This weekend was fun because me and Maria got to work on the plane and we got to get the ribs in. That makes it feel like a real wing to me even though there is still a ways to go.
First, I had to straighten the ribs with fluting pliers. Fluting pliers allow you to make indentations in a piece of sheet metal that will make the length shorter and hopefully straighten the parts where you do it. I am only working on one wing at a time and that meant I had 12 ribs to straighten. I probably spent too much time on it and even then, they didn’t seem perfect. I figured it was close enough and called it done.
The ribs have attach clips that are riveted to the ribs. These clips allow you to rivet the ribs to the spar. RANS recommends priming the area where the clip and rib mates, so that’s what I did. I primed the wrong sides of the ribs, so I got to do it all a second time when it came time to read everything again. I used a self-etching primer made by Duplicolor. I have read quite a few forums that seemed to believe in the stuff enough for me to use it. When they were primed, I modified a few ribs that required grommets to be installed.
The next step was to rivet clips for two of the ribs to the spar and then rivet the rest of the clips to the ribs themselves. NOTE: THE RIB CLIPS FOR THE TIP RIB WERE MISLABELED. I saw this note from another builder and it was true for me as well, so if anyone reads this thing, double check the clips. After the clips were riveted in, we started to cleco the ribs in place. This required loosening the drag braces to install the ribs. As we got to the outer ribs we noticed that the spars were too far away. This happened because the tip bow is underbent and is pushing out on the spar. I used some ratcheting straps to slightly pull them together so I could cleco in the ribs.
After that was done (and the next day), I had to rivet the tip rib to the tip bow. This took a lot of work because it just didn’t seem to want to be there. I finally got it in there and got on to the next objective which was to install stringers through the ribs.
The stringers are installed on the upper and lower parts of the ribs. I got them through the ribs and then cleco’d them in place. I called it a day after that because I am waiting on parts for the bellcrank and I’m not sure how far I can go without that installed.
Once I get that figured out, it will be getting the fuel tank installed. If you read this and there aren’t any pictures, check back in a day or so and they’ll be here!
(8 hrs)