Kitebuilder.com

[Progcraft]

G'day.

I found this clip in a delta kite plan by Dan Leigh (link at bottom):

A rough guide to hardwood wing spars and spines is to use 1/16" of diameter for each 2 feet of span, and use the next size up for spreaders.
Fiberglass equivalents are approximately:
1/8"(3mm) wood=3mm fiberglass,
3/16"(5mm) wood=4mm fiberglass;
1/4"(6mm) wood=5mm fiberglass;
5/16"(8mm) wood=1/4"(6.35mm) fiberglass but not quite - scale a 5/16"(8mm) wood kite down by 92.5% to make one in 1/4"(6.35mm) fiberglass.

The maximum length of 1/8"(3mm) diameter wood spars should be about
24"(61cm);
3/16"(5mm) about 36"(91.5cm);
1/4"(6mm) about 48"(1.22m).
The maximum lengths are for light wind versions.

Average spar lengths for normal flying would be something like
34"(86cm) for 3/16"(5mm) wood or 4mm fiberglass;
36 to 41"(91 to 104cm) for 1/4"(6mm) wood or 5mm fiberglass, with 39"(99cm) normal for 95 to 98 degree nose angles.
For 5/16"(8mm) Ramin, 52 to 60"(1.32 to 1.52m) works, with 54"(1.37m) normal, 60"(1.52m) for light winds.

Is there anything you experts can add to this? Or disagree with?

Thanks
P.

Delta Plan:
http://planos.cometas.info/planos/dandelta/plan.html

Found through the 'Kite Plan Base' (thanks tbanning )
http://planos.cometas.info/

[stevef]

Ooo, good info here. First time I've seen this. Thanks for posting it Prog....
_________________
Steve Ferrel
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