Lodestone Fly Fishing Reel
Overview
Traditional fly reels rely on ball bearings and complex sealed pressure plate drag assemblies. This increases the part count, maintenance requirements, and opportunities for debris/corrosion that affect performance.
Lodestone rethinks the internal architecture with a bearingless spool support system using self-lubricating PTFE bushings and a simplified helical cork drag mechanism. The result is a rugged, serviceable fly reel with significantly fewer components while maintaining smooth operation.
Designed from concept through prototype, the project combines industrial design, mechanical design, CAD development, engineering documentation, additive manufacturing, and functional prototyping.
Final Functional Prototype
The final prototype validates the complete mechanical architecture through functional assembly, rotating spool operation, and fully integrated drag components.
Primary materials include:
Printed carbon fiber reinforced polymer
PTFE bushings
Stainless steel drag disc
Machined stainless steel hardware
Research Insights
A survey of fly anglers identified several recurring priorities that informed the design direction.
Low maintenance was consistently prioritized.
Corrosion resistance was highly valued.
Smooth drag performance remained a key expectation.
Ease of cleaning influenced the simplified internal architecture.
Engineering Innovation
Rather than relying on a conventional pressure plate to compress the drag stack, the final design uses a helical drag adjustment mechanism that directly compresses a traditional stainless steel disc drag.
The threaded mechanism achieves the required drag stack compression within approximately 180° of rotation, compared to the approximately 360° adjustment commonly found in conventional pressure plate assemblies. This architecture eliminates the pressure plate assembly and several associated components, reducing overall part count while simplifying assembly and serviceability.
Competitive Analysis
The exploded assembly compares the final prototype with a conventional sealed disc drag fly reel, illustrating how the redesigned drag architecture simplifies the internal mechanism without changing the fundamental operation of a traditional stainless steel disc drag.
Engineering Documentation
Engineering documentation was developed to communicate manufacturing intent, assembly relationships, and critical component geometry.
Deliverables include:
Assembly drawing
Axle component drawing
Assembly section view
Axle manufacturing dimensions
Generic assembly dimensions
Internal Engineering
Cross-sectional modeling was used throughout development to validate component interaction, drag packaging, assembly clearances, and rotating interfaces before fabrication.
Engineering considerations included:
Functional print tolerances
Assembly clearances
Optimized wall thicknesses
Corrosion-resistant stainless steel hardware
PTFE bearing surfaces
Additive manufacturing constraints
Product Visualization
Final product visualization explores commercial branding, packaging, and intended outdoor use.
Process Work
Concept Development
Early concept exploration investigated alternative spool support methods, drag architectures, serviceability strategies, lightweight structures, and branding before converging on the final design direction.
CAD Development
Architecture evolved through continuous CAD iteration, refining assembly layout, drag packaging, structural geometry, aesthetics, and manufacturability.
Development focused on:
Internal architecture
Helical drag mechanism
PTFE bushing integration
Structural refinement
Assembly simplification
Manufacturing readiness
Aesthetics/aggressive venting
Prototype Development
Successive prototypes validated assembly, fit, drag operation, structural performance, and manufacturability while guiding each design iteration.
Development progressed through:
Early blue proof-of-concept prints
Axle development and testing
Carbon fiber prototypes with magnetic support concepts
Final carbon fiber bearing-less prototype utilizing PTFE bushings
Project Outcomes
Designed and engineered a complete fly reel from concept through functional prototype.
Developed a bearing-less spool support system using PTFE bushings.
Eliminated the traditional pressure plate assembly through a simplified helical drag adjustment mechanism.
Reduced overall component count while improving serviceability.
Produced complete CAD assemblies, engineering drawings, and functional prototypes.
Applied design for aesthetics, additive manufacturing, tolerancing, and assembly throughout development.
