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Re: New roll bar concept

To: intrepid@gol.com, owner-tigers@triumph.cs.utah.edu
Subject: Re: New roll bar concept
From: STUART_BRENNAN@HP-Andover-om3.om.hp.com
Date: Thu, 1 Aug 96 07:26:27 -0600
     Ed:
     
     What's wrong with this design?  The floor is not strong enough there 
     to support much of anything.  The windshield frame is not strong 
     enough to keep the columns from folding in on you as the car rolls.  
     You really need a complete inverted "U" shape for stiffness.  A 
     Diagonal brace would help stop it from "parallelograming", and some 
     additional bracing has to control fore/aft motion.  All of this is 
     better behind you, rather than in front.
     
     You have to be able to support a lot more that 2X to 3X car weight 
     when you start bouncing around.  That bar would still be real close to 
     your head, so you could whack it in a frontal crash, even with 
     shoulder belts. 
     
     There may be some good points.  Additional chassis stiffness could be 
     gained by welding  the doors shut, since entry with these tubes in 
     place would probably be easier with the doors closed, in the 
     traditional sportscar manner.
     
     Stu


______________________________ Reply Separator _________________________________
Subject: New roll bar concept
     
     
     >>>>>>
     
How about mounting two vertical bars (which would act as columns) from the floor
to each of the upper corners of the front window frame?  Each bar would have a 
flange at the top which would be bolted to the upper window frame and of course 
a flange for mounting at the floor near the sill.  In this configuration, the 
bars could be sized to withstand 2 or 3x the we
>>>>>>>>>>>


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