Spent 5 hours working on the project. Installed the 2 hinge brackets on the forward HS spar. Learned that the drag torque of the nutplates was appreciable. With the beam style torque wrench, I measured a drag torque of 8-10 in/lbs. This added to the torque specification of 20-25 in/lbs gave me a window of 30-35 in/lbs for the AN3 bolt. Also ensure the bracket bolts are torqued to specification before installing the spacers. If the spacers are installed, there is no room for the socket.
Spacer installation went well, no trimming of the spacer was necessary. I cut the spacer exactly to the specification of 21/32". If is was a 1/32" over (still within the plan spec.), I would have had to do some trimming. It is amazing how these parts fit!!!!! Drag torque of the nut was about 2-3 in/lbs.
Then fabricated the HS hinges using the supplied template via the drill press. Match drilled the hinge to the skin per the plans. Seems like a strange way to match drill, but, it must work. Will see!
Prepped the HS skins, deburring the edges, removing all of the machining marks and rounding over all sharp corners. I do hate removing the blue film.
Last task of the day was to prime mating surfaces on the HS skeleton. Used SW P60-G2 this time. Skinning on Friday!
Time - 5 hours Total Empennage - 58 hours Wings (Complete) - 175 hours
