p8ntballsk8r
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Depower in the air
I'm curious what the effect is of either pulling the bar in more, or pushing the bar outwards when you are in the air. This question is for after you
have done a pendulum, jumped and pulled in the bar.
I'm guessing the bar all the way in will give you the float time. Someone please varify that.
Another question is not with the bar but with the powerline? I think that's what it's called. I'm talking about the adjustable pully / line that
changes the amount of power the kite is generating.
In a lower wind situation, my assumption is you want it all the way out for max power, because inversely in a very high wind situation, you want it
cinched all the way in for minimum power. Are these assumptions correct?
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carltb
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when you jump you pull the bar in to generate power and lift. keep the bar pulled in until you reach the top of the jump, then let the bar out,
redirect, then just before touchdown pull in the bar again to soften the landing.
thats the gneral rule but it depends on what you are actually flying
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dylanj423
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as far as the power line you referenced, that is the "trim strap"... different bars have different systems, so it would be impossible to say without
knowing what you are using
WHAT I FLY:
Flysurfer Soul v2 12m, Soul 15m, Soul v2 21m
Flexi Rage 1.8m, Jojo RM 3m, Flexi Blurr 3.5, Flexi Blade 4.0m, Flexi Blade 4.9m, Flexi Blurr 5, Jojo RM 6m
WHAT I RIDE:
Kite Skates, Libre Full Race, GI Conflict 106, OR Mako 140, Spleene Door 159
What I Am In The Market For: Peter Lynn Vapors, Weatherproof Kite Buggy Bag for Libre, PL or Flexi Small Buggy to Tow With, Flexi Pro Link Handles,
Flexi Lines, Flexi Kite Killers
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Bladerunner
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It is strange but in low wind you are best off setting your kite to fly hard on the front lines. The kite flies faster that way. Pull in to assist in
turning , out to speed through the window.
Depower is a deceptive term.
It is better to think front line and back. Front lines the kite flies faster and farther in to the window. Back is slow and kite falls back in the
window.
Kites: 2.5m Profoil , Quadrifoil XL kitesurfer, NPW 5 Danger.
Flexifoil: 1.7m Sting, 4.9m Blade 3, 9m Blade 2.
Flysurfer : 19m Speed 2 SA, 7m Pulse
Peter Lynn :18m Phantom, 15m Synergy, 10m Synergy, 1200 Farc, 460 Sarc, 130 Tarc, 5m Peel, 4.2m , 6.4, 8.5 C-Quads, 3.5 LS2 single skin.
Rides: Flexi / P.L. Frankin'Buggy , Shaped + straight skiis, sand skis, Coyote blades. Core 95 ATB. RKB R2 ATB .
Ken (K2)
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p8ntballsk8r
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Thanks carl for clearing most of this up.
Where does Angle of Attack fit into all of this? When you pull in on the bar, my current understanding is you increase the AoA and this is why more
lift is produced and you are able to get airborn. Pushing out the bar has the inverse effect of reducing the angle of attack, hence producing less
lift and giving you less float and fasting falling to the ground.
As for the Trim Strap, My guess is the same way in that you are changing the AoA of the kite, down to decrease it (since that gives less power) and up
to increase the AoA (more power)
Are these assumptions correct?
Carl - it makes sense that you pull in on the bar just before landing again to soften up the landing, but it seems as though you would want to keep
the bar all the way in to float down as gently as possible from your highest point in the air.
One last question, is it possible when increasing the AoA to do so too far, to the critical angle of attack, and to stall the kite while you are in
the air putting weight on it?
If it matters, I'm flying an Ozone Frenzy
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dylanj423
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dont worry about the angle of attack too much, it is a very scientific and technical explanation that required clarification by an aviation student
for me, and the effect of the AOA depends on the profile of the kite, and how some other factors come into play... more info than you really need...
worry about leading edge and trailing edge... when you pull the bar in, it pulls the lines on the trailing edge, this gives you the pop into the air
(lift)... again, up and down in respect to the trip strap depend on which trim strap you are using... for some, down is powered up, and some up is
powered up,...
when the trim is all the way OUT, the kite is catching more power (this can be UP, or DOWN, depending on which system in use)... when the trim is all
the way IN, most of the power is going to the power lines that go to the leading edge, this is the least powerful setting (and also can be UP or DOWN,
depending on which system you are using)
using the words IN, OUT, LEADING EDGE, TRAILING EDGE are universal, each bar has its own system, and we dont want to give you the wrong answers and
have you act on our info wrongly, that can hurt you...
