- 1). Build a base for the vehicle. A base made of styrofoam, about 8 inches wide by 12 inches long, or whatever dimensions you would prefer to make. Round off the sides and taper slightly the base toward the front.
- 2). Build a mount for the fan motor out of balsa wood. Place the mount about 2 inches from the rear of the base, and have it stand about 4 inches tall. Leave the glue to dry overnight.
- 3). Make a seat out of balsa panels, as well as a slot to store the receiver and power supply for the boat underneath the seat. This should extend toward the front of the boat, but not exceed about 3 inches from the front of the boat.
- 4). Mount the motor on the frame you built for it. Attach the propeller to the mounted motor.
- 5). Build a rudder that connects to the airboat on the back of the propeller. Build a wooden frame that surrounds the propeller, but does not impeded the motor's movement. Attach a hinged rudder to it, as well as a small wooden "handle" that reaches to the motor mount.
- 6). Install the servo so it attaches to the handle on the rudder, and mounts on the motor frame.
- 7). Wire the servo and the motor to the receiver. Place these in the slot hidden under the seat.
- 8). Connect the battery to the power supply. Attach that to the boat as well.
- 9). Test the servo motor to make sure it moves the rudder as needed. Test that the motor also increases and decreases speed as needed.
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