Roll Cage

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Surprisingly enough the roll cage structure with the addition of three supports is the one that I designed way back when, then had Art Morrison in Fyfe, Washington bend up for me. It has stayed pretty much per design. I used CADRE, an aold structural design package I found on the net to veify my strength in design. There are times and places where I wished someone else had welded some of the joints for me, but I did it all. If it fails, nobody but me to blame. Has everyone heard the TIG story? Well here it is again... " At the time I lived in Madison, Alabama, which in the summer can be both hot and humid. Like a 95 temp and 95 RH. Miserable. But here I was, laying flat on my back in the driver's location sweat to my elbos, Tig pedal under my right foot. All jammed together. I was tacking the various bits together when as I was working overhead I managed to get the electrode of the torch stuck to the filler rod. All the while my foot is on the pedal and the high frequency is ON. Then, in my thrashing about, I managed to become part of the ground path, my left boob that is. I touched the filler rod just under the nipple and HOLY SHIT! I exploded out of the car! TIG bits and pieces flying everywhere..helmet, torch, pedal, me! The wife came to see if I was dead and she gingerly with a finger and thumb picked up the torch and layed it aside. Was Funny afterwards. Not during. I managed to get a bruise about the size of a silver dollar later. I think I applied at several hospital to be the paddle operator in a critical heart restart event. I KNOW HOW.


Rear View of Roll Cage
There are only a couple of things to point out in this photo and those are the lateral gusstes to keep the cage structure from collapsing sideways and the feed through holes in the trunk firewall. The firewall feed throughs and water line fittings fill these and a couple more holes. The gussets are 4 inches wide and are 1/8 inch steel plate stitched welded on per the rule book.

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Driver's Cage
This view shows where the driver lives. It also shows a great deal of the construction of the roll cage itself. By my calculations, using catalog pix as reference, this is an 13 point cage. I believe it to be pretty solid and reasonably well triangulated. It is pretty wide it the top because I sti high in this car and it had to fit my shoulders. I made a mistake when I ordered the seat and when I got the side rails welded in, it would not fit. Being the cheapskate I am, I made a seat mount that allowed it to fit but made me sit much higher. This is one of the things that will be changed in the future. I'll either cut the seat down or build a new one and cut the top part of the roll cage loose and shorten it up and maybe narrow it a tad also. Wind resistance don'tcha know... I welded in 1 inch diameter helmet bars to keep my brain bucket inside in the event of an upset. In the center of where the seat goes you can just see the shoulder harness attachment. And above that the seat attachment, one of 6. Every cage joint is made to the frame directly with the exception of the dash hoop: it is welded to 6" by 6" by 1/8 inch plate formed and welded to the original frame parts and body panels. This was a unibody car with a half assed frame under it to begin with. I should mention that every joint is TIG welded and I am a fair Tig welder when it comes to "arn an steel". I suck at aluminum.

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Roll Cage Gussets
Our final photo in this series is of the other side of the cage structure. Just mainly to better show gussets. Oh! There are three tabs on the cross bar for location of the fire bottle cradle mount. Which is now installed. Which needs to be removed and modified because I am using a different fire bottle than planned. On the front suspension frame horns which connect to the dash hoop I also welded in some serious gussets to prevent flex un the front end. I added a couple of braces at the fire wall location from the frame horns to the square tube main frame rails for strength. I think it is good to go, but what do I know?


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