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Step 3Pick Gears That Will be Used for the Motor and Pinwheel
The second most important pieces that need to be salvaged are any gears that you come across. I prefer to use spur gears, but if you are inclined to use others, then feel free.
After you have all of the gears, you need to select one for the motor and another for the pinwheel. The pinwheel gear should be relatively large in comparison to the motor gear, but not too large.
You need to determine a ratio in the gears diameters that allows the pinwheel to spin freely, but also will spin the motor rapidly enough to light the LED. You may have to use trial and error once you get the entire contraption put together.
After you have all of the gears, you need to select one for the motor and another for the pinwheel. The pinwheel gear should be relatively large in comparison to the motor gear, but not too large.
You need to determine a ratio in the gears diameters that allows the pinwheel to spin freely, but also will spin the motor rapidly enough to light the LED. You may have to use trial and error once you get the entire contraption put together.
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