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Audio calculators

Turntables

Turntable pulley diameter

Calculate the required driving pulley diameter for a simple belt drive.

Inputs

Example values

Greater than 0 · max 100,000

Greater than 0 · max 1,000

Use the belt contact diameter of the platter or subplatter.

Point or comma for decimals.

Results

Updates as you type

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The calculation

Dpulley = Ddriven × RPMplatter / RPMmotor

Assumptions & limits

No belt slip, stretch or creep. Diameters are effective belt pitch diameters; the machined groove diameter may differ depending on belt geometry.

Background: Oscillations · OpenStax University Physics
Hifi Kit · Audio calculatorsIdeal models. Real builds need measurements.