# Truck driven from a small motor that can carry a heavy load, yet can travel fast. [closed]

I am building a truck from trash as materials. I have one small motor and a a few small gears, but no other engineered materials are allowed. The truck must carry a load for a distance of 3m. The winning truck is the truck with the greatest ratio of load carried:time.

What do you think would be the best approach to this project in terms of the gears and the radius of the driven wheels?

I don't know what would be the best approach in terms of torque and angular velocity.

Any other tips or inputs would be greatly appreciated!

Thanks!

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## closed as off-topic by ja72, ACuriousMind, John Rennie, Qmechanic♦Apr 12 '15 at 21:02

This question appears to be off-topic. The users who voted to close gave this specific reason:

• "This question appears to be about engineering, which is the application of scientific knowledge to construct a solution to solve a specific problem. As such, it is off topic for this site, which deals with the science, whether theoretical or experimental, of how the natural world works. For more information, see this meta post." – ja72, ACuriousMind, John Rennie, Qmechanic
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What is your source of energy? A battery, solar panels, gas? Trash reminds me of Back To The Future, but I guess you don't have a Mr. Fusion – Rafael Reiter Feb 13 '13 at 21:39
2 AA batteries. Yes I wish, you will all have to be my Mr. Fusion! – user20931 Feb 13 '13 at 22:15
Is the competition to a set distance, or set time? – ja72 Apr 12 '15 at 6:39
Try Engineering – ja72 Apr 12 '15 at 6:54
FYI - Use the equations in physics.stackexchange.com/a/15620/392 to model the motion of the truck. – ja72 Apr 12 '15 at 6:56