Category: Wings

Worked at finishing up the second root rib attach angle. Again all but the holes

I cut all of the 2 x 2 x 1/8 aluminum angle to length

From the 2 x 2 x 1/8 angle I made the larger aileron bell cranks for the opposite wing. These are getting fairly easy with all the practice.

I finished up the smaller set of aileron bell cranks today.

I worked on the aileron bell crank clevises today. I was able to make one from some of the scrap I generated when I was working on the motor mounts.

The heading says it all. I will need to make up another short clamp bar for the bending brake to form the short flange on both ribs.

I deburred all of the remaining ribs today. Now I just have to form them. I also ordered a set of offset seaming pliers to help form some of the sharp bends.

Using the templates I made earlier in the week, I layed out the remaing aileron, flap and tail ribs and cut them out.

I finished the sanding and deburring of the rib gussets and then formed them using my bending brake. I started by using my scotch brite wheel to clean up the around the relief hole. Next I used a block sander with 220 grit aluminum oxide paper to sand all of the edges smooth and square. A coarse scotch brit pad was used to finish the edges and the surface. With the part ready to be formed I started to work on the bending brake. I created a template to gauge the edge of the clamp bar. It needs to have a 1/16" radius filed into it. I put the clamp bar in my vise and with a file, created the necessary edge. With the clamp bar prepared I was ready to form the gussets. I drew the tangent lines on the gussets for the first 16 and then after a little experimentation formed them with the brake. For the last 16 I only marked each end of the tangent lines.