Installing the Roll Bar – 2

I removed the roll bar and drilled the holes up to final size in both the roll bar and in the aft canopy decks. The holes were #12 for the forward holes, ¼” for the aft holes. I used a unibit for the F-721B holes to keep the holes from wandering and then deburred all the holes.

I installed bolts/nuts/washers to hold the roll bar in place for further fitting. When the nuts had been tightened, I double-checked that the roll bar was square to the fuselage longerons. See DWG 42, View C-C. I used shims as required particularly on the right side.

Time: 4 hours.