Development Log

Recent Updates

Added a Reverse button to reverse the animation

Added a reverse button to reverse the animation plays clockwise or counterclockwise.

2026-04-09

Added a Reverse Engineering section

Added a Reverse Engineering section to help users reverse engineer gears. Reverse Engineering gear geometry is available here.

2026-04-03

Added a How to Use section

Added a How to Use section to help users understand how to use the app. How to Use is available here.

2026-03-28

Base Pitch Table Lookup and Module to Diametral Pitch Converter

Added a base pitch table lookup tool to help narrow down the number of teeth to span (k) by pressure angle to then verify the base pitch. Also added a module to diametral pitch converter tool to help convert between module and diametral pitch.

2026-03-18

Aligning gears in a geartrain

Starting capacilities are external spur gears, and aligning the gears in a geartrain in a custom x,y grid system.

2026-03-17

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Added Features

  • • Common and preferred modules.
  • • Expanding gear report with data.
  • • Gear ratio calculations for basic geartrains.
  • • Geartrains in cascading tabs.
  • • Play pause and reset buttons for the animation.
  • • Reverse button to reverse the animation.
  • • Custom x,y grid system for positioning gears.
  • • Backlash input for gears, referenced from AGMA, DIN and ISO.
  • • Part number and description input for gears.
  • • Profile shifts for adjusting the gears sizing.
  • • Profile shift limits for avoiding undercutting and pointed tops.
  • • Preferred number of teeth for span measurement.
  • • Minimum and maximum number of teeth for span measurement.
  • • Being able to select different driving gears for geartrains.
  • • Inspection measurements for gears span.
  • • Save your gears and gearsets with an account.
  • • Share your gears and gearsets with others.
  • • Embed your gears and gearsets in your website.
  • • Engineering References section.
  • • Base pitch table lookup tool to help narrow down the number of teeth to span (k) by pressure angle to then verify the base pitch.
  • • Module to diametral pitch converter tool to help convert between module and diametral pitch.

Upcoming Improvements

  • • Add in hob geometry factors for tip radius and clearance for profile shift limits.
  • • Force and stress calculations added to gear report.
  • • Gear report data can be exported to CSV or Excel.
  • • Add in different basic rack geometries for hobbing manufacturing method.
  • • Single tooth gear profile export
  • • Export to additional CAD formats
  • • User preferences and settings
  • • Advanced gear report with more data.
  • • Speed, ratio and torque calculations for gearsets.

Known Issues

  • • On some occasions the initial gear mesh is off slightly from the actual mesh, but is corrected when playing the animation.
  • • The gear report is not yet available for mobile devices.