[Mike Bradbury]

Now on the original lower bracket that attaches to the fender you will need to weld a nut to the two main arm pivot points. This is so the new arms can be secured to the bracket via bolt vs. rivet. also you will need to drill some of the aluminum arms straight through and some will need to be threaded. This all depends on which method you will be using for bearings. I chose the oil impregnated bronze bushings because I used the thinner aluminum stock and I was not able to mill a bearing pocket deep enough to accommodate a sealed bearing in the 3/8 stock. I believe 1/2 will suffice if you want to go the sealed bearing route but I did not calc that mat out so I am just guessing on that one. If you have a bearing distributor near you then a trip to the warehouse with a set of calipers is probably necessary. I will describe the method I used with the bronze bushings because that is what is seen in the photos. The theory goes like this; For every joint on the hinge there is a 1/2 (varies depending on the size bronze you buy) hole in one arm and a 3/8 threaded hole in the other side. You do not want to squeeze the two plates of aluminum together tightly because then the hinge would not articulate, it would just be frozen in one position. Therefore a stainless steel sleeve needs to be turned on the lathe to be fit inside the bronze bushing and long enough to allow the bolt to be tightened down leaving enough room foe a Teflon washer to fit in between the two sliding surfaces of aluminum. You can see that I have marked the holes to thread and which to drill in the photo below.