# F1 car design

1. Jan 31, 2009

### Beaujolais

Hi this is my first post here, I am just looking for some advice on designing a F1 model car. Like what the best possible shape for a Formula 1 car could be (Less drag and other factors which may effect its speed). The model car will be propelled forward by a Co2 Canister and will be and a straight track . It is only around 230mm in length and 50mm in width . To be designed on solidworks.

Thanks.

Last edited: Jan 31, 2009
2. Jan 31, 2009

### Cyrus

I think this would be the best shape:

3. Jan 31, 2009

### turbo

wrong. The car is going to be propelled by a CO2 cartridge. Why would it need air intakes, and other stuff associated with ICE technology? That sucker has got to be light, lean, and sleek.

4. Feb 1, 2009

### Beaujolais

Yea your right turbo those air intakes would slow it down soooo much . What about that same car but with the air intakes edited off or something? or would that effect the rest of the car's aerodynamics?

5. Feb 1, 2009

### brewnog

F1 aerodynamics aren't designed to minimise drag for high speed, they're designed for optimum downforce for cornering, which greatly increases drag.

6. Feb 1, 2009

### Beaujolais

What is the best possibly design for a F1 car with a front and rear spoiler powered by a Co2 canister on a straight track then?

7. Feb 2, 2009

### brewnog

My design (given "CO2 canister power" and "straight track" as my only design constraints) would be a buggy made of balsa wood and wire, with enough wheels to hold onto the track to keep it straight. Aerodynamics wouldn't even feature except for some simple nozzle to direct the flow backwards.

8. Feb 6, 2009

### Mech_Engineer

Ironically, an optimized model of an F1 car wouldn't necessarily have the same shape as a full-size F1 car either. The aerodynamic effects at work do not scale linearly with size, and neither does the speed the car will be traveling at. As was mentioned, an F1 car is also optimized for lots of downforce, to aid in cornering.

For a drag car going straight on track and propelled by a "jet" in the back, I suspect your optimum solution would be light; as light as you can possibly make it. As for shape, probably something close to a jet dragster would be best. Depending on the length of the race, and the speed achieved, it's possible the aerodynamics would even take a back-seat when compared to the overall weight of the vehicle.

9. Mar 9, 2009

### tormund

the intakes would enable the air to go through instead of around the car, enabling there to be less drag, hence making it faster

10. Mar 9, 2009

### minger

The air will still have to go around whatever CO2 cartridge is pushing the car. In that case, its better if the air goes around the car rather than "through" the body, then split at the rear going around the cartridge.

11. Mar 9, 2009

### turbo

Mech Engineers suggestion is just what the doctor ordered. Light, lean, and sleek. Wings, spoilers, air intakes, etc would all result in extra turbulence and drag.

12. Mar 27, 2009

### Kbonga

You dont need all the down force of an F1 car. you are going in a striaght line. you need less weight as earlier stated.

13. Mar 27, 2009

### mgb_phys

Cd for an F1 car is sometimes >1 depending on the circuit, twice as bad as a Hummer!

14. Mar 27, 2009

### Danger

I just want to check as to whether the CO2 is being used as a rocket or running through some sort of turbine and gearbox to the axle.
If the former, then I would still recommend creating as much downforce as possible. Those suckers have one hell of a lot of energy. I remember once wedging one between the slats of a corn crib and shooting the cap off with a .22 rifle. The instant result was a cloud of ice crystals, and then I spotted the cartridge about 200 ft. in the air, climbing at over 60° and moving like greased bacon through a goose's a. It went at least a mile... probably more. Keeping something like that on the ground won't be easy.

Last edited: Mar 27, 2009
15. Mar 27, 2009

### Mech_Engineer

You're correct tha model CO2 dragsters are hard to keep on the ground, but maximum downforce isn't really the solution. You need to pay close attention to the height of the CG of your car relative to the CO2 cartridge's nozzle. Also, longer cars are more stable at high speed.

Depending on what kind of track this thing is going on, you'll have to balance a trade-off between weight, length, and aerodynamic stability (you don't want to generate lift, esepecially in the front end). Most CO2 dragster tracks I've seen also have the car on a wire or string to keep it on the track, because it's basically impossible to keep them going straight otherwise...

16. Mar 27, 2009

### Danger

Wow... it never occurred to me that someone has done this before. I thought that it was just an off-the-wall experiment.

17. Mar 27, 2009

### Mech_Engineer

I made a CO2 dragster in the Boy Scouts, but obviously didn't do much in the way of design optimization. They were pretty fun to watch because they usually crashed fantastically at the end of the track

See for yourself: http://en.wikipedia.org/wiki/CO2_dragster

18. Mar 27, 2009

### Kbonga

I dont know much about these cars, but you may just need some kind of counter weight of the CO2 cartrage. I understand weight is a big factor so this might not be good advice.

19. Mar 30, 2009

### tormund

so ur saying it wuold be more efficient to built a cucumber with wheels?????

20. Mar 30, 2009

### Kbonga

I agree least skin friction as possible....also distribute more weight to the front for more downward force and counter weight