Project Overview
This project aimed to enhance beach accessibility by developing a cost-effective motorized beach wheelchair. Working with Avalon Beach Patrol in New Jersey, who provided the original manual wheelchair model, I designed and constructed a motorized version that significantly improves user independence while maintaining affordability.
Design Process
Initial Research & Planning
I began by analyzing the existing manual beach wheelchair donated by Avalon Beach Patrol, identifying key limitations:
- Difficulty navigating sand, user-dependence on caregivers
- Identified key limitations
- Set target budget of $1,500 to ensure accessibility
- Conducted material research focusing on durability and water resistance
CAD Design Phase
I fully modeled the wheelchair in Fusion 360, focusing on:
- Designed custom mounts for motors and battery systems
- Optimized component placement for weight distribution
- Created detailed assembly instructions
- Integrated waterproofing considerations throughout design
Build Process
Frame Construction
- Cut and assembled PVC frame based on CAD specifications
- Used marine-grade materials for enhanced durability
- Implemented reinforced joints for structural integrity
Motorization System
- Installed dual waterproof electric motors
- Integrated 12V 50Ah LiFePO4 batteries for extended use
- Added emergency stop functionality
- Implemented joystick control system
Safety Features
- Waterproof electronics enclosure
- User safety belt system
- Water sensor integration
- Redundant emergency stops
Key Improvements Over Traditional Design
Independent user control via joystick:
- Enhanced stability on sandy terrain
- Waterproof electrical systems
- Improved maneuverability (9.0/10 vs 2.0/10 in testing)
- Significant cost savings and additional motorized features compared to commercial options ($1,500 vs $3,000+)
Technical Skills Demonstrated
- CAD modeling and assembly design (Fusion 360)
- Electromechanical system integration
- Material selection for marine environments
- User-centered design and accessibility considerations
- Waterproofing and environmental protection design
- Cost optimization and design for manufacturing
Project Impact
This project demonstrates that accessible design can be both affordable and effective. The motorized beach wheelchair successfully improved user independence while reducing costs by 50% compared to commercial alternatives. Most importantly, it provides beach access to individuals who would otherwise require constant caregiver assistance, significantly enhancing their beach experience and autonomy.
Research Poster
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