Chamber Project

1
Chamber Project

• Mechanical Engineering Group

2
Team Members and Responsibilities

• Traci Traughber Research Tracks
• Chris Griffin Research Cars
  Calculations
• Emily Lloyd Survey Power point
• David Wyche Finances Calculations
• Jamaine Mason GRA Guide

3
Problem

• Design a race track.
• Use math concepts for design.

4
Background

• Searched online for track designs and cars
  generally used for go-kart tracks
• Visited Barbers Motor Sports track
• Found equations for track design

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Track Design- Adult Track

• 16 cars on track at once
• Maximum of one person per car
• Driver must be over 10 years old.
• Maximum speed of 37 mph
• Length of track- ¼ mile
• Width 8 feet

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Procedure

• dR(1-cosQ/2)
• d is the distance from point A to point B (ft)
• R is the radius of curvature (ft)
• Q is the angle of the curve
• e fv²/15R
• e is superelevation rate (ft/ft)
• f is friction of rubber against asphalt
• Dry 0.5 0.8
• Wet 0.25 0.75
• v is max velocity while entering curve (mph)
• r is radius of curvature (ft)

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Procedure Diagram
d
A
B
R
R
Q
D
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Super Elevation Procedure

• f .5
• v 40 mph
• R 105.6 ft.
• Using e f v² / 15R e .5 ft/ft
• Q 27

Q
Q
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Track Design- Mini-Mercedes Race Track

• 10 cars on track at once
• One person per car
• Maximum speed of 25 mph
• Length of track- 1/4 miles

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Parameters

• The majority of the track will be flat.
• Elevation before bridge will gradually rise to 10
  feet for clearance and will gradually descend
  after bridge.

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Procedure Diagram
10 ft. Above
Ground Level
Ground Level
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Car Design

• Child Car
• Variety of Mini Mercedes cars will be used

• Adult Car
• (L x W x H)
• 8.2 ft x 3.2 ft x 2.4 ft

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Costs

• Estimated asphalt cost 265,000/track
• Estimated car costs 32,000
• Estimated total cost 562,000

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Conclusion

• 2 track designs
• Adult Track
• ¼ mile long
• Curve distance 1/16 mile (330 ft)
• e .5 ft/ft
• Q 27
• Kids Track
• ¼ mile long
• Bridge will be 10 ft above ground

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• Questions?