PDF Aerodynamics Study of Co2 Car Design - IJERTCO2 Dragster Car - Technology, Engineering and Design.
Your small dragster is going to be moving at incredible speeds when you race it.It will be subjected to a wide variety of forces that affect it.Here are the main forces involved.
drag is the most difficult to test for.It's not easy to tell how much drag your CO2 car will face.You may want to look into a wind tunnel for that reason.Pitsco's AirTech X-Stream Wind Tunnel is a small wind tunnel that can be used to test models.
If you put your car in the wind tunnel and fog into the air stream, you can see how air flows over the car's body.A smooth flow of air is what you want.If you have too many of those, you may want to use a new one, or use sandpaper to smooth it out.