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Description |
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Measure and cut the foamcore to the required sizes. |
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Measure and cut the rod. |
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Attach the popsicle sticks to the body with hot glue
Position carefully |
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Slide the front axle through one of the pen barrels.
Bend the ends of the axle at 90 degrees. Keep the bend about 1/2 inch from the end of the barrel. |
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Glue the front axle assembly to the front popsicle sticks.
Keep the barrel parallel to the front of the body. |
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Cut the rear pen barrel into two pieces about 1-1/2 inches long.
Slide the two pen barrel pieces onto one of the 6 inch axles.
Bend the ends of the axle at 90 degrees just like you did for the front axle.
Glue this rear axle assembly to the rear popsicle sticks leaving about 1-1/2 inch of the axle showing between them.
Make sure the axles are parallel to each other before the glue cools. |
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Glue small pieces of foam core to the compact disks. |
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Poke a small hole, about 1/8 inch diameter, through the middle of the foam on each compact disk. You can use your extension rod for this. |
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Mount the wheel assemblies on the axles and secure with hot glue. Only apply glue to the outside of the assembly.
Before the glue cools, make sure the wheel rotates without a wobble. |
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Attach the extension rod to the mousetrap using the tie wire. |
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Hot glue the mousetrap to the body. |
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Attach the string to the end of the extension rod.
In practice it is helpful if you put a small wire hook (a half of a paper clip works) on the end of the string and a small wire loop (the other half of the paper clip) on the end of the extension rod. |
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Attach the circular thingy to the rear axle
This is just something to make a portion of the rear axle a larger diameter.
This gives the car a lower gear for starting.
You might wind several (many) layers of tape on the axle. |
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The car is now complete and ready for testing. |
