How to Make a Soft Sled Kite

Step-by-Step—Page 1 of 2

The MBK Soft Sled

Learn how to make a soft sled kite with these easy-to-follow instructions. Fully illustrated with large photographs, every step of the way.

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How to Make a Soft Sled Kite
The Sail

Measuring the Sail

The kite described here will need fairly heavy bag plastic. The orange plastic in the photos is a high-strength garden bag. Another alternative would be painters' heavy-duty drop sheet plastic. If very thin and flimsy plastic is used, your kite might tend to fold up in the air rather than fly.

If the plastic is hard to see through, it's probably thick enough!

• Place your plastic bag flat on the floor. In the case of plastic sheeting, fold it in half from left to right and run a sharp, straight crease down the left-hand side.
• Starting from near the top left corner, measure and mark dots on the plastic. Just follow the arrows marked on the photo. I've highlighted the dots in yellow.

Judge the horizontal and vertical directions by eye. If you're careful, there's no need for a T-square. The slight slope near the bottom of the photo is just the camera distorting the image. The arrows should be horizontal!

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Marking the Sail

• Take your ruler and connect the dots with the black marker pen, as shown in the photo.
• Flip all the plastic over and trace over all the black lines showing through the two layers of plastic.

Hint: If it's too hard to see through the plastic, just lay it up against a window. The light from outside should show up the lines easily. Mark dots at all the corners, and then connect the dots using pen and ruler.

I know what you're thinking—why not just rule one set of lines and then scissor cut the two layers of plastic at once?

Answer—it's very easy for one sheet to slip against the other while cutting, with horribly inaccurate results! Do it my way and your kite will fly perfectly, the first time.

• Open out the plastic to show the complete sail outline, as in the photo above.

If using a bag, you'll first need to cut off the top, bottom, and right-hand sides of course. So you can unfold it right to left. That's what I've done in the photo above.

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Taping the Sail

• Lay packing tape along the marked lines as shown in the photo above.

Around the outside of the sail, let the tape overlap the black lines by about a finger width. Leave most of the tape inside the outline.

For the two central lines drawn down through the sail, try to center the tape's width over each line—as close as you can get it by eye!

Hint: It's a lot easier to use packing tape when the roll is sitting in a dispenser. Pull tape out to length and then tear off, just like sticky tape.

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• Now flip the plastic over.
• Lay packing tape along just the two lines closest to the center of the sail. See the photo above.

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Cutting the Sail

• Take your scissors and cut all around the outside of the sail, along the black lines. When you are finished, it should look like the photo up there.

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Measuring the Cells

The cells are the inflatable pockets that do the same job as rods of wood or fiberglass in a simple sparred sled. Hence some call this kind of soft sled a ram-air sled. The air rams in the front opening, helping to keep the cell rigid while in flight!

• As before, place your plastic bag flat on the floor. In the case of plastic sheeting, fold it in half from left to right and run a sharp straight crease down the left-hand side.
• Just like you did for the sail, measure and mark dots on the plastic by following the arrows marked on the photo.

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Marking the Cells

• Take your ruler and connect the dots with the black marker pen, as shown in the photo.
• Flip the plastic over and trace over all the black lines.

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• As you did for the sail, open out the plastic and lay it flat.
• Now draw a line right down the middle, as shown in the photo up there.

 

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Continue to page 2

 

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