Smitty's RV-9A from Van's Aircraft

RV-9A: Project Entry

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Ready to trimmed the canopy frame tubing for a better fit.
The canopy frame sticks up way over the top of the roll bar. You have to trim the tubes on each side of the frame where the rollers are placed, in order to lower the frame to the right position behind the roll bar. Here's where things get confusing. I used the drawing to the left to determine the height of the canopy frame to the roll bar, which calls for the center of the canopy frame tube to be 3/8" above the roll bar top.
THEN I read this from the handbook:
"You should try to get the frame bow to be approximately 1/8-3/16" bigger than the roll bar, all the way around. The point on the roll bar that has the most curve (10 o'clock and 2 o'clock) should be a little larger (a full 3/16") than on the top or the sides."
So what the hell is it? 3/8" or 1/8-3/16"??

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