After a thorough read of the SCCA PCS with another scrutineer at
lunch today, I believe a good argument can be made to convert the TR6 to
an a arm type of rear suspension if properly executed with regards to
defending it in a protest. I wouldn't want to bet on the outcome but I
would defend it. I think the prudent racer would have a friend protest
the suspension for a clarification. I stand corrected from my earlier
email. After I got out my Snap-on loophole cutters and the Crafstmen
conclusion jumpers I believe it could be legal but this is just one
scrutineer's opinion. You never know how the stewards will rule.
In Vintage it would certainly not be within the philosophy of any
of the vintage groups I know of. I also think it would most likely weigh
more and be of dimished gain as far as lap times go.
My conclusion would be what is the point of the time and expense. In
a race car we are trying to maintain an optimum tire contact patch and
do it as lightly and as simply as possible. My vote goes to the Lotus
link rear suspension with a live axle. Light, cheap, and hard to get
wrong. I know the unsprung weight is higher but our tracks today are
very smooth which minimizes the IRS advantage.
Greg Lund
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