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Lifting with Gears

CSEF · 2002 Applied Mechanics/ Structures & Mechanisms/ Manufacturing

Patrick M. Knisely · Westwood Basics Plus, Irvine

Overview

Objectives/Goals Determine if gears will affect how much weight you can lift with a pulley Methods/Materials Materials: · Pieces from a K#NEX set; · Gears, pulleys and motors from a K#NEX set; · String; · Plastic bucket; · Rocks; · Kitchen scale; · Plastic cup. Methods A. Build a K#NEX frame B. Build a K#NEX cradle C. Install a direct drive Motor D. Put a Pulley on the Drive Shaft E. Put rocks in the cradle F. Record the weight G. Start the Motor H. Add weight in increments until the motor can lift no more I. Record the final weight J. Add a set of gears between the motor and the drive shaft K. Repeat steps E-J Results Each added gear set allowed the motor to lift more weight. · Direct drive - 945 grams · One gear set - 1,295 grams · Two gear sets - 2,690 grams · Three gear sets - 3,590 grams Conclusions/Discussion The more gears you add the greater the weight that can be lifted. Gears act like pulleys and ropes by reducing effort.

Summary statement

My project is about using gears to increase lifting ability.

Help received

My dad helped me by getting the books and helping build the frame.

Competition history

  • CSEF 2002 Applied Mechanics/ Structures & Mechanisms/ Manufacturing · Entry J0223

Resources

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