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Activity 1.1.1a Simple MachinesDevice Construction
© 2012 Project Lead The Way, Inc.Principles of Engineering
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Presentation includes: instructions for building a simple machines device and measuring mechanical advantage
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Base Equipment
Part Name Quantity
Nut 8-32 Keps
2
Screw 8-32 x 0.375"
2
Base Plate 13x28
2
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Step 1: Assemble the Base
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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
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Step 2: Assemble the resistance force
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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
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Step 3: Assemble the Lever
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Calculating mechanical advantage with the lever
Measure resistance
Measure distances
Measure effort
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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
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Step 4: Assemble the wheel and axle
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Calculating mechanical advantage of the wheel and axle
Loop string over wheel and axle in opposite directions
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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
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Step 5: Assemble the pulley system
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Calculating mechanical advantage of the pulley
Fixed Block and tackleMoveable
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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
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Step 6: Assemble the inclined plane
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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
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Step 7: Assemble the screw