A few points about the 2+2; I'm covering mine BTW so hope to be done soon. I had to modify my wood spar to clear the lift strut; I think I had to sand a curve about 3/16" deep over a 3" area of the front spar; the modification scared me. I consulted a friend; aero engineer; who ran the numbers for me. The mod reduced the strength of the spar to something like +/-10G's at 200 knots vs the original of +/-12 g's at 250 knots. Bottom line, the wing is overbuilt. I know that isn't the only factor in GW but the wing is definitely strong. Regarding fuselage size, I chose not to widen my fuselage because modifications to one dimension seems to have a cascading effect on way to many other unforeseen issues down the line. I handled the narrow fuselage by having my seats on sliding tracks. Unless I'm getting instruction from someone with the same short stance as me, sliding one seat back keeps the shoulders from touching, making it fit a lot better. Yes, it is narrow but how often will I really fly with someone else up front? I also added flaps to my wing, and I added the standard bow wing tip so that made changes to my wing; again everything is wood. The weight of my wing (uncovered, no cables, tank, or tank bay cover) was 64 lbs. That includes the modification I made to remove the cross brace in the fuel tank bay and put a 1/8" plywood shear plate under that tank bay; again after getting calculations done to support the change. All in all, my 2+2 wing is a lot different from the plans but it still seems to be very light and strong. I feel pretty good about the 2200lb gross weight in the plans but likely won't operate at that weight since I'm using a O290D2 so my HP is a bit limited. I attached my modified drawings for my wing.
Marty57
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