Propeller Blueprinting: The "Hole Shot" Secret
Blueprinting (Lab Finishing) is more than repair—it's performance optimization. Learn how we thin blades and sharpen edges for 2-5 MPH gains.
What is Blueprinting?
Blueprinting (often called "Lab Finishing") is the process of returning a propeller to its true theoretical design—and then optimizing it further. Mass-produced propellers have casting imperfections, uneven blade thicknesses, and inconsistent pitch.
The Process
- Thinning: We reduce blade thickness to reduce drag, while maintaining structural integrity for the material type (NIBRAL vs Stainless).
- Sharpening: Leading edges are sharpened to slice the water with minimal turbulence.
- Cup Adjustment: We modify the cup (trailing edge lip) to "hold" water better, allowing for higher trim angles and better bow lift.
The Results
A blueprinted prop typically yields:
- Speed: 2-5 MPH top speed increase.
- Efficiency: Reduced slip (see our Slip Calculator) means better fuel economy.
- Smoothness: Perfect balance eliminates drivetrain vibration.