converting 2line to 4 line

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converting 2line to 4 line

Postby spyder » Wed Jan 03, 2001 4:46 pm

Setting Up The Wipika Or Naish As A 4 Line Kite

ADVANTAGES
The four line Wipika turns much faster and tangles less than the two line. The reason it tangles less is because if you crash bad or the kite folds into itself the two line can tangle itself around the white guide pulleys at the ends, the four line wont. Follow the instructions on Wipika?s page.

MAKING THE VEE
The vee line is made out of line similar to your leader lines but about half the diameter and more flexible. You can get it from a sailboat sailmaker. The small pulleys that will run inside the vee look similar to the black pulleys currently on your wipika but are rated for loads of at least 200 kilos. Tie the ends of the vee lines (3.2 meters long for 3.0 kite, 4 meters for the 5.0 kite, and 5.2 meters for the 8.5 kite) to the end tab and bottom tab on each side of your wipika and let the pulley run inside the vee. To the pulleys attach the old 3 inch cinch strings from your bridle so you can attach the bottom lines which will go to your bar ends.

MODIFYING THE BAR
Credit for this type of setup goes to Don Montague of Naish kites. Prepare the bar by drilling a hole in the perfect center to accept a 1/4 inch stainless steel eyebolt or eyenut big enough for a third leader line to slide through. Note in the picture of the third leader line, the flying lines are attached at different knots - this is because of unequal line stretch. Marine shops should sell eyenuts which you can thread with a stainless steel carriage bolt. Its good to drill this at 90 degrees to your winding posts so the posts face away from you while sailing. Use locktight to keep it on.

PUT IT ALL TOGETHER
Now attach your upper lines to the upper tabs on the kite (you must make two more cinch strings for this) and run them to the third leader line in the center. The length of the center leader line will be the length of your outside leaders plus the length of the vee fully extended to the pulley (pulley pulled taught away from kite). If you attach all the lines and pull them taught, the lines plus the three leaders should be equidistant from the kite which has been folded in half and has the ends matching (Now is a good time to check unequal stretch of old bottom lines. At the other end of the center leader line run it through the eyebolt or nut and tie it on the other side of the eyebolt with an overhand knot with enough line left over to create a 3 or 4 inch harnessable loop lined with 1/4 inch PVC tubing. It is a good idea to sink the knot into a 3/4 inch plastic ball on your side of the bar to prevent the knot from sliding through the eyebolt/nut. This loop is a mini harnessable loop inside your regular harness loop which you can hook into to depower the kite. When you hook into the mini loop you are in effect pulling the top lines and you can tether the power. In really overpowered conditions you can actually hook into the mini loop with arms fully extended turning the kite

TESTING
Now test your kite. Where the top lines attach to the center leader you should tie a series of about 5 knots on the center leader for adjustment. One knot where all lines are equidistant from the kite then two above and two below that knot at one inch intervals. Go with partner to the beach and launch the kite. With the kite at top/center of the window, pull on the center mini harness loop you made. The kite should start to depower. If you have to pull more than 2 or 3 inches you need to move the top lines to the next adjustment knot closer to you. If the kite is already luffing you need to move the them away from you. That?s why you need a partner since you may have to land and launch the kite several times to get it right. Also the setting may change with windspeed and you can make quick adjustments similar to how you used to do with the bottom lines of the 2 line bridle. All this may seem like a hassle but its worth it. Just print this out and take it step by step slowly. You never fly with a bridle again!

NAISH KITES
For Naish kites there is no need for the vee. Tie the top lines directly to the top tabs and the bottom lines directly to the bottom tabs. The end flap can either be folded over and tied to the small strut nozzle or rolled up and affixed with zipties at the pre-made holes. The center leader will almost be the same length as your outside leaders. Be forewarned if you buy Wipika lines for the additional set. They are a true 30 meters while the Naish ones are 30 meters including the leader lines (flying lines about 27 meters). You will need to make the center leader either approximately 3 meters shorter or longer than the outside leaders depending on which lines you put where. It is not recommended to set up the Wipika this way, the kite flies even faster and reacts unpredictably in the low-center of the window. It flies just about as fast and much smoother with the vee.

PROVEN
This setup is Hawaii tested and how the Naish guys including Robby do it. The only difference is they run the center leader directly through the bar by drilling it and lining the hole with eyelets. I was getting center leader line wear this way so I prefer the eyebolt or nut.
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spyder
 
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