Sunday, February 7, 2010

Build: Yatko 3 -- sail and spars

I discovered I could not get two kites out of the blue hand-made Japanese paper I bought without scaling the kite's dimensions down. After scaling Yatko 3 up by 10 percent, I wound up with a 30-by-22-inch kite.

I'm using bamboo about twice as thick as previous Yatko kites I've built and switched to using a glue gun, which is dries much faster, but isn't always easier to use than a tube of liquid glue.

I also changed the horizontal spar from previous constructions: I've left a barb on one end in hopes of using it as an anchor for the bow line, which you can see below.

Yatkos use a tension line to bend the horizontal spar that creates a curved sail to act as an airfoil.

So far, I've cut the paper, sized the bamboo and tacked the spars in place. She's looking real good!

Here's a comparison of Yatko 2 and 3. I'm hoping the larger, more durable sail of Y3 will make for a more stable flight.

Since I've used traditional material, I think I should attach a silk or near-silk streamer to stabilize the kite.

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