How To Build A Delta Kite

Step-by-Step - Page 2 of 4

The MBK 2-Skewer Delta

How To Build A Delta Kite

Sail template for the 2-Skewer Delta kite.

The template shown above represents one side of the kite sail. You will now transfer these measurements to the sail plastic as follows...

The 2-Skewer Delta - template marked onto plastic bag.

Note: I've made the dots much bigger than they need to be, just so they show up easily in the photo. By the way, there should be a dot on the center-line, right near the bottom - but the photo cuts it off.

  • Firstly, mark the the top dot on the center line, then lay the vertical spar down beside the plastic and mark the bottom dot.
  • Measure 1.25SL (36.3cm, 14 3/8") down from the top dot and mark the middle dot.
  • Next, mark each end of the fold-line plus the mark which is part-way along the trailing edge, as in the photo - judging the 90 degree angle by eye is quite OK since any small error will be exactly the same on the other side.
  • Lay a leading-edge spar over the fold-line, and shift the lower dot a little if necessary, so the fold line is exactly the same length as the bamboo spar.
  • Next, mark the 2 corners of the long narrow flap along the leading edge - after seeing what 0.05SL (1.5cm, 5/8") looks like, just put these dots in by eye.
  • Finally, rule lines between the marks, as in the photo.

The 2-Skewer Delta - complete sail outline.
  • Flip the plastic bag over, and trace over all the black lines using your marker pen and ruler.
  • Cut out a roughly rectangular section of the bag containing the kite sail, open it out and lay it flat on the table - you can now see the complete sail outline, as in the photo.

The 2-Skewer Delta - sail cut out and edged with sticky tape.edges 2
  • Lay a piece of clear sticking tape along the short nose section with the line showing through the center of the tape - but avoid getting any tape on the fold-line.
  • Lay 4 pieces of clear sticking tape along the trailing edge, with each line showing through the center of the tape - again, avoiding the fold-line.
  • With scissors, cut all around the sail outline.

The 2-Skewer Delta - spreader glued in place

Is the glue on all the bamboo spars dry? If so ...

  • Place the leading edge spars, the ones with just one short reinforcer, over the fold lines - with the reinforcers facing the center-line.
  • Lay one of the remaining spars over the 2 leading edge spars, so it crosses them at the top end of the 2 reinforcers - this will be the spreader.
  • Making sure the spreader is centered over the sail center-line, make marks where it crosses the leading edge spars.
  • Next, snip off the ends of the spreader, at those marks
  • Re-check the fit, since you will probably have to snip a few more times to get it just right - the tips tuck neatly in, with the spreader lying flat against the table.
  • When it all looks good, drip on some wood glue, as in the photo.

Now wait for this to dry!

The 2-Skewer Delta - leading edges taped and spars capped.

The black pieces of electrical tape mentioned below should all be roughly 3 times longer than they are wide. You can't see the full length in the photo since they are folded under.

  • Place the remaining spar over the center line of the sail, and underneath the spreader - this is the vertical spar.
  • Secure the upper end of the vertical spar to the sail with a piece of electrical tape, wrapping it under to the other side of the sail.
  • Secure the lower end of the vertical spar to the sail with a similar piece of electrical tape, wrapping it under to the other side of the sail as before - gently pull any slackness out of the sail as you do this.
  • Next, fold the sail over the leading edge spars and cap the tips with black tape, as in the photo - the tape should be folded around the tip of the spar so it can't slip through the plastic.
  • Add more tape like the yellow pieces in the photo - right over top of the short reinforcers.
  • Add 4 long pieces of clear sticky tape to complete the taping down of the sail near the leading edges of the kite.
  • Secure the spreader to the vertical spar, using drops of glue where they cross.
  • If you want to, trim any bits of tape that stick out, with scissors.

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What's New!

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    Jul 04, 20 08:23 PM

    I have built a few of your dowel series kites: delta, barn door, and dopero. I liked the dopero so much that I decided to learn how to use a sewing machine

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Wind Speeds

Light Air
1-5 km/h
1-3 mph
1-3 knots
Beaufort 1

Light breeze
6–11 km/h
4–7 mph
4–6 knots
Beaufort 2

Gentle ...
12–19 km/h
8–12 mph
7–10 knots
Beaufort 3

Moderate ...
20–28 km/h
13–18 mph
11–16 knots
Beaufort 4

Fresh ...
29–38 km/h
19–24 mph
17–21 knots
Beaufort 5

Strong ...
39–49 km/h
25–31 mph
22–27 knots
Beaufort 6

High Wind
50-61 km/h
32-38 mph
28-33 knots
Beaufort 7

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