4M Hover Racer Manuale di avvio rapido - Pagina 6

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Inserting the batteries

15. Make sure the switch is off. Insert four AAA batteries into the battery compartment. The negative

terminal of each battery (the flat end) goes against one of the springs in the battery compartment.

16. Slide and add the battery compartment cover.

17. Secure the cover with two screws.

Holding onto the base, and keeping your fingers clear of the propeller, switch on the motor. The propeller

should blow air into the duct. If it blows air towards the motor, swap the wires from the motor over in the

terminal holes and try again.

Congratulations! Your Hover Racer is complete.

E. OPERATION

Warning: Always check the propeller is not broken before each use.

Place your Hover Racer on a wood or tiled floor and aim it away from any obstructions. Turn on the motor.

The skirt should inflate and the Hover Racer should move forward, skimming across the floor. Real hovercraft

can travel across water, but don't try to operate your model Hover Racer over water, as it will become

damaged should it be submerged.

F. TROUBLESHOOTING

If the motor does not run:

• Check that you are using fresh batteries.

• Check that the batteries are inserted correctly in the battery compartment.

• Check that all four wires are connected in the terminal holes.

If the propeller blows air forwards instead of backwards, swap the wires from the motor in the terminal

holes.

If the skirt does not inflate properly:

• Check that your batteries are fresh (run down batteries will not run the propeller fast enough to inflate the

skirt).

• Check that the duct is stuck firmly to the underside of the base.

• Check that the skirt is fixed firmly to the underside of the base, and that the bottom layer of the plastic is

not stuck anywhere, so that the skirt can inflate.

If your Hover Racer does not move forward:

• Check that the arch template is installed correctly.

• Gently stretch the skirt a little bit and check that it inflates to an appropriate shape.

If your Hover Racer tilts and tends to turn to one direction:

• Place a coin onto the base panel next to the battery compartment, on the side opposite that which the racer

tends to turn. The coin helps correct the racer's centre of balance. Adjust the position of the coin to make the

racer run straight. Use adhesive tape to affix it in place.

G. HOW DOES IT WORK?

The batteries provide electricity to the motor, which turns the propeller at high speed. The propeller blades

force air backwards.

The propeller blows air into the lower duct, which inflates the skirt. The air in the skirt acts like a cushion. It

keeps the Hover Racer off the ground, which reduces friction between the Hover Racer and the ground,

enabling the Hover Racer to easily skim along.

The propeller also pushes air backward through the top duct (the arch). According to the laws of physics,

every force has an equal and opposite reaction. Therefore, when the propeller pushes air backward, the air

pushes the propeller forward, which moves the Hover Racer.