CO2 Race Cars

What is a CO2 Race Car?

• A CO2 race car is a model car POWERED by the release of CO2 gas from a compressed cartridge.

• The release of the gas PROPELS the car forward at a high rate of speed.

What is the Project?• Each Student will DESIGN, BUILD and RACE their own CO2

race car.

• Races will be conducted in June, out in the Garden Level hallway.

• Race times (How much time it takes your car to travel 60 ft.) will be kept.

• Who will have the fastest car in 8th Grade?

Before we begin . . .

What will help to make your car go faster ?

Aerodynamics

• The dynamics of atmospheric interactions with moving objects.

4 Forces of

Aerodynamics:

1. Drag

2. Draft

3. Downward Force

4. Lift

Downward force

Lift

Draft

Lift

Downward Force

Drag Draft

• 1933 Cheverlot 2014 Cheverlot

Wind Tunnel Testing

We will test the Aerodynamic Properties of your car and then form a HYPOTHOSIS about the

performance of your car while racing.

RACE DAY2nd Week of

June

Creative Design

Creative Design 2

Thumbnail Sketching

Early Working Drawing

Working Drawing-Scale 1:1

Coping Saw Cutting Steps

• Make sure the work piece is fastened securely in the vice. • Begin to cut by dragging the blade backwards on the wood

three times.• Place two hands on the handle and begin to cut, ensuring that

the blade is on the waste side of the line.• Rotate your hands slowly to change the direction of the blade

as the direction of the cut changes.• Slow the cutting speed down as you come to the edge of the

piece and continue slowly until the blade passes out of the wood.

• Reposition the block and continue in the same way. • NB. This saw is always used with 2 hands on the handle. Be

careful when turning the blade. If you turn it too sharply it will snap.

•

The Coping Saw