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Introduction. ObjectiveGator ComparisonTechnical IssuesDesign DetailsConclusionRecommendations. Objective. Convert an existing John Deere Gator into an amphibious vehicleMaintain full land functionality, while adding the versatility of deep water use. Final Design. Gator Comparison. . . .
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1. John Deere ALLI-GATOR DCPD Project
April 26, 2004
Adam Krolikowski
Adam Yantis
Dan Delman
Jacqueline Woo
2. Introduction Objective
Gator Comparison
Technical Issues
Design Details
Conclusion
Recommendations
3. Objective Convert an existing John Deere Gator into an amphibious vehicle
Maintain full land functionality, while adding the versatility of deep water use
4. Final Design
5. Gator Comparison Chose 4x2 b/c cheaper, less starting weight, and less dragChose 4x2 b/c cheaper, less starting weight, and less drag
6. Gator Comparison Drag is reduced because the chassis is 10” shorter than the Standard 6x4 Gator
A Mid Axle will be added to help with flotation and propulsion
The 4x2 engine will be replaced with a stronger 18HP engine
The 4x2 steel cargo bed will be replaced with plastic cargo bed Talk about overall starting point for designTalk about overall starting point for design
7. Technical Issues
8. Technical Issues Methods
Plastic shell
Epoxy (typical Marine)
Plastic to Plastic
Plastic to Metal
Lip Seal
9. Technical Issues Need lip seal & epoxyNeed lip seal & epoxy
10. Technical Issues
11. Design Details Choosing the Tires
A spreadsheet was completed including the following aspects
Tire Brand
Width
Height
Rim
Volume
Weight
Weight to volume ratio
12. Design Details
13. Design Details Flotation Analysis
14. Design Details Flotation Analysis
15. Design Details Flotation Analysis – Waterline
16. Design Details
17. Finite Element Analysis
18. Front Impact FEA
19. Front Impact
20. Combination Load FEA
21. Design Compromises No Doors – More difficult to access vehicle
Lower Cargo Load
Lighter Frame – can’t take extreme loading like the open box steel frame
22. Conclusion 4x2 is initially lower cost, lower drag, lower weight
Added Axle and 2 extra driven wheels
Lighter Cargo Bed (approx. 30 lbs lighter)
Lighter Frame (
Water Resistant
Larger Tires
Chassis floats 9 inches fully loaded
Tires submerged 70%
Estimated 1.86 mph in water
Pass FEAs with safety factor of 2 or greater
23. Recommendations Determine a way to seal front axle so vehicle can be all wheel drive
Focus on internal features (placement of subsystems)