[Fot] TR-4 SVRA Rules Question ~ extra chassis stiffening

[JWoesvra at aol.com]

Triangulation was never a part of the rules. It was not addressed.
 
When roll bars were mandated, the only rule was that it had to meet the  
basic specifications so far as tubing types (seamless) and wall thickness. You  
had to be able to convince whatever tech inspector you met on a  particular day, 
that it was sound and safe.
 
Throughout the sixties, roll bar technology advanced to the point where the  
smarter teams were realizing that a properly braced roll bar also gave the 
whole  car more rigidity. Triangulation was used more extensively, always with 
the  reason being to enhance driver protection.
 
By the late sixties-early seventies, the gloves were off and bars went  
everywhere, still in the guise of driver protection, but strategically placed  for 
platform stiffness.
 
The trade-off of course was added weight.
 
In Vintage Racing, we try to respect time lines, so historically speaking,  
bars to the shock towers are appropriate for cars prepared to about 1970 and  
later.
 
Having said that, we also embrace improved safety enhancements that may  
override period sensitivities from time to time.
 
It is a fine line that you have to judge for yourself. Peer pressure is  also 
a factor. 
 
One solution that I have used is to move such a car to run with a newer  
group (SVRA Group 8 rather than Group 3). You can look them up....
 
In the past, many folks moving into VR from current spec racing have been  
made to cut out offending braces.
 
Each organization deals with it differently.
 
The choice is yours and I respect it either way.
 
Jack  Woehrle
SVRA Technical Director
jwoesvra at aol.com
803-463-5388
FAX  803-794-8747
701 Center Street
West Columbia, SC 29169  

 
In a message dated 10/26/2008 12:39:44 P.M. Eastern Daylight Time,  
jaxonracing at yahoo.com writes:

Jack,
Is that something that was written into the rules back in the day?   If so, 
any idea on when the rules changed to allow for triangulation of the  
suspension to the frame and cage?  Just curious about the evolution of  the rules.
 
Jay  Creel




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