shlow wrote:To satisfy my curiosity... I noticed that different kite model has front lines that are position at different locations along the leading edge.
Appreciate some one who can enlighten me on the changes to performance of the kite if we are to move it around. For example 1. closer to the center of the kite, 2. Two bridle points on the same side moving closer together.
Thank you in advance all your inputs as it will help in my understanding of the kite.
Hi. I am not an expert, but this is why I think it is so important for kite designers to actually kiteboard when they design kites.
When you have two different front attachment points, look at the kite from front to back and not from the front. If you move the attachment point forward towards the LE, you will need more bar travel to power and depower, but bar pressure will go down. If you move the attachment point towards the trailing edge, you need less bar travel but a bit more bar pressure. This is why they put pulleys on the front, because then you'll have an attachment point that is dynamic, which takes off some of the direct feel you might want. It works like a lever.
Moving the attachment point towards the trailing edge will also open the kite up a bit more, and the kite will feel like it has more power...especially in the low end. The kite will sit a bit deeper and it will move turn a bit more around the center of the kite.
Though there are quite a few variables, like number of attachment points, and to split the load on the LE, bar pressure, and needed bar travel, to general balance of the kite, and how it turns....there is a bit of skill involved to this process in terms of finding a good balance in terms of feature prioritization. The way the bridle is attached to the kite also helps stability across a range of uses. Look at the Ride from Naish. Because of how the the bridle and only two struts works together it is designed to bleed a bit of power when gusts hits the kite. The kite will visually become more C shaped, and it makes the kite fell more stable across the wind range.
Wrong line adjustment can equally ruin a kite (at least did not help a flawed design). I know of two kites where this was a major issue (not Naish). They both had a tendency to fall out of the sky. One of them ended up being sold at 70% off around mid-season, and the second was issued a carbon rod that you stick down the back of a center strut to keep the kite from flying too far forward.
There is a lot more to this, but this is my take on it.