2006-2007 pittsburg state university mini-baja

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Mini Baja Advisory Presentation May 2, 2008 Presenter: Mark Bell Accompanied by Baja Team 83 Member Jerrod Bohannon

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Page 1: 2006-2007 Pittsburg State University Mini-Baja

Mini Baja Advisory PresentationMay 2, 2008

Presenter: Mark Bell

Accompanied by Baja Team 83 MemberJerrod Bohannon

Page 2: 2006-2007 Pittsburg State University Mini-Baja

Table of ContentsOverview of Competition

Design ConditionsGrading Criteria

Design ConceptsDesign ChangesDrawingsManufacturing AnalysisScheduleFinancial Plan

Page 3: 2006-2007 Pittsburg State University Mini-Baja

Design Conditions

Overall length must be a maximum of 108”Overall width must be a maximum of 64”Must be capable of carrying one person 6’3” tall and weighing 250 lbs.Must use Briggs & Stratton 10 hp OHV Intek Model 205432

Page 4: 2006-2007 Pittsburg State University Mini-Baja

Grading Criteria

Cost ReportDesign ReportAccelerationBrakingHill ClimbLand ManeuverabilitySpecialty EventsEndurance Race

Page 5: 2006-2007 Pittsburg State University Mini-Baja

Frame Design

Page 6: 2006-2007 Pittsburg State University Mini-Baja

Design Concepts

Target vehicle weight: 450 lbsForward, neutral, reverse transmission

Design shifting mechanism

Page 7: 2006-2007 Pittsburg State University Mini-Baja

Design Changes

Changed frame impact support tubing near firewallModified trailing arm attach pointsAdded tubing to enclose engine within frameRedesigned shock mounts once travel was finalized

Page 8: 2006-2007 Pittsburg State University Mini-Baja

Tubing Bender

Page 9: 2006-2007 Pittsburg State University Mini-Baja

Tubing Coping

Page 10: 2006-2007 Pittsburg State University Mini-Baja

Mig Welding

Page 11: 2006-2007 Pittsburg State University Mini-Baja

Waterjet Programming (Master Cylinder Tabs)

Page 12: 2006-2007 Pittsburg State University Mini-Baja

Trailing Arm Bearing Housing

Page 13: 2006-2007 Pittsburg State University Mini-Baja

Side View of Frame

Page 14: 2006-2007 Pittsburg State University Mini-Baja

Bearing Carrier

Page 15: 2006-2007 Pittsburg State University Mini-Baja

Routing Sheet

OPERATION NO.

DESCRIPTION OF OPERATION

MACHINE TYPE TOOLING SET‐UP TIME (hr)

OPERATION TIME (hr)

MATERIALS

10 Cut off to length Power Hacksaw .09 .005 .065” wall 1” x 1.5” x 49”

20 Finish grind cut end Grinding wheel Tape Measure to ensure proper length

.02 .06

30 Cut off to length Power Hacksaw .09 .005 .065” wall 1” x 1.5” x 29.5”

40 Cut chopped end to have 15 degree angle

Power Hacksaw .05 .005

50 Finish grind cut end Grinding wheel .02 .06

60 Square up tubing T‐square

70 Fixture with tabs TAC Weld Tabs/screws .04 .01

80 Weld Joints TAC Weld .04 .03

90 Clean up weld beads Hand Grinder .01 .14

100 INSPECTION Tape Measure Angle FinderRight Angle Ruler

.08

Routing SheetCustomer’s Name:

Assembly NAME: Bottom Frame RailsQuantity: 2

Assembly NO: MB_As_83_001

Page 16: 2006-2007 Pittsburg State University Mini-Baja

Manufacturing MethodsPrimarily bent tubing with mig welded jointsHeim joint inserts into tubing with mig welded jointsEnd mill used to 

Cut keyways in drive shaftsFinish machine front knuckles

Lathe used to turn downPlastic insertsShaftsMachine bearing carriers

Page 17: 2006-2007 Pittsburg State University Mini-Baja

Manufacturing Methods cont.Hemsaw to cut rods to lengthDrill press to drill holesTaps to thread holesWater jet

all tabsshock mountsdrive platesoutside front knuckle contourmaster cylinder tabsskid plate 

Page 18: 2006-2007 Pittsburg State University Mini-Baja

Manufacturing Methods cont.

Set up our own carbon fiber for body panels with help of Plastics Dept.Will have Plastics Dept. support with fabricating a spill pan and guards

Page 19: 2006-2007 Pittsburg State University Mini-Baja

Manufacturing Plan – Lower Frame

Cut tubes to lengthCope ends to match other tubingBend tubing at specified lengths and radii anglesTack weld all tubes into placeMeasure to assure the dimensions are correctMig weld all joints to finalize assembly

Page 20: 2006-2007 Pittsburg State University Mini-Baja

Manufacturing Problems

Shock MountsHad to redesign for shocks mounting to frameGussets had to be redrawn as well

Front KnucklesMachined inner diameter too big for press fit of spindleRecut knuckles and outsourced for the press fit

Page 21: 2006-2007 Pittsburg State University Mini-Baja

Bearing Carrier

Page 22: 2006-2007 Pittsburg State University Mini-Baja

Front Impact Analysis

Page 23: 2006-2007 Pittsburg State University Mini-Baja

Side Impact Analysis

Page 24: 2006-2007 Pittsburg State University Mini-Baja

Rollover Analysis

Page 25: 2006-2007 Pittsburg State University Mini-Baja

Schedule

Project Planning.xls

14‐Jan 4‐Feb 11‐Feb 18‐Feb 15‐Feb 3‐Mar 5‐May 29‐MayFrameSuspensionFinish weld chassisNondriving components

Polaris Parts ArriveBody PanelsLights / wiringAssembly of drivetrainMake spill panProtective covers

moving car

PaintGraphicsRoll bar paddingDesign ReportCost ReportCompetition

14‐Jan 4‐Feb 11‐Feb 18‐Feb 15‐Feb 3‐Mar 5‐May 29‐May

Page 26: 2006-2007 Pittsburg State University Mini-Baja

Financial Plan

Financial Plan.xls

Mini Baja 07‐08 Financial Plan Fundraising

procurred $              2,500.00 

Registration $                  600.00  potential $              5,650.00 

Transmission $                  120.00 

Steel $                  125.00 

Polaris $              1,200.00  Total Needed $    9,500.00 

Partial Total $              2,045.00  Total Potential Fundraising $ 11,150.00 

Total Needed ~ $              9,500.00 

Fundraised $               5,000.00 

Potential Fundraising $             11,150.00 

Total Costs $               9,500.00 

Page 27: 2006-2007 Pittsburg State University Mini-Baja

Conclusion

Finish fixing front knucklesFinal steer setup to get car drivingWorking toward finishing the vehicle: painting, carbon fiber panels, wiring, protective covers, graphicsGoing to competitionBe competitive!

Page 28: 2006-2007 Pittsburg State University Mini-Baja

Questions?