Hi all. I am getting ready to rivet my bottom wing skins and mount the w-721 flap brace. Question does the w-721 flap brace get countersunk where it gets sandwiched between the dimpled bottom skin and the flap hinge? I can not find any reference in the manual or plans. My thinking is that the flap hinge needs a flat surface to be riveted to. Correct? Thanks Joe
Van's Air Force
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w-721 flap brace question
- Thread starter KitfoxJoe
- Start date
Joe
I dimpled all three components. The skin is .032 the brace .040 and the 257 hinge is .040. I didn't find any reference in the plans but in section 5 early on Vans recommended dimpling .040 and under and I have just been following the instructions more or less through the fuselage and its working out. I suspect you could countersink either the flap brace or the hinge. If I were to do one or the other I would do the brace as it is sandwiched between the two. Hope this helps.
I dimpled all three components. The skin is .032 the brace .040 and the 257 hinge is .040. I didn't find any reference in the plans but in section 5 early on Vans recommended dimpling .040 and under and I have just been following the instructions more or less through the fuselage and its working out. I suspect you could countersink either the flap brace or the hinge. If I were to do one or the other I would do the brace as it is sandwiched between the two. Hope this helps.
longranger
Well Known Member
Ditto. The brace is 0.040, plenty thick enough to countersink. I've read of folks successfully dimpling hinge stock, but when I tried it, it started turning into a coil...
