Activity 1.1.1a Simple MachinesDevice Construction

© 2012 Project Lead The Way, Inc.Principles of Engineering

Presentation includes: instructions for building a simple machines device and measuring mechanical advantage

Base Equipment

Part Name Quantity

Nut 8-32 Keps

2

Screw 8-32 x 0.375"

2

Base Plate 13x28

2

Step 1: Assemble the Base

Resistance Equipment

Part Name Quantity

3” Drive Shaft 2

2” Drive Shaft 1

4” Wheel 2

Shaft Collar 8

Bearing Flat, Delrin 2

Large Spacer 4

Square Plate 5x5 2

Plus Gusset 3

Step 2: Assemble the resistance force

Lever Equipment

Part Name Quantity

Nut 8-32 Keps

2

Screw 8-32 x 0.375"

2

Bearing Flat, Delrin

2

Square Bearing Plate

1

Bearing Pop Rivet

2

Shaft Collar

3

Bar 1x25

1

3” Drive Shaft

1

Step 3: Assemble the Lever

Calculating mechanical advantage with the lever

Measure resistance

Measure distances

Measure effort

Wheel and Axle Equipment

Part Name Quantity

Bearing Pop Rivet

4

Shaft Collar

4

12” Drive Shaft

1

Bearing Flat, Delrin

2

Large Spacer

3

Track

48

Large Chain Sprocket

1

Medium Chain Sprocket

1

Add supports and string

Step 4: Assemble the wheel and axle

Calculating mechanical advantage of the wheel and axle

Loop string over wheel and axle in opposite directions

Pulley EquipmentPart Name Quantity

Nut 8-32 Keps

2

Screw 8-32 x 0.75"

2

Bearing Flat, Delrin

4

Shaft Collar

6

Bearing Pop Rivet

4

Spacer

1

1” Standoff

1

[G12] 12 Tooth Gear

2

[G36] 60 Tooth Gear

1

[G60] 60 Tooth Gear

1

[G84] 84 Tooth Gear

1

Step 5: Assemble the pulley system

Calculating mechanical advantage of the pulley

Fixed Block and tackleMoveable

Inclined Plane Equipment

Part Name Quantity

Nut 8-32 Keps

2

Screw 8-32 x 0. 75"

2

Chassis Rail 1x25

1

Inverse Slotted Angle 1x28

1

2” Drive Shaft

1

Shaft Collar

3

Spacer

2

Plus Gusset

1

Step 6: Assemble the inclined plane

Screw Equipment

Nut 8-32 Keps

11

Screw 8-32 x 0. 75"

11

Chassis Rail 1x25

4

19 Tooth Rack Gear

3

4” Drive Shaft

1

Shaft Collar

3

Large Spacer

2

Spacer

1

Bearing Block

2

Rack Gear Box Bracket

1

Angle Gusset

1

Slide Bar

1

Worm Gear

1

1” Standoff

2

Track

48

Large Chain Sprocket

1

Step 7: Assemble the screw