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)

Two examples of the Programless Drivetrain - Gearing Challenge build

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

Curriculum Connections

• Intro to Robotics V2 - Unit 2

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

Activity Goals

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

Activity Files

Teacher Files

32MB

Programless Drivetrain - Gearing Challenges Activity Plan.docx

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Student Files

Build Guide (shared with Programless Drivetrain Activity):

6MB

Programless Drivetrain Build Guide.pdf

PDF

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Programless Drivetrain Onshape

Intro Worksheet:

430KB

Programless Drivetrain Gear Ratio Worksheet.docx

Open

Gearing Challenge Activity (Short Version) Worksheet:

352KB

Programless Drivetrain Gearing Challenge [SV].docx

Open

Gearing Challenge Activity (Long Version) Worksheet:

333KB

Programless Drivetrain Gearing Challenge [LV].docx

Open

[Optional] Compound Gearing Worksheet:

572KB

Programless Drivetrain - Compound Gearing .docx

Open