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Author Topic: Fiberglass standoffs, why?  (Read 2302 times)
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KiteChemist
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« on: October 11, 2012, 11:23 AM »

I have seen some modern kites (for eg the Veyrong from Diamondkites and the Slash from atelier) being equipped with fiberglass standoffs. It is just a tendence or there are some advantages in using this type of material for standoffs?

Also the position matters, i think, internal, external.... any ideas of the function?

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tcope
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« Reply #1 on: October 11, 2012, 11:39 AM »

Some standoffs need to bend. Fiberglass is better for this. Fiberglass is also less expensive and as there is really no downside to using fiberglass, why not.

Im not sure what any external or internal standoff is. Perhaps you are confusing standoffs with internal and external ferrules. Standoffs push the sail away from the lower spreaders. Ferrules connect two rods.

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Todd Copeland
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KiteChemist
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« Reply #2 on: October 11, 2012, 01:02 PM »

Inner standoff and outerstandoff, for kites having 4 standoffs.

No downsides even in tricks?
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ae
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« Reply #3 on: October 11, 2012, 03:01 PM »

I would suppose its because a fiberglass standoff allows for flexibility in the standoff that a carbon standoff doesn't has. Allowing the sail to adjust a little better to different situations during trick flight.
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Ca Ike
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« Reply #4 on: October 11, 2012, 04:03 PM »

The reason for fiberglass vs carbon standoffs (at least one reason) is sail tension control.  Since fiberglass flexes, when in normal flight and pressure on the sail is high the standoffs bend letting the sail flatten and billow to a greater degree smoothing out bumpy winds.  WHen  in a fade or pancake position they are stiff enough to hold the sail shape where it needs to be.  Position on the kite depends on the goal of the designer and how much shape to the tunnel of the wings is desired as well as what flight characteristics are wanted.  Moving the standoffs can lower or raise wind range. make certain tricks easier or harder, make a kite floaty or fall like a brick in a trick and change how well a kite tracks.
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tpatter
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« Reply #5 on: October 11, 2012, 04:18 PM »

Call me a pragmatist, but I think it likely has as much to do with what the designer has on-hand and access to as it does with anything else.

-Tom
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Ca Ike
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« Reply #6 on: October 11, 2012, 04:29 PM »

Call me a pragmatist, but I think it likely has as much to do with what the designer has on-hand and access to as it does with anything else.

-Tom
Probably but do an experiment and change the standoffs in your transformer to same length FG and see how its performance changes.  YOu might be surprised at the results.
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tpatter
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« Reply #7 on: October 11, 2012, 04:41 PM »

Call me a pragmatist, but I think it likely has as much to do with what the designer has on-hand and access to as it does with anything else.

-Tom
Probably but do an experiment and change the standoffs in your transformer to same length FG and see how its performance changes.  YOu might be surprised at the results.

I'm sure you are right.  I'm just pointing out that a given maker seems to use the same technique, regardless of the specific kite model. 
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6 kite tom
Krijn
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« Reply #8 on: October 11, 2012, 11:32 PM »

tom, you are not right

the veyron std has got two carbon standoffs and two fiberglass ones  Smiley
the veyron ul has got 4 carbons
and the sul has only got 2 standoffs, carbon


on the std the inner ones are white, i think it is to help during gusty winds
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tpatter
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« Reply #9 on: October 11, 2012, 11:46 PM »

Of course, it does happen from time to time you know.  Smiley
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6 kite tom
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« Reply #10 on: October 12, 2012, 12:13 AM »

Of course, it does happen from time to time you know.  Smiley
lol Tom
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KiteChemist
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« Reply #11 on: October 12, 2012, 02:47 AM »

I'll try to compare carbon and fiberglass standoffs on the Howitzer, i cut some fiberglass standoffs 10 mm longher then the original carbon ones (it bends and mantains the same distance from sail to lower spreader.

I'm a bit afraid in some tricks like the multilazy, cinique and yoyo, where the standoffs esperience compression force. But it is worth a try, fiberglass is cheap.

The veyron ul has all carbon standoffs?
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Kareloh
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« Reply #12 on: October 12, 2012, 04:51 AM »

Isn't that what l'Atelier means with Gytech Wind Absorber (Slash)?

I think it has advantages in the backflip position. When the inner standoff bends (the sail transforms into a single standoff shape, almost) it creates a larger sail area between the outer standoffs and tail. This results in better lifting capabilities (deeper backflip) without loosing recoverability.
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KiteChemist
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« Reply #13 on: October 12, 2012, 05:18 AM »

It seems to have only positive effects, it is worth a try  Smiley
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thief
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« Reply #14 on: October 12, 2012, 05:52 AM »

then you also have these:


Carbon with kevlar wound over it......they look cool...not certain how much structural benefit the kevlar adds.....

Those are on this kite:
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Kites kayaks & corgis again!!!
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