Increasing front roll stiffness primarily creates two different events. The
end result is the
combined effect of these two events.
The first is to reduce body roll. This is a good thing. When the body rolls
over, this rolls the
wheels over, which is never good for handling as the sidewalls of a tire aren't
noted for doing
good things on the pavement. So reducing body roll is good as it keeps the
tires more upright, and
this promotes better handling, typically reducing understeer.
The second thing is to increase the load on the front tires. This is not a
good thing. This
increased of loading more rapidly overloads the tires, causing them to slide,
or understeer. This
is not a good thing.
In the case of the Spitfire, particularly with the swing spring, the net effect
of a stiffer front
rollbar is better handling. The car stays flatter, maximizing the first point
above. As there is
virtually no roll resistance in the rear, you are not particularly increasing
it in the front, the
front is already taking it. So you net out with better handling. That's why
this setup is
virtually universal on all racing Spitfires, it works.
If you do not reinforce the frame tabs and the a-arms where the swaybar mounts,
you will rapidly
find cracking and then complete failure at all four points.
------- Original Message -------
>From : Larry Vaughan[mailto:ljvaughan@pldi.net]
Sent : 12/27/2007 4:13:33 PM
To : spitfires@autox.team.net
Cc :
Subject : RE: [Spits] Front swaybar
Someone on ebay is selling 1" front swaybars. The first went for $127.
Starting price $99. One of these on a stock swingspring Spitfire would
cause what? Understeer?
Larry
Spitfires@autox.team.net
http://autox.team.net/mailman/listinfo/spitfires
http://www.team.net/archive
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