## Re: Board surface

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• I only approximate the area of my boards by simply multiplying the board length by width (max width I think). Since most kiteboard sides are pretty straight
Message 1 of 3 , Aug 28 12:14 PM
I only approximate the area of my boards by simply multiplying the
board length by width (max width I think). Since most kiteboard sides
are pretty straight this approximation is not that bad until we can
get the TRUE surface area from the board manufacturers.

Using the same approximation, your 2 boards are 4514 cm2 and 5246 cm2.

My favorite boards are actually approximated at 4370 cm2 and 7267 cm2.

I am around 60 kg. based on the board surface formula, if I had your
weigh, my favorite board would be around 4885 cm2 (or 122 x 39 cm);
however, my light wind board would be 8134 cm2 (much bigger than yours
- this may explain why I can go out in much lighter wind)

P.S. When I can go out with a 16.6 m2 kite and a 7267 cm2 board,
another kiter weights 75 kg should be on a 24.9 m2 kite and a 8134 cm2
board (179 x 45.4) ... This may explain why I can go out in much
lighter wind and the others can't ...

Hung.

--- In kitesurf@yahoogroups.com, "swengelska" <tom.waldner@t...> wrote:
> Hung,
>
> Great info for us board builders! It would be great if baord
> manufactures published this data!!
>
> I´ll measure my 122x43 and 122x37 designes in the CAD program, these
> are my light and strong wind boards. (75kg intermediate kitersurfer)
>
> I think I remember that you are a light person, 65kg?
>
> --- In kitesurf@yahoogroups.com, Hung Vu <hungvu2000@r...> wrote:
> > I have been experimenting with many different board surface (short
> > board, wide board, narrow board, long board, etc.) and confirm the
> fact
> > that it's the BOARD SURFACE that is most important for a given
> kite size.
> >
> > Of course different board lengths and widths are more desirable
> for
> > different riding styles but it's board surface that dictates which
> kite
> > size is best for a given wind speed.
> >
> > While kite size is proportional to rider weight, board surface is
> > approximately proportional to the square root of rider weight.
> >
> > Personally, I prefer shorter/wider board for tricks and
> longer/narrower
> > board for high speed curising and high jumping.
> >
> > My favorite board surface is around 4400 cm2 for moderate to
> strong
> > wind and around 7300 cm2 for light wind. (The reason why I need a
> > larger board is because modern kites are still not powerful enough
> in
> > light wind; otherwise, I still prefer to use a 4400 cm2 board
> > a 7300 cm2 board)
> >
> > P.S., Of course, there is a LIMIT to how short, wide, narrow, long
> one
> > can go...
> >
> > Hung.
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