Mechanical Engineer Needed for Fitness Equipment Design (Rotational Resistance System CAD+ Prototype

Project Overview: I am developing a new commercial-grade rotational resistance fitness machine (COREX concept) designed for athletic performance, core training, and rehabilitation. This is not a simple CAD drawing project—I am looking for a mechanical engineer who can help bring this concept to life from early-stage design through manufacturing-ready outputs. Scope of Work: Develop a 3D CAD model of the product (Fusion 360, SolidWorks, or similar) Engineer the rotational resistance system (smooth, controlled, adjustable resistance) Design for durability, safety, and commercial use Create adjustable components for different user heights Optimize for cost-efficient manufacturing (COGS awareness) Provide: 3D assembly files Exploded views 2D engineering drawings Bill of Materials (BOM) STEP files for manufacturing About the Product Concept: The system is a standing rotational training device that allows users to generate controlled torque through the torso while maintaining lower-body stability. Key features include: Circular or ring-based rotational path Adjustable resistance (magnetic or mechanical preferred) Smooth, consistent motion (no jerky movement) Commercial-grade durability Compact footprint Sleek, modern design (inspired by high-end fitness equipment) Ideal Candidate: Mechanical engineer (not just CAD designer) Experience with: Fitness equipment OR Rotational/mechanical systems OR Resistance mechanisms Strong understanding of real-world manufacturing Ability to recommend materials and improve design Experience designing for prototype → production Project Phases: This project will be completed in phases: Phase 1: Concept CAD + movement validation Phase 2: Refined design + adjustments Phase 3: Manufacturing-ready drawings + BOM Important Notes: NDA required before sharing full concept details I will provide reference images, sketches, and a detailed spec sheet Looking for someone who can collaborate and improve the design—not just execute To Apply: Please include: Examples of similar mechanical or product design work What CAD software you use Any experience with resistance systems or fitness equipment Brief thoughts on how you would approach this project