Brief Description: Flap Mounting and Trailing Edge Drilling
I had a little scare this morning when I went to put the hinge pin through the flap hinge for mounting. I had introduced a very slight bow into the hinge as I attached it to the trailing edge of the wing, so the hinge pin went in a little tighter than I wanted. Since I'd split the hinge to attach it, there was a little flex in it that allowed the bow to develop. Luckily, I had attached it with #40 pilot holes, and there was enough distance to straighten it out using the difference between a #30 and a #40 bit. In other words, the #30 bit was big enough to allow for the #40 hole being slightly off-center, and swallowed up the hole in the process of making it bigger. Wow - that's hard to explain. The lesson here - attach hinged control surface hinges with the control surface attached so that you know the fit is good before you try to put in the pin. Duh.
Looking outboard from the rear wing root
Flap trial-fit. 3mm oversize at the front as called for in the plans
