The pulley mounted on the wingtip of a Hybrid kite usually connecting the backlines to the front bridle I think is used to stabilize the middle of the wingtip.
1. Does the pulley increase the bar pressure?
2. If I removed the interconnecting line and replaced it with a small wingtip baton will it lighten the bar pressure without affecting the turning of the kite.
3. If the backlines are moved forwards (with the wingtip baton still installed), will the bar pressure be improved without affecting the turning of the kite.
I know every kite is different but the principles must still be the same. I want to reduce the bar pressure of my kite so that I can avoid tendinitis by mid season as last season I had to reduce my kiting time down to about an hour at a time. There is a predominant wind that blow here making my left arm the arm that I use the most plus less bar pressure less fatigue.
Modern bridle kites ( with multiple attachment points around the LE ) are NOT so easy to modify cause moving / shortening / extending any of these lines requires to adjust the rest of them
But as a hint :
1) Back lines or steering lines are for .... Guess what : steering so , if your kite has a bridle , means that the pull or pressure is where the center of the pigtail is placed .... If you move it forwards , your kite will turn slower , move it backwards and it should turn faster .
2) Front lines are responsible for bar pressure and de-power abilities , if you have too much bar pressure ( Ion 2 ? ) is cause the front lines attachments are to high , but I guess you have lots of de-power ? .
IÂ´m not an expert regarding aerodynamics so canÂ´t explain the proper definitions but Imho it has to do with the angle of attack of the kite ....
Before you start fussing around and make ( for sure ) a mess with your bridle , you better take some pics , make a diagram and write down ALL measurements so you can go back to stock if shit happens ...
Some folks have been experimenting with 5th lines on SLEÂ´s / Bows around with excellent results since the 5th line is the best stabilization you can find to keep the arc in place .... then you can eliminate all pulleys ...
Going back to your original question , to decrease the bar pressure ( means your kite is a 100% front line flyer ) you need to lower the front lines pivot angle ? dont know how to explain it ... but I hope you get the message ..... but forget adding extensions ....
richswing wrote:I know every kite is different but the principles must still be the same. I want to reduce the bar pressure of my kite so that I can avoid tendinitis by mid season as last season I had to reduce my kiting time down to about an hour at a time.
loose the cross-bridles and modify rest of bridles. i did it on my '07 airushflow 14m. before modification bridles were just like on your picture and bar pressure was huge. now this bird is main lightwind kite with bar pressure just enough for feedback, turning ability stays the same but now its much easier.
front lies connected to v-line through the pulley. wing tip pulley is used for v-line connection to the le
Adjusting bar pressure is simple. To reduce bar pressure, you must move the tow point back toward the trailing edge. The easiest way to do this is to shorten the outer most lines on the front bridle (the one that goes from the leading edge to the "arch" line). I suggest starting with about 2cm. You can experiment with this easily by tying a clove hitch around a small piece of plastic tubing (or a stick you find on the beach). Use a clove hitch so that you don't have to detatch the bridle line. Make sure and do it to each side equally. Try different diameter sticks until you get it perfect, then you can make a new line the right length. Very easy.
Don't take it too far or your kite won't depower.
Your kite will still have the same arch. Arch bridles are brilliant in that they sort of self-adjust to small changes in length to one line.
To do the opposite (increase bar pressure), just add a small extension to this same line.
Is this the correct bridle line highlighted in BLUE, if so I have been playing with the line length to the extent of shortening it by up to 8cm. I have picked up a slight change in bar pressure. I think if you go to short it will reduce the bottom end range of the kite by making it more C shape???
Without knowing which kite / brand / model you have , we can only guess . Your drawing dosent help much .
If your kite has a rounded wingtip you canÂ´t go with a single steering line as on the pic , the Airush is a V shape ala delta shape and a single line can work very good , but if the tip is ala Waroo for example a single line wont work specially if there is no attachment around the centre .
Each kite ( even between same brand models ) got a different bridle set up so, what it may work on a A kite may not work on a B kite .
Last edited by panchito on Tue Dec 16, 2008 3:51 pm, edited 1 time in total.