WHAT I FLY:
Flysurfer Soul v2 12m, Soul 15m, Soul v2 21m
Flexi Rage 1.8m, Jojo RM 3m, Flexi Blurr 3.5, Flexi Blade 4.0m, Flexi Blade 4.9m, Flexi Blurr 5, Jojo RM 6m
WHAT I RIDE:
Kite Skates, Libre Full Race, GI Conflict 106, OR Mako 140, Spleene Door 159
What I Am In The Market For: Peter Lynn Vapors, Weatherproof Kite Buggy Bag for Libre, PL or Flexi Small Buggy to Tow With, Flexi Pro Link Handles,
Flexi Lines, Flexi Kite Killers
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carltb
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looks like you have the aoa sorted.
the reason why you let the bar out at the top of the jump is firstly to stop the kite from stallng and secondly, it flys faster so makes the redirect
easier.
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p8ntballsk8r
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I actually am an aviation student. Air Traffic Control, but I got my pilots liscense last year, so I understand AoA just fine.
In general, do lower winds not allow the kite to move as fast? I had some trouble today static jumping in winds that weren't really strong enough to
jump in. When I could get enough pull to get airborn with some hangtime, I didn't have enough to get the redirect back, and my landings were harder
than they should have been. I do have a bigger kite - 12m so this could be in part, but I'm guessing it was also due to the low winds which where
between 12 and 14 kts.
There were actually a few times where I had to run backwards to get the kite's airspeed up when the corners started to tuck and the kite began not to
respond
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Bladerunner
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OOPS ! Coffee , need COFFEE!!!
Kites: 2.5m Profoil , Quadrifoil XL kitesurfer, NPW 5 Danger.
Flexifoil: 1.7m Sting, 4.9m Blade 3, 9m Blade 2.
Flysurfer : 19m Speed 2 SA, 7m Pulse
Peter Lynn :18m Phantom, 15m Synergy, 10m Synergy, 1200 Farc, 460 Sarc, 130 Tarc, 5m Peel, 4.2m , 6.4, 8.5 C-Quads, 3.5 LS2 single skin.
Rides: Flexi / P.L. Frankin'Buggy , Shaped + straight skiis, sand skis, Coyote blades. Core 95 ATB. RKB R2 ATB .
Ken (K2)
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Maven454
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Quote: | Originally posted by Bladerunner
Thank you for clearing this up.
I feel that Jonesband 1998 will be even more frustrated when he finds he has been nothing but entertainment to us. His actions will have NO effect on
this forum or the people who use it.
The people on this site are savey shoppers or beginers who have found the right place for advice. The good advice and gear will still freely flow !
Poor Jonesy is spinning wheels |
Pretty sure you got this on the wrong thread Bladerunner.
"I gave up on wind speeds... its either crappy, gravy, epic, or stupid... in that order"
--Drewculous
Ozone: Imp III Quattro 1m and 1.5m, Flow 2m, 3m, 4m, and 5m.
NAPKA# US454
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Maven454
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Quote: | Originally posted by Bladerunner
OOPS ! Coffee , need COFFEE!!! |
You've got to stop posting first thing in the morning...
"I gave up on wind speeds... its either crappy, gravy, epic, or stupid... in that order"
--Drewculous
Ozone: Imp III Quattro 1m and 1.5m, Flow 2m, 3m, 4m, and 5m.
NAPKA# US454
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ragden
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Flysurfer Speed 3 15m DELUXE
Flysurfer Speed 3 12m
Flysurfer Psycho4 8m
Peter Lynn Buggy
Twisted Velocity (164)
Spleene (Monster) Door 164x50 (for sale?)
FlyDoor XL (2013)
2011 Spleene RS 132
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acampbell
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Quote: | Originally posted by p8ntballsk8r
Thanks carl for clearing most of this up.
As for the Trim Strap, My guess is the same way in that you are changing the AoA of the kite, down to decrease it (since that gives less power) and up
to increase the AoA (more power)
Are these assumptions correct?
One last question, is it possible when increasing the AoA to do so too far, to the critical angle of attack, and to stall the kite while you are in
the air putting weight on it?
If it matters, I'm flying an Ozone Frenzy |
I like to think of the center trim strap as the transmission and the bar as the throttle. Have the kite in the wrong gear and hit the gas and you
will stall the kite.
In light wind, flying statically, the de-power kite will likely behave "bass-ackwards". Pull the bar in to "create more power" and all you do is kill
(stall) the kite. Then, almost counter intuitively, you let the bar all the way out and trim strap in for "max-depower" and the kite is able to
recover from the stall, begin flying, pick up speed and actually create power.:puzzled: :puzzled:
Now once you put the rig into motion on a board, skis or in a buggy, then all is right with the world as the rig feels the apparent wind and works as
advertised.
In the buggy on a beam reach park-and-ride, I like to set my center strap (gear shift) such that right when the bar gives enough resistance to the
pressure of a few fingers is when the back wheels break loose. Then the bar, from all the way out to that point pulling in, is acting as my throttle
for buggy speed.
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