66.969 pounds = two wings -- 144 x 51 inch chord, Rhode Saint Genese 32 airfoil, with full span flaperons, constructed of spruce spars, one-inch two-pound extruded styrene ribs, 0.5 inch 0.049 6061 tubes, 2024 fittings, and covered by 1/32 inch 3-ply aircraft plywood, medium weight Dacron, and finished using PolyFiber paint products.
(No, they were not EXACTLY 33.484, and 33.485 pounds each ... but they were pretty close to the same weight.)
8.567 pounds = 54 inch 0.375 inch by 2.5 inch one-piece spring steel main landing gear.
7.88 pounds = One 5-inch two-part aluminum wheel, 5x3.40/3.00 tire, 3/4 roller bearing, and inner tube.
5.02 pounds = 5 gallon steel fuel tank, made from a 11.5 inch diameter, 13.5 inch tall lubricant drum with the original cap sealed, a bung added for a drain cock, brass on-off cock, a new filler neck, and cap.
~~the following was previously posted on 4/7/23~~
Known weights from projects I have personally worked on obtained by comparing actual pre- and post-cover weight and dividing by cover area. These numbers being somewhat experience dependent.
---0.016 inch 2024-T3 3.677 ounces per square foot.
---6 ounce Fiberglass cloth with 4 heavily sanded fill, 1 sanded, 1 unsanded gloss coat, 2.672 oz per sq foot
---8.4 ounce Dacron Sailcloth 1.178 ounces per square foot.
---Medium weight fabric, 2 coats PolyBrush, then PolySpray, 6 coats silver, 4 coats PolyTone 0.929 oz per sq ft
On 145 sq foot of plan surface area (ca. 293 sq foot of aerodynamic surface) that translates into
---67.335 pounds for aluminum,
---48.931 pounds for fiberglass,
---21.572 pounds for double surface sailcloth.
--- ** Note: "single surface" sailcloth is usually 1.4-1.5 surface so that's 15.100 -- 16.179 pounds. **
---17.012 pounds for Stits...
(No, they were not EXACTLY 33.484, and 33.485 pounds each ... but they were pretty close to the same weight.)
8.567 pounds = 54 inch 0.375 inch by 2.5 inch one-piece spring steel main landing gear.
7.88 pounds = One 5-inch two-part aluminum wheel, 5x3.40/3.00 tire, 3/4 roller bearing, and inner tube.
5.02 pounds = 5 gallon steel fuel tank, made from a 11.5 inch diameter, 13.5 inch tall lubricant drum with the original cap sealed, a bung added for a drain cock, brass on-off cock, a new filler neck, and cap.
~~the following was previously posted on 4/7/23~~
Known weights from projects I have personally worked on obtained by comparing actual pre- and post-cover weight and dividing by cover area. These numbers being somewhat experience dependent.
---0.016 inch 2024-T3 3.677 ounces per square foot.
---6 ounce Fiberglass cloth with 4 heavily sanded fill, 1 sanded, 1 unsanded gloss coat, 2.672 oz per sq foot
---8.4 ounce Dacron Sailcloth 1.178 ounces per square foot.
---Medium weight fabric, 2 coats PolyBrush, then PolySpray, 6 coats silver, 4 coats PolyTone 0.929 oz per sq ft
On 145 sq foot of plan surface area (ca. 293 sq foot of aerodynamic surface) that translates into
---67.335 pounds for aluminum,
---48.931 pounds for fiberglass,
---21.572 pounds for double surface sailcloth.
--- ** Note: "single surface" sailcloth is usually 1.4-1.5 surface so that's 15.100 -- 16.179 pounds. **
---17.012 pounds for Stits...
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