1. 1
Final Presentation
MAE 4810
24 April 2014

2. Amberley
Snyder
2

3. 3
Design Question
How can a paraplegic safely
and independently mount
and dismount a horse?

4. 4
Design Requirements
 Lifting capacity 260 lbs
 Attach to a horse trailer
 Powered by DC (battery)
 Comfortable speed/ smooth
operation
 Independent operation/
simple controls
 Padded seat/ wheelchair
 Lap belt/ safety restraints
 Meets ADA requirements
 Low noise
 Max height of horse 17
hands (5’8”)
 Horse restraint
 Mount horse from left side
 Durability/ travel cover
 Conforms to traffic safety
laws

5. Design Goals, Performance Objectives
 Goals:
 Aesthetically pleasing
 Ability to saddle horse
independently
 Assumptions:
 Level ground
 Docile horse
 Wheelchair with brakes
 Person and wheelchair
weigh less than 260 lbs
 Rider has strong upper
body strength
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6. Critical Design Solution
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7. Subsystem: Trailer Supports
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8. Subsystem: Tracks
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9. Subsystem: Platform
9

10. Subsystem: Fold-Up
10

11. Subsystem: Horse Restraints
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12. 12
Design Test & Evaluation
Design Requirement Outcome Design Requirement Outcome
Lifting Capacity of
260 lbs
PASS
(400 lbs)
Lap Belt/ Safety
Restraints
PASS
Attach to Horse
Trailer
PASS
Meets ADA
Requirements
PASS
(SF > 5)
Powered by DC PASS
Maximum Height of
Horse 17 Hands
PASS
(48.5”)
Comfortable Speed
PASS
(.6/ .4 ft/s)
Low Noise Level
FAIL
(72.4/ 87 dB)
Smooth Operation
PASS
(.6/ 1 g)
Horse Restraint PASS
Independent
Operation
PASS
Mount Horse from
Left Side
PASS
Simple Controls PASS
Durability/ Travel
Cover
ONGOING
Padded Seat/
Wheelchair
PASS
Conforms to Traffic
Safety Laws
PASS
(5 15/16”)

13. Performance Factors
Component Safety Factor
Horizontal Arms 5
Support Link Bolts 10
Chain Attachment Bolts 9
Vertical Tracks 6
Horizontal Tracks 5
Hinge Point Bolts > 30
Platform 7
13
 46.5” vertical motion
 15” horizontal motion
 260 lbs (SF > 5.0), tested up to 400 lbs

14. Budget
14
Subsystem Outcome
Tracks/ Structure $5265
Lift System $2394
Restraints $254
Deploy $200
Platform $346
Controls $742
Powder Coating $637
Stabilization System $599
Miscellaneous $277
TOTALS
SPENT $10,715
ALLOCATED $10,000

15. Special Thanks
 Intuitech Inc.
 Richard Eversull
 Amberley Snyder
 John Rasmussen
 Intermountain
Hydraulics
 Shalee Killpack
 Ducworks Inc.
 Vincent S.
 Clay Christensen
 Mike Morgan
 Lowes
 Home Depot
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16. Questions?
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17. APPENDIX:
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18. Failure Mode Effects and Analysis
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