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The section is aimed at introducing pupils to basic concepts of gears and pulleys. Areas covered include spur gears, compound gears, chain drive, rack / pinion systems and pulley systems.  Click on the aspect of gears/pulleys outlined below to view the information sheets.

 
SHORT VIDEO - INTRODUCTION TO GEARS
 
PDF FILE - POSTER - GEARS AND GEAR SYSTEMS
 

1. Spur Gears and Simple Gear Trains.

2. More Detail Regarding Gears

3. Gear Trains, Idlers and drawing gears

4. Compound Gears

5. Rack and Pinion Gear Systems

6. Rack and Pinion Example

PDF FILECLICK HERE FOR PRINTABLE RACK AND PINION WORKSHEET
 
7. Basic Method of Calculating and Drawing Spur Gears - Including the True Shape of Spur Gears
 

8. Bevel Gears

9. Gear Ratios (Velocity Ratio) - The Basics

10. Gear Wheels (Sprockets) and Chains

11. Worms and Wormwheels

12. Gears - A Practical Exercise

13. Gear Models - Simple Gear Trains

14. Gear Models - Rack and Pinion

 

MAKING GEARS - GEARS PRACTICAL KIT and EXERCISES (VELOCITY RATIO and RPM)

DOWNLOAD THE DXF FILE - for Laser Cutting the Gears - gears-for-laser2.dxf

PDF FILE - Exercises and Questions for the Gears Practical Kit

PowerPoint Version of Exercises and Questions for the Gears Practical Kit


 
GEARS PRACTICAL MODELLING EXERCISE

DOWNLOAD THE DXF FILE - for Laser Cutting the Gears - gears-for-laser2.dxf

PDF FILE - CLICK HERE FOR PRACTICAL MODELLING EXERCISE / PROJECT

CLICK HERE FOR POWERPOINT VERSION OF PRACTICAL MODELLING EXERCISE / PROJECT
 
 

PULLEY SYSTEMS

 
PDF FILE - POSTER - PULLEY SYSTEMS
 

1. Pulley Systems - General Introduction

2. Pulley Systems - Velocity Ratio and RPM - 1

3. Pulley Systems - Velocity Ratio and RPM - 2

4. Pulley Systems - Velocity Ratio and RPM - 3

5. Pulley Systems - Reversing Direction of Rotation

 

6. Pulleys and Lifting - Important Formulas

7. Pulleys and Lifting -1

8. Pulleys and Lifting - 2

9. Pulleys and Lifting - 3

10. Pulleys and Lifting - 4

11. Pulleys and Lifting - 5

12. Pulleys and Lifting - Exam Question

 

 

 

SAMPLE QUESTIONS

 

1. Working Out Gear Ratio (Velocity Ratio)

2. Working Out Revolutions Per Minute (RPM)

3. Working Out Ratio and RPM of Systems Composed of Three Gears

4. Working out the RPM of Compound Gears

5. Rack and Pinion Question

6. Gear Train (including compound gear)

7. Worm Gear Exam Question

8. Rack and Pinion Examination Question - Steering System

9. Sample Answer - Steering System

10. Rack and Pinion Examination Question - Fork Lift Truck

11. Sample Answer - Fork Lift Truck

12. Pulley /Gear Examination Question

13. Pulley / Circuit / Switches Examination Question

14. Gears Examination Questions - 1

15. Gears Examinations Questions - 2

16. Gears Examination Question - 3

17. Gears Examination Question - 4
18. Rack and Pinion Examination Question
19. Systems Diagram and Rack and Pinion Examination Question
 
 
 
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