propulsion Motor Boats
Combine the joy and excitement of
mechanical toys with your science project by constructing an air
propelled motor boat. This is also a good way of learning about
simple electric circuits. Your boat will have a battery, a switch and a
motor with propeller. This can be used as a science project related
to electricity, force or floatation. This idea is good for a display
project, an engineering project and an experimental (investigatory)
The main structure is
made of Styrofoam board that is available at hardware stores and home
|Material used in this
project are: Simple Switch, Electric Motor, Battery Holder,
Propeller, Screws and Wire.
All the materials are from the
"Car Boat Kit". This kit also include wheels and axles in case
you need to convert your boar to a hybrid vehicle that can drive
both in dry land and in water.
Design Your Boat:
Styrofoam is a very light material and
easily floats on the water. The design of your boat can be as easy as a
rectangle piece of Styrofoam or as complex as you wish. Styrofoam pieces can
be glued to each other using wood glue or white glue. Sketch your ideal
design on a paper before you start. It will be easier to connect the wheels
if your boar is about 5 inches wide or narrower. To connect the wheels
you must designate the parts to hold the axle. Axle holders can be two 1/2"
wide strips of Styrofoam glued at the bottom of the boat.
Start by cutting the foam. You can
cut the Styrofoam easily with utility knives. Just practice for a few
minutes and you will get the grip on it. Hold the knife in a sharp
angle and don't push too much. You may need to go over the same line a
few times until you get a clean cut.
Styrofoam boards can be glued using white
glue or wood glue. They can also be painted using any latex paint or
water based paint.
|Feel free on making your
own design. Just reserve a place where you can place the electric
motor and secure it with tape.
Battery is a heavy piece; it must be
centered in order for your boat to have a balance on water.
Adjustments may be made by placing other heavy objects onboard.
|Please note that with this
method you are not restricted to a boat. You may also make a car that
drives by pushing the air backward. You just need four wheels and four
nails. Make sure that the wheels are large enough and can spin freely.
To hide the battery and switch, you
may also use some cardboard to make a cabin and place it over those
|The boat that you see in
the picture does not have a steering mechanism. You may try different
possible methods to construct a steeling mechanism in your boat.
Finally you can make a vehicle
that can drive both on land and in water. To do that simply attach the
wheels to the sides of the boat.
If you did not get sheaves in your
kit, use the wheels of any plastic toy car instead.
|To connect the wheels
first make holes that must hold the axle. Then insert a piece of plastic
straw in each hole. Finally pass the axle rods through the holes and
connect the wheels.
straws are used to reduce the friction between the axles and the
Material that comes with
the kit may be used in many other projects as well.
|Two pictures of a simple
air propelled electric car. With some creativity and artwork you can
make this a must better project.
|The Kit Contains the
electric motor, simple switch, battery holder, wire, light bulb, screw
base for light bulb, wire, screws and propeller.
You will need additional material and
tools such as Styrofoam board, wood, nail, water color, screw driver,
battery and utility knife.
The electric circuit you make in this project is a simple electric
circuit containing a power source (battery), a switch and a resistor
Car Boat Kit
|This kit does not include
pieces of wood or Styrofoam that you may use to make the boat. Both of
these items are generally available in craft stores. Styrofoam is also
available in Home Depot and some other hardware stores.