® "Convertible Wind
Surfing Board"
P20040394A
As unit or conversion kit
Standard bicycle, on new generation Wide Style
Wind Surfing Board
Unskilled can use side floaters on old type narrow board
Wind
surfing + Cycling
= Water Cycling
Two sporting & recreational requisites – three purposes:
1.
Conventional wind surfing
2.
Conventional bicycle riding
3.
Water biking
  
Great attraction, wherever was exposed
  
Very fast riding on wide style light boards
 
Original board Prepared board for conversion kit
Conversion kit on the board Wind surfing board, ready for water cycling
Conversion kit
Lower
transmission Upper transmission
Front bicycle carrier Steering pilot
    
    
    
      
Easy
preparation for conversion
References:
1. "INPEX"
USA Silver medal
2.
"BIS" UK Silver medal
3. "INOVA"
Croatia Silver medal
4. "NAUTICA"
Croatia Silver medal
"CONVERTIBLE WIND SURFING
BOARD"
AS UNIT OR CONVERSION KIT
-
ORIGINAL PURPOSE, WIND SURFING
-
ADDITIONAL, SECOND PURPOSE,
RIDING BICYCLE ON WATER WITH ASSISTANCE OF TOOTH PROFILE BELT
TRANSMISSION, POWERED BY PROPELLER
·
Two sporting &
recreational requisites – three purposes.
1.
Conventional bicycle riding.
2.
Conventional wind surfing.
3.
Water
biking.
Wind surfing board is foreseen for
surfing during the windy weather, while during the sunny and quiet
windless day is completely useless.
For
using the same board, during the quiet windless weather in sport and
recreational purpose, conversion kit can be assembled and any bicycle
can be used for water cycling by removing road wheels only. That means
the bicycle in this case becomes dual-purpose equipment too.
Preparation for installation of convertible kit on board is very simple.
It could be done by board owner himself, in case when convertible kit is
purchased separately with installing instructions. Procedure in
preparation for installation of convertible kit is: cutting the
appropriate holes in the board, where the plastic cups and guides will
be glued by expanding foam. With such preparation, Wind Surfing Board is
ready for water bicycle riding or wind surfing.
Preparation
for installing bicycle on board is very simple too, quick and does not
take more than fifteen minutes. That also means how the purpose of the
board can be changed several times a day, depending of weather and mood.
In all ready installed cups and guides, the following attachments have
to be inserted: carrier of the bicycle front wheel fork with the
universal joint and steering pulley, carrier of the bicycle rear fork
with seven sprocket-wheel and belt toothed cog-wheel, guides for the
steering rope, steering rope with rope tensioners and adjusters,
steering pilot with the steering pulley. On the bottom side of the
board, the transmission assembly is inserted in to the cups with belt
toothed-cog, toothed belt, propeller and belt adjusting carriers of the
transmission. On such prepared board, the bicycle can be placed with all
its elements except road wheels and tighten with quick releasing wheel
bolt on the front carrier and wheel nuts on the rear carriers.
The
new generation, Wide Style Wind Surfing Boards are very stable, because
of its wideness and flat bottoms. They are not easy
to turn over especially knowing that water cycling take place only on
windless weather. But if for any reason we want to secure the board of
turning over for 180 degrees, the safe floater can be placed in the
middle triangle of the bicycle frame with quick connectors, which will
prevent the board to turn over for more than 90 degrees. From this
position, board can be easily straightened up.
When choosing bike for water cycling (if we all
ready do not posses one) it is recommended to choose high quality ALU
frame bicycle, not only because of possibility to get rusty but because
of its weight and shock absorbers. The ride with such chosen bike will
definitely give very pleasant and comfortable ride.
To ride bikes with such suspension, the
carrier of rear fork is designed to allow the frame movement up and down
as shock absorbers works. The nuts-bushes of the rear hub shaft will
enable that.
Such installation of the bike on the board,
gives much more pleasure in riding than ordinary recreational enjoyment.
That is to say, placing the bike with its chain, front sprocket-wheels
and front and rear gear selectors, we choose the transmission ratio and
propeller RPM to adjust force to our ability or to obtain maximum speed.
The other words, choice of transmission ratio and speed are almost
unlimited. Knowing, that on late bicycle models, ratio between front and
rear chain pulley is 5:1 and on this transmission, ratio between upper
and lower toothed cog is 2:1 and ability of bicycle rider in average
shape to turn pedals 1 1/2 times in second, calculation shows, that in
that moment propeller makes 900 RPM. Considering, that with this RPM we
are turning propeller with diameter of 200 mm and three blades under the
angle of 30 degrees, appears very impressive picture about the speed we
achieve. In any case, for riders with higher demands that is not all.
Transmission can be modified by exchanging sprocket-wheels with higher
ratio ones and increase ratio between upper and lower toothed cogs.
Also, propeller can be modified by increasing its blades angle. With
such modifications water cycling on the wind surfing board can easily
become a sport discipline.
Great advantage
of whole system is its simplicity and lightness. Beside that, the all
turning parts are spinning on the bearings which maximally reduce any
frictions and resistance. The upper bearings are greased, while lower
transmission is fixed in sealed oil housings. The weight of whole system
is around four kilograms. The total weight of whole unit, with new
generation biggest board and alu frame bicycle is around 30 kilograms.
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