Programless Drivetrain - Gearing Challenges

Introduction

This activity pairs with the Programless Drivetrain Build Activity to introduce the challenge of utilizing gears to modify the drivetrain’s speed and torque. Students will have to adjust their gearing to accomplish their goal as the servo’s output cannot be modified!

Students will take advantage of the extrusion frame to slide their hex shafts, wheels, servo, and gears into different places to adjust their gearing. Additional hex shafts can be added to expand the gear train.

This activity includes two challenge options: a short version (SV) and a longer version (LV)

Covered Concepts

• Servo usage

• Changing modes using the SRS Programmer

• Calculating the gear ratio of a gear train

• Torque vs. speed in a gear train

• [Optional] Compound gearing

• Intro to Robotics V2 - Unit 2

  • This activity can replace or be completed in additional to the existing Unit 2 Challenge

Students will:

• Explore how changing gearing changes the outputted speed and torque

• Define what is a gear train and gear ratio

• Calculate gear ratios on a gear train

Build Guide (shared with Programless Drivetrain Activity):

Intro Worksheet:

Gearing Challenge Activity (Short Version) Worksheet:

Gearing Challenge Activity (Long Version) Worksheet:

[Optional] Compound Gearing Worksheet: