- Due Date
- Grading (50 points
- Boat and Propeller Designs
- Size Restrictions
- Battery Restrictions
- Motor Restrictions
- Material Restrictions
Printer-friendly Project Rules for educational purposes only. You will
Make an electric
motorboat, by the rules, for 5 meter rain gutter drag races.
1 or 2 students
per boat. Write your names on or attach them to the boat.
____________________. The boats can be tested ____________________.
|Grading (50 points possible)
A boat built
according to all of the restrictions earns 35 points. As a boat propels itself
down the 5 meter track at one time, it earns +3 points per meter completed. The
boat must meet all of the rules and propel itself 5 meters at one time to
qualify for competition.
The top 3 boats in
the tournament will earn extra credit.
|Boat and Propeller Designs
The boat design
may be based upon a fan-boat, speedboat, submarine, paddle wheel, or jet-ski.
Air and water propellers may be taken from an available toy or purchased for a
few dollars at a local hobby store (notify the teacher if neither
option is possible). The boat must fit within and operate according to all of
the following size, battery, motor, and material restrictions.
Restrictions (+5 points)
The size of the
rain-gutter limits the boat¡¯s size. The length of the entire boat must be less
than 35 centimeters from tip to tip. The width of the boat must be less than 9
centimeters at all points at the water¡¯s surface-level. The rain-gutter has a
¡°U¡± shaped cross-section and narrows at its base. It will be filled and have a
depth of about 6 centimeters. Design the boat to fit and operate within these
Restrictions (+10 points)
The boat may
not use any high-amperage batteries or battery packs such as ones designed
for remote-control vehicles, recreational vehicles, camping, or automobiles. The
may only use the following unmodified common household batteries: 1)
one 9V battery or 2) up to six D, C, AA, or AAA batteries. Contact the
teacher for any questions; use batteries only according to their
|Motor Restrictions (+10
The boat must
propel itself with only 1 or more electric motors. An electric motor can
be of any type that meets all other restrictions. An electric motor can be taken
from an available toy or purchased for about $3 at a hobby store (notify the
teacher if neither option is possible). These motors are often rated 1.5V to 3V,
but they work fine with the higher voltages allowed by the battery restrictions.
You may purchase
propellers, motors, and batteries, but the boat may not use any manufactured
toy boat body. You may use household, hardware, and hobby store
materials only according to their instructions. Common materials include:
plastic bottles, Styrofoam, balsa wood, wires, switches, battery holders, tape
and glue. Contact the teacher for any questions.
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