Hiho!
Zitat
mit einer zweischenkeligen Waage kannst Du ja nur den Anstellwinkel zum Wind ändern.
Da haben wir uns mißverstanden, zweischenklig meint 2 Schenkel waagrecht nebeneinander, nicht hintereinander!
3- und 4-schenklig mag ich auch nicht, der Drache sollte sich seinen Anstellwinkel suchen können. Aber rechts und links am vorderen Flügel angebunden sieht man bei großen PLs oft!
PL selber sieht das anders. Von PLs Homepage:
Zitat
Since 1990 we have determined that the best bridle systems for these kites is a three leg bridle; Two front bridle lines are attached to the front wing skins by loops through which the front cross tube is threaded and the lightweight rear bridle is attached only to the lower end of the rear vertical tube. This rear line incorporates a short length of stretchy rubber cord. The length of the rear bridle is adjusted until the kite just ceases to surge forward and drop back repeatedly (due to apparent wind build up) in the lightest wind which the kite is capable of flying in. We have found that if the front bridles are very long (more than 1.5 times the kite’s wingspan), the kite is much less inclined to hang to one side or the other.
Zum Einstellen des Drachens hat PL auch was zu sagen:
Zitat
Provided the skin is tight everywhere, if the kite is not flying centrally downwind of the line anchor a crude adjusting system is to shorten one side front bridle. A more sophisticated method is to rig lines diagonally between the longitudinals to bend both of the longitudinals to the left or the right as required.
Und das Thema Gestänge handelt er auch ab, klingt als ob CFK vielleicht bei großen Boxen zumindest zur Verstärkung sinnvoll wäre:
Zitat
Structurally, some tubes are much more highly stressed than others and therefore the kite will perform better if these tubes are stronger (either by bigger diameter, thicker walls or stronger and more rigid material) than the other tubes. These highly stressed tubes are the front cross tubes at the bridle points and the longitudinals at their intersection with the front cross tube.
Aber ich halte es immer noch für übertrieben, CFK zu verwenden. PL baut die Dinger ja auch richtig groß!
(Alle Zitate stammen von http://www.peterlynnkites.com/web/3large/page.htm.)
Tschüss
Tiggr (aka Marcus)