Rear Leaf Springs Mounts
The Formula Toyota rules require rear leaf springs. The rules state that the spring can be inboard mounted to as narrow as the stock front springs. Front springs are mounted at 29" center to center. That's exactly where we are going to mount our springs.
My first plan for rear hangers was to use a section 2" X 4" tubing across the frame. After talking with our fab guy Andy, he had a much better idea. He suggested using our frenched hanger and coming off it's flat sides with gussets back to the frame. That was a much better plan of action.
So I grabbed a pair of hangers off the shelf...
Using a section of scrap tubing, I tacked the hangers to the tubing at exactly 29" center to center.
Next measured 6.5" up and forward of the factory bolts and marked the frame. Then I placed the tubing on the frame and centered the hangers front to back and left to right. Next I tacked the tubing to the frame and rechecked the position of the hangers.
Next I cut 4 sections of 1.5" tubing. Each end was cut to 45 degrees. These were welded front and rear of each hanger.
After putting on all four braces I removed the section of tubing that was acting as a jig.
Short sections of tubing are placed in-between the frame and the hangers for additional support.
The inside of the frame rails on Toyota frames are thinner than the outside. The braces shown here are only intended to provide forward and back support. After the cage is installed a vertical tube will connect from the top of the hanger to the cage.
