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Why don't the forms for belts look like those on the Calculator page?

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Calculator
Metric

Belt Drive

Gear Calculator

Schlumpf and Alfine 11

Wheel Circumference (MM)

Front Gear Teeth

Rear Cog Teeth

Schlumpf and Rohloff

Wheel Circumference (MM)

Front Gear Teeth

Rear Cog Teeth

Schlumpf Speed and Alfine 11

Wheel Circumference (MM)

Front Gear Teeth

Rear Cog Teeth

Schlumpf Speed and Rohloff

Wheel Circumference (MM)

Front Gear Teeth

Rear Cog Teeth

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Last Modified: 03:07:17.24 PM America/Los_Angeles - Wed => 25th Feb 2026