Mark Bend Lines on Top and Bottom of Foam Cutout

In step 5 lines are drawn on the bottom of the foam material which was cut in step 4. The bottom side is rougher than the top side of the Raft-R-Mate material (if there is no difference in surface roughness use either side). The air foil shape pattern is created on the bottom side. Draw a dot midway down the center line. Then draw a dot between the middle dot and the leading edge and finally a dot between the 2nd dot and the leading edge. Repeat this same process about 75% towards the wingtips of each wing. Connect each middle dot with a straight line. Do the same for the dot toward the leading edge, forming 3 parallel lines on each wing. Each line will be thermoformed into a bend to create an airfoil for each wing.

The lines for the elevon bends are drawn on the top side of the foam cutout.


For information about plans for foam walkalong gliders see:
http://sites.google.com/site/controllableslopesoaring/Home/foamwalkalonggliders

For more information on other designs and how to fly by controllable slope soaring please see:
http://sites.google.com/site/controllableslopesoaring/

Category:

Howto & Style

Tags:

• walkalong
• glider
• pink
• foam
• how
• to
• make
• controllable
• slope
• soaring

[xsurferpink]

You can use 2mm foam, but the increased weight per unit area will result in a glider which will fly a lot faster and be harder to keep up with.

[MrMiko99]

can you use normal 2mm thick foam istead