# Gear Ratio & Mechanical Drive Calculator

> Use when calculating gear ratios, converting RPM between shafts, computing torque output, analyzing drivetrain configurations, or selecting motors for mechanical systems.

- Skill: `bytesagain/gear-ratio-mechanical-drive-calculator` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add bytesagain/gear-ratio-mechanical-drive-calculator`
- Raw SKILL.md: https://api.skillmd.com/api/skills/bytesagain/gear-ratio-mechanical-drive-calculator/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: bytesagain (https://skillmd.com/u/bytesagain)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/bytesagain/gear-ratio-mechanical-drive-calculator

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# Gear Ratio & Mechanical Drive Calculator

Calculate gear ratios, convert RPM, compute torque, analyze multi-stage drivetrains, and get motor selection guidance for mechanical systems.

## Commands

### ratio
Calculate gear ratio from tooth counts or diameters.
```bash
bash scripts/script.sh ratio 20 60
```

### speed
Convert RPM through a gear ratio.
```bash
bash scripts/script.sh speed 1800 3.5
```

### torque
Compute output torque given input torque and gear ratio.
```bash
bash scripts/script.sh torque 10 3.5 0.95
```

### drivetrain
Analyze a multi-stage gear train.
```bash
bash scripts/script.sh drivetrain "20:60,15:45,18:72"
```

### motor-select
Motor selection helper based on load requirements.
```bash
bash scripts/script.sh motor-select 50 300
```

### help
Show all commands.
```bash
bash scripts/script.sh help
```

## Output
- Gear ratios with speed/torque multipliers
- Multi-stage drivetrain analysis
- Motor specification recommendations

## Feedback
https://bytesagain.com/feedback/
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