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RE: Traction Control

To: "'Waldron, James'" <James.Waldron@CWUSA.COM>,
Subject: RE: Traction Control
From: "Clay, Dale" <Dale.Clay@mdhelicopters.com>
Date: Wed, 26 Jun 2002 08:30:09 -0700
At the Long Beach GP this year one of the cars spun coming out of a corner
and smacked the wall.  When interviewed (don't recall now who) the driver
said it was caused by failure of the traction control.  He said he normally
used full throttle there and the TC would take care of the rest, not that
time though!

Dale C.
                
                Subject:        RE: Traction Control


                Then again, if you're going rickety split and you jerk the
                steering to one side, all the rev reduction in the world
                probably won't help.  But if you were negotiating a constant
                curve it would be very seductive to just floor it and let
                the computer walk you up to the knife edge.
                Makes the accelerometer rev limiter combination sound
                plausible.  In the turn, keep allowing a little more and a
                little more rev to create a little more and a little more G
                until you either start to lose G (sliding starts) or the
                pucker factor lightens your foot.

                Scary part is that if you are right on the edge, one blip
                and it's gone.  Now if you are 'driving' at that point, you
                may be on top of it enough to save it.  If you are just a
                'passenger', you may not be able to get it together fast
                enough.  My experience with racing tires is that they stick
                great up to a point, and then break away fast.  Once
                traction is lost, I have found it 'very' difficult to re-
                match a racing tire to the surface (regain traction).
                Street tires seem to be much more forgiving and much easier
                to get 're-stuck'.

                Comments or other experiences?

                Jim.

                

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