RVBottomly
PATRON
Asotin County Washington (KLWS)
I'm starting to source materials for the wings on my 2+2 build. That, of course, got me thinking too much and caused me to realize how little I understand.
The quick summary: The mission for the airplane is moderate cross-country ability with option to access reasonable rough strips in our area (Idaho and Washington). I'm not going to be gonzo, I don't think, because my wife will be flying with me most of the time. We like to go to fishing holes and plan to go to the Seattle area a few times a year (Paine field or thereabouts--280 miles from us). Floats are in the semi-distant future.
The source of doubt: My Wag Aero plans are for a wooden wing, but you can buy a "wing kit" in aluminum from them. I want to keep the option open for Keller flaps--I contacted Performance STOL and they discouraged use on a wooden wing. Fair enough. I'll go with aluminum.
I have no drawings for a metal wing for my project (other than Northland's), but the 2+2 plans indicate 2200 GW. My issue is I can't see for myself what is required for a for that GW. I've read fairly exhaustively here about GW increases with spar doublers, etc. I'm nervous about what seems to be a cavalier design.
I'd like to scratch-build my ribs, and it seems like I could fit a 4.5" rear spar in instead of a 4" one. Is that even done? Can someone point me in the right direction for research?
Otherwise, after looking at Stewart's Wildcat Cub build, I'm starting to think I want something like that. http://www.supercub.org/forum/showthread.php?52224-Another-which-kit&p=704442&viewfull=1#post704442
I guess the basic question is: how should I scratch build a 2200 pound gross weight wing? What should I look out for, etc.
Thanks,
Vic
The quick summary: The mission for the airplane is moderate cross-country ability with option to access reasonable rough strips in our area (Idaho and Washington). I'm not going to be gonzo, I don't think, because my wife will be flying with me most of the time. We like to go to fishing holes and plan to go to the Seattle area a few times a year (Paine field or thereabouts--280 miles from us). Floats are in the semi-distant future.
The source of doubt: My Wag Aero plans are for a wooden wing, but you can buy a "wing kit" in aluminum from them. I want to keep the option open for Keller flaps--I contacted Performance STOL and they discouraged use on a wooden wing. Fair enough. I'll go with aluminum.
I have no drawings for a metal wing for my project (other than Northland's), but the 2+2 plans indicate 2200 GW. My issue is I can't see for myself what is required for a for that GW. I've read fairly exhaustively here about GW increases with spar doublers, etc. I'm nervous about what seems to be a cavalier design.
I'd like to scratch-build my ribs, and it seems like I could fit a 4.5" rear spar in instead of a 4" one. Is that even done? Can someone point me in the right direction for research?
Otherwise, after looking at Stewart's Wildcat Cub build, I'm starting to think I want something like that. http://www.supercub.org/forum/showthread.php?52224-Another-which-kit&p=704442&viewfull=1#post704442
I guess the basic question is: how should I scratch build a 2200 pound gross weight wing? What should I look out for, etc.
Thanks,
Vic
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