1
Education
®
Objectives:
Understand and describe the transfer of
motion through a spur gear system and investigate the
relationship between gear size, speed of rotation and force.
Materials You Will Need:
PROCESS:
1. Build the CRANK FAN model by following the step-by-step building instructions.
2. Explore your model. Locate and identify the gears. Watch the gear mechanism in
operation as you turn the crank.
3. Using your notebook, explain how the gear system turns the fan blades. How do
the fan’s gears fit together? Are they in line with each other?
Experiment #1
Using a Spur Gear
System in a Crank Fan
79318
built CRANK FAN model
masking tape
paper or notebook
