Conversion Of 2 String Delta To Single String

by Graham
(Adelaide, SA, Australia)

Q:

Hi Tim, the kite is a delta SKYSAILER so I would like to know how to rig a ..BRIDLE...? So that I can use it with one string with my grandchildren. I live in Glenelg, South Australia. The distance between the 2 rings at full stretch is approximately 38cm.

A:

This should be pretty straightforward, although I've never seen it done. I'm assuming that you still have the original flying lines. Here's my suggestion...

Select some flying line that is the same material (for example Dacron) as your original lines, but is clearly thicker. Just one line now has to take the full strain of the kite in flight. Alternatively, if you know the strength rating (for example, 80 pounds) of the original lines, get some line of any type, so long as it is rated at least 50% more in strength.

To make a single-line bridle...


  1. Measure out and cut off about 5 wing-spans length of your new line.

  2. Attach one end to one side of the kite, just as the old flying line was attached. Attach the other end of the line to the other side of the kite in the same way. Let's call this the 'bridle loop'.

  3. Measure out and cut off about half a wing-span length of line. Let's call this the 'short bridle line'.

  4. Attach one end of the short bridle line to the middle of the bridle loop, with a sliding knot such as the Prusik.

  5. Tie a Loop knot into the free end of the short bridle line.


After tying a Loop knot into your remaining flying line, you can easily Lark's Head it onto the short bridle line, making the kite ready to fly.

Some tips...


  1. If you will never need your new flying line for any other kite, you can simplify things a bit by just tying it directly onto the bridle loop with a Prusik knot. No need for the short bridle line, in other words.

  2. Test the kite in fairly light winds at first, carefully slipping the Prusik knot one way or the other until the kite climbs straight up and remains straight at its maximum height. No leaning one way or the other, which will only get worse as wind speed increases.

  3. If you are disciplined enough to only fly in light to gentle winds (below 20 kph or so) you should be able to get away with flying the kite on one of the original lines, including making the extra bridle lines. This also opens up the possibility of knotting them both together with a Multi-strand Double knot to fly on almost double the length of one original flying line.


Have fun with your new single-liner, all of you! A smooth sea breeze over the sand would be an ideal testing environment :-)

Would any dual-line fanatics like to comment, if you have ever done anything similar?

Comments for Conversion Of 2 String Delta To Single String

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Jan 26, 2014
Skysailer
by: Damien

Hi, just to add, I have had my dual string climb to full height and I simply clamp the string at the handle and use as a single string. That way if it's a little left or a little right, you can easily adjust, in your hand and it will fly high and perfect.

Above sounds like a great rig, I have set up something similar to this 'bridle line' that I attach my tail to. It's made from strong braided line for fishing and I simply have a snap swivel on my 'short bridle line' to attach.

Excellent advice guys. I'm going to try your knots n bridle for myself.

Jan 15, 2013
Lots To Learn
by: Anonymous

Thanks! It is a bit of a learning curve just to make sense so I need to do some homework eh! I will also have to get some bits and pieces. I will let you know how it goes later. Delta101

Jan 14, 2013
Bridle? More Than That....
by: Corgimas

So... Tweaking the bridle is one slight part of making a dual line kite into a stable single line flyer.

A dual line is designed to fly forwards all the time. At times it might reach the far edge of the wind window and stall but anywhere else it is going to be moving forward.

That is designed in by the shape of the kite. So... to stop/hinder that you need to change something on the kite itself. Either add a big long tail for drag or work on the design itself.

You have a skin that is already made, some framing, some fittings - and what can you do with it?

I would change the spreaders out and make them longer then flatten the kite out completely. No standoffs. Turn the 3d skin into a 2d shape. FLAT. Then I would put a spreader across the back of the kite to turn it into a basic delta kite.

Now,.this still is unstable because it is flat. I would pull the bridle off and turn it into a 2 leg bridle (1 leg a few inches from the nose down the spine and the second leg at about 2/3rds way down the spine). Make a sliding attachment point on that.

Now to get it stable you would still need to add a tail (albeit a much smaller one than the kite in its previous configuration would require) and/or force some dihedral to the wings. I would want the wings to be pulled back (away from the ground). That would force the spine down (toward the ground) and help form a shape that would evenly shed the wind side to side. You can do this by tying a line across the back from edge to edge. Make this line in such a way that you adjust the tension for different winds or flying conditions.

If all goes well the kite would not require any tail on it now in this configuration. This would also make this kite into a bit of a glider as well. Which can be fun too!

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