because the rotor is outside of the joint just like
the tires are.
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