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You need a light but powerful dc motor, a propeller, and a few button batteries (or other kinds like AA or 9v, but those are usually heavier than what you need in button batteries). Rig them together so the button batteries are lined up parallel to each other and attach them and the prop to the motor. Diagram-
..----------.---------- propeller
..............|
..............| shaft
..|-------------------|
..|-------------------| motor
..|-------------------|
..|-------------------|
...........\/ batteries (slashes are motor wires, vertical are batteries)
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∙ 9y ago
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