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
Downward Force
Drag
Draft
Lift
• 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 DAY
2nd 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
The Coping Saw