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26 August 2011

Update: Interesting SAWDIS Kite Project to promote science and technology

With the weather being fowl this last couple of days, it was ideal to start work on this post on how to build a DELTA-CONYNE KITE.  I received several requests to make the plan availble as many would like to build this kite for their grand children.  I drew the plans for this kite on the 16 June 2008.   Here are the dimensions of the kite.


(Click on image for large view.)

The kite is 2.8 meters (9 Ft) from tip to tip. All measurements in centimeters.  For those interested here is a short overview of the kite:

The Delta Conyne is a kite which gained popularity in the late Seventies and early Eighties. It is a hybrid kite, being a combination of a Conyne, which is a box kite, and a Delta. The kite is very stable and will fly well in a large variety of winds. The lifting power of a Delta combined with the stability of a box kite, these kites are always the fastest climbers in altitude races. This kite is capable of lifting large payloads and is truly impressive in the sky.

In a moderate to stiff wind it flies well and will lift a reasonable payload. To give you a rough idea say the payload weighs in at roughly 820 grams. I can fly the Delta Conyne in any wind from about 10 km per hour but to lift the payload its nearer to 15 km per hour to be safe. Years ago I invested in a portable anemometer which will now come in very handy.  Now building this kite was real fun and guess what I had to sew the kite myself. The YL point blank refused and I had to get behind the sewing machine. Learned something new and can now operate a sewing machine.........yep and this does not make me a lesser man. At least I can now mend my own clothes!!

This project has really focused my attention on flying kites as a past time. I have learned a lot about flying kites and also the many uses for kites. Now you may ask why fly a kite? Each flight is a journey of exploration. Each flight is different. And the flyer is not merely a passive observer, either. The responsible flyer is in control at all times (or should be): letting out line; not letting out line; winding line in - to catch lift, turn, take out more line, move to another spot in search of a thermal - all done deliberately by the flyer in control. Kites are controlled by pulling in or letting out the line. With the right kite for the wind, and the right line, it's very relaxing and rewarding. Flying a kite for an equal number of hours showed a cost effective means of reducing stress. It was also the best in terms of overall effectiveness, regardless of cost. A further bonus is to combine kite flying with Amateur Radio. Marconi lead the pioneering actions as far back as 1901 - Guglielmo Marconi used a kite to lift an aerial to make his historical radio link between North America and Europe.
Enough of history, I must now sit and wait for the weather to be conducive for kite flying. The next step will be to manufacture a Picavet. The Picavet will provide a level platform for the science payload.

The maiden flight was a great success and I am impressed by the handling and lifting capability of this kite.    My thanks go to Johan van Aarde for the photo's and I am sure you will agree that they are of outstanding quality.   Here are some of the photos that were taken of the Delta Conyne 1 in flight.





Images: Johan van Aarde (Click on images for larger view.)

Next Activity:  Constructing the PICAVET.