Advantages of Box Kites


What are the advantages of a box kite?


A fairly short straightforward question on the face of it, but it got me thinking...

For a start, you might just have a traditional square box kite in mind. So, I'll stick to kites like that, or any others that are fairly similar. In other words, any 2-celled flat-panelled box designs, that fly 'on an edge'.

The first advantage which springs to mind is that a strong-wind kite is so easy to make. The structure is rigid and enables the panels to take a lot of air pressure. Relatively thin dowels still give you a kite that holds its shape well in fresh winds.

A simple box kite stays stable at very forward towing points. This lets the kite ride out strong breezes by reducing its 'angle of attack' in response to increases in wind speed. Less angle means less drag force and less stress on the structure. A simple box kite will fly with no bridle at all - just attach the line near the leading edge of the upper cell!

Another advantage of the box kite is that it is quite a versatile design. My moderate-wind Dowel Box is so lightly built that it has been known to go almost overhead on a 'light wind and thermals' day! By decreasing the size of the panels, and decreasing the length of the cross-pieces, but leaving the length of the kite the same, I created a new kite which could tolerate much stronger winds. The fresh wind Dowel Box. I also shortened the bridle and shifted the towing point forward, past the leading edge of the upper cell in fact. This kite recently flew in 40 kph+ winds.

To sum up that previous paragraph, you can have fun experimenting with endless variations on the basic traditional box design. Stability will vary. Wind range will vary, as will tolerance to very strong wind. But, they will all fly well in the right conditions, with the bridle adjusted somewhere forward of the trailing edge of the upper cell.

Even if you do accidently push a box kite too far (ahem, have you read all my flight reports?!) it's usually just a matter of fixing or re-making a cross-piece or 2. Everything else survives.

Simple home-made box kites are quite quick to rig and convenient to store. Not as quick as some, but it only takes a minute or 2 to locate all 8 cross pieces in the right spots, before lifting the kite up to launch. When de-rigged, even a large box kite doesn't take up much more space than a broom handle.

Box kites lend themselves to simple, bold graphic designs. Even a non-artist like me is capable of selecting 2 contrasting colors, and making the upper cell from one color and the lower cell from the other, for example. Or, you could alternate colors around the kite panel by panel, the same on both cells. In general, areas of color bounded by straight lines work well on a box kite! With just a little thought, almost anyone can make an eye-catching and colorful box kite.

What else... Well, if you are the attention-seeking type, a nice large box kite will certainly pull a few interested onlookers! These kites are a fairly rare sight in the 21st century. People are familiar with Diamonds, Deltas and even those little Pocket Sleds. But a Box will get a double-take or 2 in most countries.

Finally, a large well-made Box kite makes a good reliable, stable platform for all kinds of kite-related activities. Put a light camera in it, raise an arial, attach 'kite-laundry' to the line, send up a 'kite messenger' and so on. Box kites make good lifters.

Hang on, just one more. After whetting your appetite with a simple Box or 2, it's logical to start thinking about more advanced ideas. Like making a Hargrave or a Cody perhaps! Or at least, simple box kites with a bit of extra wing-span, which fly flat, on a 4-point bridle. Have you seen one of those?

Here's a disadvantage of box kites - you could get addicted!

Comments for Advantages of Box Kites

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Jul 06, 2012
Box Kites - Pros And Cons
by: Tony Sangster

Dear Tim,

1. I like the variations one can make with a box kite with more cells, or by adding delta wings.

2. There is nothing so fantastic as setting a box kite on end for a long line launch in a reasonably strong wind and releasing it and seeing it shoot up in an arc with a rapid roar of a sound.

(Hey - thanks for that! Must try it... T.P.)

3. Weight is often quoted as a disadvantage with box kites because of the need for so many spars and a strong construction. I like the idea of a pair of cross spars placed centrally in each cell protruding some centimeters beyond the longerons with either a cloth or string tensioner to each end of the longeron/cell to support the cell - as in Bobby Stanford's Stone Mountain Kite construction. That way the number of cross spars is reduced by half and the weight reduced.

(See my 1-Skewer Box design for how to halve the number of cross-pieces yet again - down to just 2! Might only be practical for bamboo and perhaps carbon fiber - T.P.)

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

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

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

Strong breeze
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