This kite started life as a sketch by John Spendlove in European Kiteflier, a short-lived magazine in the early 80’s. He invited people to come up with a kite that had the outlines of a regular  14-sided geometric body, more scientifically known as a tetracaidecadeltahedral. But let's just call it tetracaideca, that is already a mouthfull. One of the few kitefliers that responded to his question was my brother Frits. The kites that Frits and John built where mediocre fliers, mainly because the weight of the construction was to high. The construction of the kite depends on the stiffness of the longerons. Twenty years ago the kite was framed with wooden spars, and the kite was either too heavy or too fragile. A winged version was developed by my brother to distribute the forces better over the longerons.  Nowadays stiffness is not a problem, I redesigned the original kite with a carbon frame, and now it is an excellent flyer in light and moderate winds, but as many compact box kites it can tumble out of the sky if the wind suddenly drops.

click on the picture for larger image:

This plan describes the original shape of the box kite. The sketches at the end show some varieties made in the past years. For the winged versions simply sew an extra triangle  to the longerons and extend the cross spars.

 Sail construction:

Use a low-strech ripstop fabric. Draw the panels A, B1 and B2 on the fabric in the quantities as shown in  the plan, and cut them out along the outer lines. Sew panel B1 to panel B2 (6x) with a flat seam. Now you should have six equilateral triangles of fabric. Sew two of them together (3x) to form a diamond as  shown in the plan. Sew reinforcement patches and loops of edge binding tape on the indicated spots.  Sew the short edges of panel A together (2x). Hem the diamonds and panels A. Sew panels A onto the diamonds and sew tunnels as shown in the stitching scheme detail. 


Longerons 8 mm carbon tube between points:
Place a T-joint, or vinyl tube with a hole,
in the middle of each longeron, at 
points D2, E2, and F2

Cross spars 8 mm carbon tube between points:

Edge support spars 5 mm carbon
tube between points:
A1-B1     A2-B2
B1-C1     B2-C2
C1-A1     C2-A2


Some varieties made by several dutch kite flyers:

click on the picture for larger image:


Pass the longerons (85 cm, 8 mm carbon tube) through the tunnels, placing a T-joint at the middle of each longeron. Cut a hole in the middle of a 7 cm long piece of vinyl tube with a 5 mm inside diameter (6x). Pass the end of the longerons through the holes. Fix the ends to the fabric with arrownocks and loops of braided line. Join the free corners of the diamonds in pairs with a 20 mm loop of braided line. Insert one end of the cross spars (8 mm carbon tube) into the T-joint and hook the other end with an arrownock into a loop. Insert the 5 mm carbon spars into the vinyl tubes to tension the edges of the panels A. 
Tie a 20 cm long piece of flying line (appr. 50 Kgf ) to one end of a longeron. Tie  a loop or a ring at the other end of the line. Tie the cross spars to each other at the cross point before flight.
Enjoy your new kite!

Do not publish or redistribute these kites, plans and pictures without my permission.
The plans are available for private non-commercial use only. Geert DD © 2001.