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Task: Finished canopy roll bar!
my goal was to finish the canopy roll bar. There were several
odds and ends to be done to get it leveled and prepped for dilling.
The steps are documented below.
To drill the two exterior screw holes that secure the outter
skin to the F-631C bracket and the roll bar frame, I first measured
and marked the two holes on the F-631C.The plans call out using
the top skin as a guide but due to possible clearance issues,
I decided to deviate from the plans. I first drilled the holes
to #40 in both brackets.
Once the brackets were clecod in place, I back drilled the skin
using a angle drill.
I then opened up both holes to #29 per the plans, and drilled
the skin only #19. The F-631C and frame will be tapped 8-32.
Next I drilled the two aft holes using the F-631C as a guide.
Those holes were then opened up to #12 with a ream for a #10
I countersunk the two aft holes on both sides for an AN509-10R10
screw and then tapped the two forward holes on both sides for
Last task of the day to finish the roll bar was drilling the
insides of the canopy frame to the F-631D bracket. I measured
up 7/8" and cenetered each bolt on the forward/aft half
of the frame.