Jib - Center Fork
The center fork is made from two pieces of 1 1/2" X 1" X 1/16" thick steel rectangular tubing. I welded these two pieces to a custom made piece of channel to form the final fork. I left a small amout of the channel sticking out from one side of the fork to hold a small bubble level (enlarge bottom left image). As it turns out, it is easier to just eyeball the position of the jib. The image to the right shows the bearings inside the fork. I used a dremel tool to cut an area out of the tubing just big enough for each bearing to fit snugly in place. A snap ring on the bearing keeps it from pulling all the way into the tubing.
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The image above to the right shows the bearings. Notice that there is a bearing on either side of the tubing. I did this so that I could drill additional holes along the lengths of aluminum square tubing and easily change the folcrum point of the jib. So to maybe clarify this a little, the center fork has a total of 8 bearings.
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