https://github.com/adamkdean/drivetrain-calculator

Live drivetrain calculator
https://github.com/adamkdean/drivetrain-calculator

drivetrain gearbox robotics

Last synced: 15 days ago
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Live drivetrain calculator

• Host: GitHub
• URL: https://github.com/adamkdean/drivetrain-calculator
• Owner: adamkdean
• Created: 2026-05-05T08:58:37.000Z (about 1 month ago)
• Default Branch: master
• Last Pushed: 2026-05-05T09:10:22.000Z (about 1 month ago)
• Last Synced: 2026-05-05T11:09:49.126Z (about 1 month ago)
• Topics: drivetrain, gearbox, robotics
• Language: HTML
• Homepage: https://adamkdean.github.io/drivetrain-calculator/
• Size: 10.7 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Drivetrain Calculator

Drivetrain calculator for robotics. Computes gearbox reduction and wheel/tread linear speed from a configurable multi-stage gear train.

![Drivetrain Calculator](https://github.com/user-attachments/assets/ab2ebfdb-9b09-4ba4-ae06-a3aecd1b4f4c)

View the [demo](https://adamkdean.github.io/drivetrain-calculator/).

## Gearbox

Configurable gear train of simple and compound stages with a motor input RPM.

- Stage ratio: `r_i = N_driven / N_driver`

- Total reduction: `R = ∏ r_i`

- Output speed: `ω_out = ω_motor / R`

Reports total reduction, mechanical advantage (`R`), output RPM, and stage count.

## Wheel / Tread

Solves `v = π · D · ω` for whichever variable is unlocked. Two of the three (`D`, `ω`, `v`) are locked as inputs; the third is computed.

- `D` (wheel diameter): mm, cm, m, in

- `ω` (wheel rotational speed): RPM

- `v` (linear speed): mm/s, cm/s, m/s, km/h, mph

Wheel ω can be linked to the gearbox output, in which case it tracks the gearbox computation rather than accepting direct input.

Derived outputs: circumference, time per revolution, RPS, and `v` in multiple units.