[ckau]

Takijg X-bird’s idea of the swing arm heim conversion, I fabbed the following. The main difference between his and mine is that I did not want to increase the wheelbase. If anything, a slight decrease would be a plus for me.
First I got some rectangular bar stock 1-3/8 wide x 1” thick x 3” long. Standard width for the bar stock is 1-½ wide so you got to shave a 1/8 off one side in order for the bar to slip into the rectangular swing arm frame. I used a 5/8 heim so a 5/8 x18 hole was drilled and tapped in the bar stock located to place the heim centered in the original bushing tube location.
The swing arm was cut using a 4”cut off to remove the bushing mount and slicing the tubes to receive the bar stock. The tab that’s folded back gets folded back up and welded in place after the bar is securely in position. Because there’s not much area to weld in the bars as the bars were 2/3rds in the frame , holes were drilled for welding spots.
Tap the bars into the frame ,get the heim holes centered and weld it up! That’s it! Clean up the loose welding slag and your done.
Wheel base remained the same. Heims gave a smoother /tighter pivot. Adjustability to square the wheelbase and the ability to give some side to side offset by using different length spacers in the frame hanger. I may play with this side to side thing to see if it effects roll center whenever it finally gets on the scales. Replacing heims are a quick easy and cheap fix should something go wrong and because the bar stock internally bridges the original but joint in the frame some major strength has been added.