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Step 5Uprights
The UPRIGHTS are ash wood, same as a hockey stick.
They are .95" thick and 5" chord. The foil is thus 19% thick.
How long are they?
It is 22.5" from the underside of the CROSSBEAM to the top surface of the MAIN WING.
The bottom end is left thick and is shaped to match the curved top surface of the wing. The top is ornamentally long like an antique saw or a Kenyan outrigger canoe.
Cut two mortises to mate with your crossbeam. At the bottom drill a vertical hole for the bolt through the wing. Drill a horizontal hole into that for the nut the bolt screws into. Just like an Ikea futon couch.
Don't worry about foil section. Make them blunt in front and taper to a thin square edge in back.
If you can't help yourself, here's a NACA 0018 section to look at.
They are .95" thick and 5" chord. The foil is thus 19% thick.
How long are they?
It is 22.5" from the underside of the CROSSBEAM to the top surface of the MAIN WING.
The bottom end is left thick and is shaped to match the curved top surface of the wing. The top is ornamentally long like an antique saw or a Kenyan outrigger canoe.
Cut two mortises to mate with your crossbeam. At the bottom drill a vertical hole for the bolt through the wing. Drill a horizontal hole into that for the nut the bolt screws into. Just like an Ikea futon couch.
Don't worry about foil section. Make them blunt in front and taper to a thin square edge in back.
If you can't help yourself, here's a NACA 0018 section to look at.
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