Making A Box Kite

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All will be looking better by mid-November. T.P. (major site update in progress)

Step-by-Step - Page 2 of 3

MBK Dowel Box (mod. winds) 




Making A Box Kite
Main Spars 

The Dowel Box - spars

Using your hack-saw, cut off 4 lengths of dowel to a length of 1.0DL (120cm, 48”) each. The dowel should be 5mm (3/16”) in diameter.

With a wood file, round the dowel ends. Just enough to take off the sharp edges will do.





Making A Box Kite
Adding Spars

  • Lay down the main spars you have just made, and tape them down to the plastic sails with electrical insulation tape. See the larger photo below, left.
  • The 2 small photos on the right show how the spar tips are capped with insulation tape, which is wrapped around to the other side of the sail.
The Dowel Box - adding spars to plastic.


The Dowel Box - closer view of spar taping
The Dowel Box - spar tip close-up
  • Short lengths of dowel must now be glued to the spars, everywhere where there are those short lengths of sticky tape. Cut off 16 pieces of dowel, to a length of 0.01DL (1.2cm, 1/2”), and position them in pairs as shown in the close-up photo over there on the right.
  • These pieces of dowel will lock the cross-pieces in place. Two cross-pieces near the trailing edge of the upper cell and two cross-pieces near the trailing edge of the lower cell.
The Dowel Box - joining the cell plastic
  • Fold a sail, bringing the short edges together and joining them with sticky tape as shown in the photo. Do the other one in the same way.
  • Now open the box kite out, and lay down tape along the inside edges as well, to make the 2 joins even more secure. A bit tricky, so take your time!




Making A Box Kite
Cross-Pieces

The Dowel Box - cross-piece tip close-up
  • Cut off 2 pieces of dowel, each 0.5DL (60cm, 24”) long. These are 2 of the 'cross-pieces', which will brace the kite to make it rigid.
  • Cut off another 2 pieces of dowel, each 0.605DL (72.6cm, 29”) in length.
  • Cut off 16 pieces of dowel to a length of 0.01DL (1.2cm, 1/2”) and glue them to the cross-pieces as shown in the photo below and the close-up there on the right.
The Dowel Box - the 4cross-pieces.
The Dowel Box - shoe-lace tie on a cross-piece

When dry, use extra glue along the joins on each side, to make sure they are strong. In a Box kite of this size, the weight of the glue is not much of an issue!

You also need to tie a 0.3DL (36cm, 14 1/2”) length of small shoe-lace to the exact center of each shorter cross-piece. Then, smear a little wood glue over each knot so it can't slip along the dowel. See the close-up over there...





Making A Box Kite
Bridle

50 pound Dacron is the ideal type of flying line for this kite.

  • Measure 0.1DL (12cm, 4 3/4”) in from one end of a spar (less than half the width of the sail), and use a pen to poke a round hole in the plastic, right over the spar.
  • Cut off a 1.5DL (180cm, 72”) length of flying line, and tie a small overhand loop into one end.
  • Attach the looped end to the kite, by passing it through the hole, twice around the spar and then out again, before putting in a hitch to form a Slip Knot. Pull tight.
  • Using the same kind of knot, attach the other end of the line to the same spar, just in front of the lower cell of the kite.
  • Smear some glue into both knots to secure them and prevent slippage up and down the spar.
  • Now take a length of flying line about 0.5DL (60cm, 24”) long, and tie one end to the bridle line with a Prusik Knot, or any other shiftable knot. Tie a small Double Loop knot into the other end, just to get a big knot.

All this is visible in the photo below, although the cross-pieces are not inserted. At this point, you've pretty much finished making the MBK Dowel Box kite!

The Dowel Box - comjpleted bridle.




Making A Box Kite
Setting Up

The Dowel Box - rigged and ready to fly
  • Lay the kite flat on the ground, with the bridle spar in the middle and on the bottom next to the ground.
  • Insert a long cross-piece into the upper cell, spreading the 2 side spars apart.
  • Insert a short cross-piece into the same cell, locating one end connects with the spar which has the bridle attached.
  • Stretch the cell upwards and snap the other end of the cross-piece into the remaining slot.
  • Tie the shoe-lace securely to the longer cross-piece. This prevents it from bending in the middle, and so increases its strength a lot. Use a bow so it can be undone easily! There's the completed upper cell in the photo.
  • Insert and tie the remaining 2 cross-pieces into the lower cell, so they match the other 2 cross pieces. The short one should contact the bridle spar.

If either cell doesn't seem to be stretched tight, you might need to add glue inside the tips of the cross-pieces, to lengthen them slightly. If that's not enough – make another pair, slightly longer.





Making A Box Kite
Breaking Down

The Dowel Box - cross-pieces removed and cellsrolled up.breaking down

Lay the kite on the ground with the flying line removed.

  1. Undo both the shoe-lace ties.
  2. Flex a little bow into one of the longer cross-pieces, just enough to remove it from the kite.
  3. Similarly, remove the other longer cross-piece.
  4. Remove the 2 shorter cross-pieces.
  5. Place all the cross-pieces alongside the spars and roll up the kite. The bridle can be wrapped around the spars too, to help keep it all together.


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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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