MakeCrank

This app designs crank arms to your specifications using a leather cutter or 3D printer. Input dimensions, and it generates SVG (2D) or STL (3D) files for use in other applications. Automatic balance weight calculation is included.

The app calculates the necessary balance weight size based on the outer diameter of the weight, mass (g) on the crank pin side, and density (g/cm3) of the crank arm material.

Parameters:

• Crankshaft Diameter (mm)
• Crank Pin Diameter (mm)
• Crank Arm Length (mm)
• Crank Arm Width (mm)
• Balance Weight Radius (mm)
• Thickness (mm)

Generated data is displayed within the app and can be shared with 3D printers and connected PCs. A credit card is shown for scale comparison.

Version 0.5 (Oct 9, 2022)

• Set a minimum density for balance weight calculations.

Previous Versions:

• 0.4: Added parameter limits.
• 0.3: Added support for D-cut designs and automatic balance weight size calculation.
• 0.2: Added support for balance weights and circular designs.
• 0.1: Initial release.