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Re: Weight and Balance stuff again

To: land-speed@autox.team.net
Subject: Re: Weight and Balance stuff again
From: John Goodman <ggl205@yahoo.com>
Date: Sat, 14 Jun 2003 17:27:50 -0700 (PDT)
"The center of mass behind the center of gravity."

Amen but not too far behind CG. Your statement above
goes to the heart of my comment on CG intersect with
CA. It may have been better for me to reference center
of mass rather than centroid axis. The two are so very
similar, I tend to use them interchangably.  I am not
a big fan of adding weight unless the rules forbid
aero devices. Weight is such a big penalty, even at
Bonneville. Simple, yet effective aero devices offer
downforce or generate negative lift in areas you
require it and at very low drag. The trick is feeding
these devices air properly. 

John
--- "Thomas E. Bryant" <saltracer@awwwsome.com> wrote:
> John,
> 
> The simple answer, from my point of view, is if you
> add weight to the 
> rear for traction, (Conventional wisdom of old), it
> works great unless 
> you spin the tires. If it still spins the tires the
> rear will want to 
> lead. It has been proven by several that a balanced
> car handles. The 
> rule I will live by, which came at great expense and
> experience, is: The 
> center of mass behind the center of gravity.
> 
> After adjusting the car to the above, I made a check
> out run with the 
> tires spinning for over a mile on a loose course,
> after hitting the 
> nitrous, and it moved about on the course, but at no
> time did it seem 
> uncomfortable. The front wanted to lead.
> 
> Tom, Redding CA - #216 D/GCC


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