Bottom Skin Work (2 hr 30m)

First job in the book is to attach the front upper strut fitting to the spar. It’s pretty meaty looking and takes 3 AN-4 bolts to keep it on. Note that one has to go upside down to avoid rubbing on the nose skin.

Next I put the bottom skins on the skeleton and clecoed every few holes. It lined up real nicely, one small kink which I think will easily go away once I have properly leveled the saw horses.

Can’t wait to get to polishing the skins, they really do look bad.

Each skin takes various length l-angles underneath them to act as a stiffener so I cut a whole bunch of angles to the right sizes

and then placed them in the right areas of the skin and back drilled into them along their length. That’s a pretty glib statement as this is quite tricky for one person (at least with my short arms), but I got it done pretty well in the end, only had to remake one l-angle that moved during drilling.

Lastly today I put the flaperon arms inside the skin so that I could backdrill from the bottom into the l-angles that attach to each arm.

I had planned on doing a lot more but before I start opening holes to final size I needed to get the saw horses as level as possible and I noticed that one of the horses read 36″ on one end and 37″ on the other. The only way to change the height is to collapse them and I couldn’t both lift the wing off the horse and change its height so I called it quits for the day and watched some football on TV instead. When my wife came home from some work she helped me out so I should be good to continue with opening the holes and drilling the locations of the trailing edge and nose skins.