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 [2] Here’s the completed jig,...  [2] Here’s the completed jig, with the lateral movement structure tube locations also in place. This prevents the helmet exiting the outer plane of the rollcage.  [3] When the tubing arrived...  [3] When the tubing arrived from Art Morrison Enterprises, the package included this drawing, denoting the location of each (marked) piece of tubing. A separate drawing of the tube, showing the lengths and angle of bends, was also supplied for my reference.  [4] The “Funny Car” cage as...  [4] The “Funny Car” cage as supplied. Not only did this save me a heap of time bending tubing, but each one fit perfectly once cut to length and notched.  [5] Using what was available...  [5] Using what was available to me, I placed a length of C-channel across the body, clamped to the shoulder tubing, then used a block of wood and a scissor jack to mock up the first piece of tubing. With the car set at ride height, the top of the cage was set level with the ground.  [6] With two temporary spacers...  [6] With two temporary spacers (arrows) made to maintain the 6-inch center-to-center distance apart of the two tubes, the second tube was clamped in place. A square was used to ensure they were perpendicular to the rear section of the shoulder tube.  [7] Prior to welding any tubes...  [7] Prior to welding any tubes in place, a small hole was drilled at each joint to prevent any pressure buildup inside the tubing during welding. If this isn’t done, the last section of each weld could blow out.  [8] With the main part of...  [8] With the main part of the cage tacked in place (minus the lateral movement tubes), I reset the chassis so it was level, making it easier to ensure each vertical tube from the shoulder bar to the frame was vertical.  [9] With the vertical tubes...  [9] With the vertical tubes in place, I set the top of the cage level again and installed the lateral movement tubes. These are slightly smaller than the main structure, at 1 1/2 inches in diameter.  [10] Prior to installing diagonal...  [10] Prior to installing diagonal tubes from the shoulder tube rearward into the pickup bed, I fabricated this floor section to mount the gas tank, battery, and fire extinguisher.  [11]  [12] … with the DJ Safety...  [12] … with the DJ Safety fire extinguisher behind the driver. This has to be mounted at a minimum of 15 degrees from horizontal.  [13] I used my trusty Miller...  [13] I used my trusty Miller 375 X-treme plasma cutter to make the fire extinguisher mounting brackets from 3/16-inch steel. The aluminum clamps will bolt to these.
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