I knew a backrest would help me, but the seat I have does not have a port to accept one. I have an additional seat and it has a port for the pilot to have one. I looked on line and found some for $60 on up. The design looked pretty simple. So, I figured I could fabricate one. I had the foam, the plywood, some metal, and the vinyl. upholstery. I bought some nuts and bolts, I cut the stem, and tapped some threads into the seat adjust hole.(this when adjusted in and out, changes the angle of the lower stem backrest angle. The top hole has a pivot bolt that also allows for pitch change to the pads.
The pictures tell the rest of the story.
