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The Rokkaku kite is a traditional Japanese fighting kite that in the 21st Century is still quite popular in the West as well. The Rok, as it's often referred to in the West, is a tailless bowed design, hexagonal in shape.
Although there are differences between East and West, Rok battles involving individuals or teams are still being organized in various parts of the world.
Here's an interesting little snippet I picked up... Have you heard it said that the Delta is the easiest type of kite to fly, hence good for beginners?
Heard it myself once, over the PA system at a
festival! Well, the whisper is... Once someone owns a Rokkaku kite, they never go back to a Delta!
With the aid of an e-book like the one over there on the right, just about anybody can make a decent kite which flies high and stable. It's satisfying to fly something you made on your own!
With the aid of an e-book like Making The MBK Dowel Rokkaku Kite, just about anybody can make a decent kite which flies high and stable. It's satisfying to fly something you made on your own!
The frame of a Rokkaku kite looks similar in shape regardless of the overall size. The thickness and strength of the spars are just scaled up or down depending on how big the kite is. Most Roks are just under 2 meters (6 feet) in height, since this is the most common size in a kite battle. My little 29 cm 1-Skewer Rok is very much the exception!
Here's some of the variations, or lack thereof, in Roks you might see flying today...
Here's a few comments on each of the above points.
Size. Most plans and write-ups for Rokkaku kites feature a vertical spar around 1.8 meters (6 feet) long. This is because the most commonly accepted size for Rok Battle kites is 6 feet. Kites bought from stores vary a bit more with one well known shop selling sizes from 1.2 meters (47 inches) tall through to 2 meters (78 inches) tall. There's that 6 foot measurement again! There also seems to be the occasional bigger home-made Rokkaku kite, say 7 or 8 feet tall, flown for recreation. And of course, the Kite Aerial Photography crowd have always loved their super big, stable Roks!
Shape. Rokkaku kites all look pretty much the same in outline, with six corners, a long vertical spar, and two bowed cross spars. There are 2 widely used proportions in particular, named 4,5,6 and 3,4,5. For example, 3,4,5 means that the kite is 5 units tall, 4 units wide, and the main body - the rectangular bit - is 3 units tall. That means the cross spars are 1 unit in from the top and bottom.
Construction. The Japanese like to refer to the kite frame as the 'bones', and the sail material as the 'skin'. Sounds logical to me! A modern Rokkaku kite might have pockets in the sail, into which the ends of the spars are inserted. Then the cross spars are bowed, and the kite is ready for flight. Not much to it really, a small price for having something collapsible and easily transportable. Browsing around, I came across 3 separate methods for holding a bow in a cross spar...
One clever idea used by some designs is where the vertical spar remains attached to the cross spars. However, it separates in the middle and so each section can be swung around parallel to the cross spar to which it is attached. In this state, the whole thing can just be rolled up like a mat. Easy.
Being able to alter the amount of bow easily, as with the 3 holed slider, is handy. This way, the stability of the kite can be tweaked to suit the conditions.
Tails. Usually, Roks are flown without tails. However, a tail can be useful in strong winds. People who suspend expensive cameras from their kite line are particularly keen to have the kite nice and stable in strong winds!
Decoration. Firstly, some modern methods... Strips of different colored material can be joined together before the outline is cut. The appliqué technique involves sticking light but colorful cut-out patterns onto the sail material. Screen printed sail material can be used. These methods can be seen in both shop-bought and home-made kites. Nearly all traditional Japanese kites were brush painted with bright colored natural dyes and black ink. The shape of the Rokkaku kite really lends itself to displaying a face of some sort. I've seen everything from people to eagles' heads!
Bridle. When it comes to bridles, there is some variation. Generally a 4 point bridle is sufficient for the standard 2 meter Rok. The bridle lines attach to the cross spars, midway between the vertical spar and the edge of the kite. Kites this size or larger can benefit from an extra 1, 2 or even 3 bridle lines attached to the vertical spar. This helps the spars resist bending out of shape in strong winds.
Sail. A traditional Rokkaku kite used washi paper, which was hand-made. These days, rip-stop nylon or Tyvek is a common choice for the larger kites. Smaller kites made in workshop sessions often just use plastic or tissue paper.
Kite shops stock Rokkakus which these days double as flying art works. They really look great in the air! A good example is the HQ Rokkaku Kite sold through Amazon. These kites are very stable and fly in light to moderate wind speeds. A big one like this can cope with fresher winds as well.
Even more so than a large diamond, the Rokkaku kite is pretty versatile. Roks are used for...
The Rokkaku kite battle originated in Japan, like the kite itself. In the West, these competitions are organized for either individuals or teams. The idea is to force your opponent's kite to the ground. Here are the three methods used...
It's not uncommon to see a Rok battle at a kite festival. Sounds like a lot of fun!
My collection of real-life Rokkaku kite stories is worth checking out!
Illustrated with photos and videos, of course.
With their strong lifting ability and stable flying characteristics, it's no wonder people use a Rokkaku kite for hanging out their line laundry. You know, spinners, streamers, even big inflatable creations that float and dance in the wind. If you've been to a kite festival you would have seen this kind of thing for sure. Airborne line laundry makes good subject matter for KAPers too.
Talking about KAP, or Kite Aerial Photography, the largest Rokkakus are commonly used for lifting camera rigs. My guess, in 2007, is that as digital cameras get better and lighter in future, these guys won't need such huge kites to get decent images! We'll see.
Here's a delightful picture of a decent sized Rokkaku kite...
Photo courtesy of
Now here's an interesting lifting application. Some guys working for the Institute for Marine and Atmospheric Research Utrecht (I.M.A.U.) have used a couple of Roks for scientific purposes, way down in Antarctica. Due to the extreme cold, these kites were specially designed to be rigged while the flier is wearing thick gloves. Their 2 meter and 1.5 meter Roks were used separately or stacked together, to provide the required lifting force in a variety of wind conditions. The payload was atmospheric measuring equipment, hoisted to the considerable height of 600 meters (2000 feet).
Did you know that kites have been rescued from trees, by other kites? Neither did I until very recently! Kite rescue is done, I presume, by flying under the flying line of the stuck kite. If the lines cross fairly close to the tree, I can imagine how there would be a good chance of lifting it out of the branches and leaves. How about that.
At this point, I haven't yet waded through any big books on Japanese kite history, so I haven't got much specifically on the Rokkaku kite. However, there are a few snippets I can share with you...
Most artistic Japanese kites were developed in the Edo period from 1603 to 1867. At this time, Japan was closed to foreigners. Different designs originated from different regions of the country, including, presumably, the Rokkaku. Since the earliest times, some Roks have been adorned with the faces of heroes from Japanese folklore. In 1649, the Sanjo Rokkaku fighting kite festival began at Niigata Prefecture in Japan.
There is actually a Rokkakudo Temple located in central Kyoto. Since the rokkaku
part of the name refers to the hexagonal shape of the temple, there
seems to be some connection. Only historians would know which came first
- the kite or the temple! Sanjo is a location in Kyoto Prefecture,
hence the traditional name, the Sanjo Rokkaku.
The video below shows our own Dowel Rokkaku kite flying in a gentle late evening breeze...
The "Making Dowel Kites" e-book has this kind of kite and many others in wooden dowel, tape and plastic. A handy approach is to just print out the pages for the kite you want to make next. The e-book is also handy for working off-line on a laptop or other device.
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