This is another kite derived from
the Rokkaku, as the Crico. Each side sail is like a Rokkaku
with additional clothe to form a hollow shape. Between the
two spines, there is a flat sail with a hole in the lower
part.
The shape of the side sails are
providing to the Yakamate a natural stability in all winds.
This shape gives also enough drag to avoid flying at too
high line angle (line angles over 70° are usually ending
with flying problems and it's not desired when kaping).
The two keels
are acting as wind vane. It doesn't add much drag, but it
increases the kite efficiency to stay in the wind direction.
Of course
it is flying very well without the keels.
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The two longerons
are fitted in a sleeve on their all length to perfectly
hold the sail. The cross-spars are slightly bowed for additional
stability, even if the kite is able to fly without any bow.
Intended
for light and medium winds, my Yakamate is equipped with
an anti-draft bridle.
As is, it
has a high aerodynamic efficiency. Its good line angle and
big pull combined with a fair stability are giving the Yakamate
a major role as kite for aerial photography.
I flew it
the first time on 26th of march 2007. It's a real pleasure
to fly it when wind is light and when some strong breezes
and whirling winds are expected from times to times because
it doesn't bother.
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