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Step 2Cut out the wing end pieces
[Note: The design for the wing in this step will not give the best lift. Please look at step 3 for a better design. It will show that the sides of the wing are not symetrical. Step 3 will also give a procedure for sizing the wing based on the diameter of the lenz2. (added 1 June 2008).''']
The teardrop endpieces will provide the aerodynamic shape of the wings. You will be building three wing so you will need 6 end pieces. The size I used was half the size the the end pieces described by Ed Lenz. They basically look like ice cream cones.
I recommend that you cut out a cardboard template and use it to draw six images of it on half-inch plywood. Here's how to draw it:
1. Cut a rectangle of cardboard 3.5" x 7.5"
2. Draw a center line along the long axis
3. Make a mark on this line 1.75" from one of the ends (let's call it this the top end)
4. Draw a horizontal line through that mark to the side edges so that it intersects the vertical line at 90 degrees.
5. Using a compass, draw a 1.75" half circle on the top side of that mark. It should intersect the two side edges and the top edge.
6. From where the center line intersects the bottom edge draw lines to the points where the half circle intersects the side edges.
7. Cut out the template.
Use the cardboard template to draw six images on the half inch plywood. You can nest them in such a way that you don't waste the plywood.
Use a jigsaw to cut out the end pieces.
The teardrop endpieces will provide the aerodynamic shape of the wings. You will be building three wing so you will need 6 end pieces. The size I used was half the size the the end pieces described by Ed Lenz. They basically look like ice cream cones.
I recommend that you cut out a cardboard template and use it to draw six images of it on half-inch plywood. Here's how to draw it:
1. Cut a rectangle of cardboard 3.5" x 7.5"
2. Draw a center line along the long axis
3. Make a mark on this line 1.75" from one of the ends (let's call it this the top end)
4. Draw a horizontal line through that mark to the side edges so that it intersects the vertical line at 90 degrees.
5. Using a compass, draw a 1.75" half circle on the top side of that mark. It should intersect the two side edges and the top edge.
6. From where the center line intersects the bottom edge draw lines to the points where the half circle intersects the side edges.
7. Cut out the template.
Use the cardboard template to draw six images on the half inch plywood. You can nest them in such a way that you don't waste the plywood.
Use a jigsaw to cut out the end pieces.
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