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 scripts/script.sh ratio 20 60

speed

Convert RPM through a gear ratio.

bash scripts/script.sh speed 1800 3.5

torque

Compute output torque given input torque and gear ratio.

bash scripts/script.sh torque 10 3.5 0.95

drivetrain

Analyze a multi-stage gear train.

bash scripts/script.sh drivetrain "20:60,15:45,18:72"

motor-select

Motor selection helper based on load requirements.

bash scripts/script.sh motor-select 50 300

help

Show all commands.

bash scripts/script.sh help

Output

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

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