Lesson 2

Front

What happens to the output torque when you increase the gear ratio (e.g., 3:1 instead of 1:1)?

Back

Torque increases

Front

Which motor characteristic determines how fast it can spin at no load?(Hint: No Torque, so all ____ )

Back

Free speed

Front

Why do FRC robots often use gearboxes between motors and mechanisms?

Back

To balance torque and speed.

Front

A robot’s drivetrain needs to push heavy objects. What kind of gearing should it use?

Back

Low-speed, high-torque gearing

Front

If a small gear drives a much larger gear, what happens?

Back

Output torque increases

Front

What happens when multiple motors are mechanically linked to power one mechanism?

Back

Torque adds up

Front

What’s a common risk of using too high a gear ratio (too much reduction)?

Back

System moves too slowly

Front

Why do FRC teams care about motor current draw?

Back

It affects battery life and brownouts

Front

Which statement best describes mechanical efficiency?

Back

Ratio of useful output to total input energy

Front

A team notices their arm motor overheats during matches. What’s the most likely mechanical cause?

Back

Wrong gear ratio