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Author Topic: HQ crossfire 4 keeps collapsing  (Read 1502 times)
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wellemberg
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Location: Ringsted Denmark

« on: August 22, 2012, 04:43 AM »

Ive tried almost any kind of adjusting on my crossfire 4, but it keeps collapsing, and does so quite often, what is it that im missing here???
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indigo_wolf
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« Reply #1 on: August 22, 2012, 09:04 AM »

    [list=1]
    • What kinds of winds are you flying the Crossfire in?
    • Is it a first or second generation Crossfire?
    • Have you checked the kite for any tangles in the bridle?
    • Have you checked for damage to any of the cell walls (you should be able to look through the air inlets to inspect it)?
    • Does it collapse in any particular place in the wind window?
    • Are you flying in a location that is free of obsctructions and unlikely to create "wind shadows" or areas of "dead" air?
    • Are you flying with the stock flying lines?
    • Is there any chance that you could post video of the kite in flight when it collapses?

    ATB,
    Sam
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    wellemberg
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    Location: Ringsted Denmark

    « Reply #2 on: August 22, 2012, 11:53 AM »

    Its a second gen crossfire.
    I fly in winds about 5 to 7 meters.
    There are no damages or tangled bridles anywhere.
    It usually collapses around 12 o clock, but it "tucks the ears" on almost any place in the window.
    Ive tried both the stock lines and some other lines ive got, samesame.
    Denmark is a very small country, so it is actually quite hard to find a spot that is completely free of obstructions, so there might be a few gaps n the wind.
    And last... I dont have a video, but heres whats happening...
    It either tucks the ears and make a butterfly shaped cloth and falls to the ground, or folds the leading edge under the kite, kinda turning it inside out, and then most of the time falls the ground!
    Hope this helps!?
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    indigo_wolf
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    « Reply #3 on: August 23, 2012, 08:56 AM »

    5-7 meters per second is well within the Crossfires stated wind range of 5-26mph  (2.24- 11.62 mps).

    If the canopy is collapsing at 12 o'clock, it is possible you are experiencing what is referred to as "overflying the wind window.'  The kite retains power until it reaches 12 o'clock, then if it goes any further, the LE is canted out of the airflow and the kite immediately loses power.  It is possible to recover by "tapping" on the brakes and drawing the kite back into the powerzone.  What you don't want to happen in this scenario is to have the kite fold in on itself into a ball, fall into the powerzone, and then re-inflate, suddenly reaching full power.

    Tip-tuck can occur anywhere (to a degree), especially in turns.  However, if there is sufficient wind and no problems with the kite, it shouldn't occurr to the degree where it drops the kite out of the sky.

    Anytime  the leading edge folds over the air inlets can become partically or fully covered and the kite will lose cell pressure fairly quickly.... which will then take it out of the sky.

    Is there tension on the lines prior to the kite collapsing or do the lines go slack at any time prior to the kite collapsing?

    ATB,
    Sam
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    wellemberg
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    « Reply #4 on: August 23, 2012, 10:13 AM »

    Theres plenty of tension, Ill have to keep in mind, NOT to fly too high so that the kite goes over the edge of the window! But it seems to me that the Crossfire is VERY unstable, compared to the other pwerkites ive flown!
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    Gamelord
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    « Reply #5 on: August 23, 2012, 11:45 AM »

    The Crossfire is a very aggressive higher aspect ratio kite.  It is designed to accelerate through the window very fast.  In gusty / choppy winds, this can be a problem as the kite will accelerate and then kind of lose pressure in gusts.  One of the ways to help control this beast is to increase the amount of tension you have on the bottom/back/brake lines. This will slow the kite down a little and not allow it to explode forward so quickly and collapse.  Also, make sure you have some very high quality flying lines.  On cheaper lines, they will give the kite a bungee type feel and the kite will be a nightmare to control - very similar to what you are describing.  When the kite starts to reach the edge of the window, you do need to apply more brake line tension to keep the kite from overflying.  Also, because of the higher aspect ratio design, it will fly well past the edge of the window very easily, which will allow the kite to feel very powered up and then collapse.

    Higher aspect ratio kites like the Crossfire II, Yakuza GT and the Vapor do require more kiting control skills to fly static and can be a handful until you get them figured out.  They work best on a buggy or board where you can keep moving the kite.
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    wellemberg
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    « Reply #6 on: August 23, 2012, 12:14 PM »

    I actually use the crossfire with a buggy from time to time. Ive flown kites with even higher AR than the crossfire, and have never had this problem before!?
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    sunsetflyers
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    « Reply #7 on: August 23, 2012, 03:14 PM »

    i had same problem on mine it doesn't like any brake i loosened mine to the point that i had to point handles straight to great for jumping a little to small  bring down and mainly fly on top lines great buggy engine and it also has some lift not great for jumping a little to small
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    Steve & Sherri
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