Motorized Beach Wheelchair

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

  • Analyzed existing manual beach wheelchair donated by Avalon Beach Patrol

  • Identified key limitations: difficulty navigating sand, user dependence on caregivers

  • Set target budget of $1,500 to ensure accessibility

  • Conducted material research focusing on durability and water resistance

CAD Design Phase

  • Fully modeled wheelchair in Fusion 360

  • 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

  1. Enhanced stability on sandy terrain

  2. Waterproof electrical systems

  3. Improved maneuverability (9.0/10 vs 2.0/10 in testing)

  4. Significant cost savings and additional motorized features compared to commercial options ($1,500 vs $3,000+)