Gear Ratio

Let's get the hang of this... Flip your card to C.

• no

• no

• yeah

• no

What day is it today?

• Tuesday

• Wednesday

• Thursday

• Friday

na na na na na na na na na na na na na na na na ______.

• Batman

• Waffles

• Dog bone

• Bike lane

What can gears NOT change?

• Speed

• Color

• Direction

• Torque

What is the gear ratio between a 15T gear and a 30T gear?

• 2/1

• 1/3

• 5/3

• 2/5

Why does the yellow gear travel half the speed of the red gear?

• It has the same number of teeth.

• It has its own motor.

• It has twice as many teeth.

• It has half the number of teeth.

TRUE or FALSE: An idler gear in the middle changes the ratio of the outside gears.

• FALSE
• TRUE

What does an idler gear change?

• The size of the gears

• The friction in the gear train

• The gear ratio

• The spacing and direction of motion

What is gear ratio?

• All in your imagination.

• A comparison between gear teeth that tells you how many times gears will spin.

• The name of the next Marvel super hero.

• A way to sound smart.