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Author Topic: upgrading single line kite - DELTA  (Read 1320 times)
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badcloud
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« on: February 14, 2011, 05:27 PM »

Hello - I have some PREMIER single line 11 ft. kites - all frammed with 6mm tubes - what am i getting into if I reframe the kite with 8 mm tubes.

Other than costs, what are the pros and cons .

thanks scott maddox
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thief
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« Reply #1 on: February 14, 2011, 05:59 PM »

stronger. stiffer. might weigh a little more.
will 8mm rods fit those sleeves?
sounds like a good project!
good luck!  share the results!!
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Lee S
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« Reply #2 on: February 14, 2011, 06:31 PM »

What don't these deltas do now that you hope they will do if re-framed? 
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kiteguy
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« Reply #3 on: February 14, 2011, 06:50 PM »

For SLK deltas I prefer the FG tubes.  I feel that the flex in the FG absorbs the wind gusts better.  I fly in very gusty conditions here in Kansas.

I do have a 9 ft delta framed in .21 pultruded carbon rods.  It is an excellent low wind flier.  I like to put it as the sun is going down.  The winds seem to drop quickly at that time of day.  As do summer time temperatures here in the mid-west.
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badcloud
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« Reply #4 on: February 14, 2011, 08:17 PM »

This thought pattern started tonight , after a fine meal and a great cigar - I was looking at the stars and i noted a perfect DELTA configuration with 3 stars that stimulated the brain cells- i have a few 11 ft. PREMIER deltas - framed with 6mm carbon tubes, with wind gusts and tails on each side , the leading edges bend making me 1) pay more attention and 2) making me reel in the kite a bit - just personal , so structual bending/stress to the kite  bothers me in this case.  The project could be fun as well.

Using FG tubes is a fantastic option and I appreciate each of your offerings. Kites with graphics, I tend let out about 150 to 200 ft. of line - folks love to see that - Will keep you guys posted.  Best to each of you for V day. scott
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mikenchico
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« Reply #5 on: February 14, 2011, 09:26 PM »

If you are experiencing excessive bending a re-frame might be in order, but the flip side is Delta's depend on that bending for stability, if you make the frame too stiff you may experience instability. Dan Leigh has a lot of information on Delta designs at his website, and one of the points he makes is Delta's require flex for stability. Google it if you want to do little research into design before tackling the project, I can't link direct since he does sell his kites.

We have a Premier 19' Delta that experiences too much flex under high winds in my opinion, especially in the spine. But it works well in in lower winds so I hesitate to change it. But I think I could stiffen the spine and modify the keel to provide it better support without altering stability since I believe it is the flex in the wings that enhance stability. My other option is to not fly it in 20 mph + winds which is a little foolhardy anyway but the occasion called for a patriotic display and it is our only red, white blue kite.

The nice thing about the suggestion to use Fiberglass tubing is that they do fit inside of each other so you could conceivably slip a second tube into the first thus increasing stiffness for high winds and retain a lighter more flexible frame for lower winds.

« Last Edit: February 14, 2011, 09:33 PM by mikenchico » Logged

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thief
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« Reply #6 on: February 15, 2011, 03:33 AM »

The big 20's do flex a lot...the only one that did not flex in that size was the Raptor20 by Joel Scholz -NOT THE GO FLY ONE!!!! but Joel used 1" solid fiberglass...

Premier 11': are they carbon rods or fiberglass???I would think that they are fiberglass to keep the price down.....
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indigo_wolf
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« Reply #7 on: February 15, 2011, 05:30 AM »

Premier 11': are they carbon rods or fiberglass???I would think that they are fiberglass to keep the price down.....

Premier 11 footers are a mix of carbon and fibreglass rods.

ATB,
Sam
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badcloud
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« Reply #8 on: February 16, 2011, 05:53 AM »

evaluating the project............... nothing to lose
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greenbulletblues
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« Reply #9 on: February 21, 2011, 07:15 AM »

I have/had a small delta that would not fly right. I saw this post about the frame being too stiff.  Sure enough, I cut a little of the cross spare and kite flew perfect.  I promptly gave the kite to little girl next to us on the beach.  You would of thought she had just won the lottery.
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