Craft crank arms to precise specifications using a leather cutter or a 3D printer.

It computes values from your inputs and creates an SVG (2D) or STL (3D) model of the crank arm.

You can view and share the generated design file with other applications.

Automatically calculates the required size for the balance weight.

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

it determines the appropriate size for a balanced weight.

Parameters

・ Crankshaft diameter (mm)

・ Crank pin diameter (mm)

・ Crank arm length (mm)

・ Crank arm width (mm)

・ Balance weight radius (mm)

・ Thickness (mm)

View the resulting data within a compatible application,

and share it directly with 3D printers or connected computers.

The square below is a credit card for scale comparison.

What's New in the Latest Version 0.5

Last updated on Oct 9, 2022

0.5
・Set a minimum density value for balance weight calculations.
0.4
・Added parameter restrictions.
0.3
・Added support for D-cut shapes.
・Introduced automatic balance weight size calculation.
0.2
・Added support for balance weights.
・Added support for circular shapes.
0.1
Initial release.