Brief Description: Spar Box Install and Wing Alignment V
Having made small adjustments to the holes for the bolts securing the box to the fuselage with a round file and with one person supporting each wing tip, we managed to insert the spar bolts without damaging them. We lined up the right wing with the wing root as best we could. Then we measured from the firewall to the wing leading edge at the root on both sides to ensure the distance on both sides was equal. Then we measued the distance from the trailing edge at the wing tip on each side to a point on the vertical stabilizer. The measurements were equal to within 1/4". Having set the fuselage level by placing a level across the cockpit opening, we checked the vertical height of each wingtip and found them to be equal. Then we drilled through the front and rear angle of incidence holes on the right wing, finalizing its angle of incidence. Using a plastic tube with water in, we measured the vertical distance between the leading edge and trailing edge at the root and then at the first flap hinge. Using the tube again, we set the angle of incidence of the left wing to match and then drilled the angle of incidence holes on the left wing. We drilled the holes for the bolts to join the two spar box halves together on the top of the spar box. We then removed the wings. On each of the 4 ends of the spar box halves, I removed one of the bolts securing the box to the fuselage and filled any irregulrity in the hole with epoxy/flox and redrilled it. I continued to do this until all twelve holes were filled and redrilled. I did this one by one to ensure the spar box did not move from its position.
