Create custom-sized crank arms using a leather cutter or 3D printer.

Generates SVG (2D) or STL (3D) crank arm files from your specified parameters.

The output data can be viewed and shared with other applications.

Automatically calculates the required balance weight size.

Based on the balance weight's outer diameter, crank pin side mass (g), and crank arm density (g/cm³)

Computes the appropriate counterweight dimensions.

Parameters

・ Crankshaft diameter (mm)

・ Crank pin diameter (mm)

・ Crank arm length (mm)

・ Crank arm width (mm)

・ Balance weight radius (mm)

・ Thickness (mm)

View the generated data directly in compatible applications,

or share with 3D printers and connected computers.

The square below shows a credit card for scale reference.

What's New in Version 0.5

Last updated on Oct 9, 2022

0.5
・Set minimum density for balance weight calculations
0.4
・Added parameter restrictions
0.3
・Added D-cut support
・Implemented automatic balance weight size calculation
0.2
・Added balance weight compatibility
・Added circular shape support
0.1
Initial release