1. What is Timing Pulley Ratio?

The timing pulley ratio determines the speed relationship between two connected pulleys in a belt drive system. It's calculated by dividing the number of teeth on the driving pulley by the number of teeth on the driven pulley.

2. How Does the Calculator Work?

The calculator uses the simple ratio equation:

Where:

• \( Teeth_1 \) — Number of teeth on the first pulley
• \( Teeth_2 \) — Number of teeth on the second pulley

Explanation: The ratio determines how many times the second pulley will rotate for each rotation of the first pulley.

3. Importance of Pulley Ratio

Details: The pulley ratio is crucial for determining speed reduction/increase and torque multiplication in mechanical systems. It affects the performance and efficiency of belt-driven machinery.

4. Using the Calculator

Tips: Enter the number of teeth for both pulleys. The values must be positive integers (minimum 1 tooth). The ratio is dimensionless.

5. Frequently Asked Questions (FAQ)

Q1: What does a ratio greater than 1 mean?
A: A ratio > 1 means the first pulley is larger than the second, resulting in speed increase and torque reduction at the second pulley.

Q2: What does a ratio less than 1 mean?
A: A ratio < 1 means the first pulley is smaller than the second, resulting in speed reduction and torque increase at the second pulley.

Q3: How does this affect RPM?
A: The RPM of the second pulley = RPM of first pulley × (Teeth1/Teeth2).

Q4: Can I use this for different pulley types?
A: This calculation works for any toothed pulley system (timing belts, chain drives) where tooth count determines the ratio.

Q5: What about belt length?
A: This calculator only determines ratio. Belt length depends on pulley diameters and center distance.