Vortech Supercharger RPM Calculator for Sale

Supercharger RPM Formula:

\[ \text{Supercharger RPM} = \text{Engine RPM} \times \left(\frac{\text{Crank}}{\text{Super}}\right) \times \text{Ratio} \]

Engine RPM:

rpm

Crank Pulley Diameter:

inches

Supercharger Pulley Diameter:

inches

Step-Up Ratio:

decimal

Supercharger RPM:

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1. What is Supercharger RPM?

Supercharger RPM refers to the rotational speed of the supercharger's impeller. It's determined by the engine RPM, pulley sizes, and the supercharger's internal step-up ratio. Proper RPM calculation ensures optimal performance and prevents overspeeding the supercharger.

2. How Does the Calculator Work?

The calculator uses the following equation:

\[ \text{Supercharger RPM} = \text{Engine RPM} \times \left(\frac{\text{Crank Pulley Size}}{\text{Supercharger Pulley Size}}\right) \times \text{Step-Up Ratio} \]

Where:

Engine RPM — The rotational speed of your engine
Crank Pulley Size — Diameter of the crankshaft pulley (inches)
Supercharger Pulley Size — Diameter of the supercharger pulley (inches)
Step-Up Ratio — The internal gear ratio of the supercharger (typically 3.45-4.10 for Vortech)

Explanation: The equation calculates how fast the supercharger is spinning based on the pulley ratio multiplied by the engine speed and internal gear ratio.

3. Importance of Supercharger RPM Calculation

Details: Calculating supercharger RPM is crucial for:

Ensuring the supercharger operates within its safe RPM range
Preventing premature wear or failure from overspeeding
Optimizing boost levels for your engine setup
Selecting the correct pulley combination

4. Using the Calculator

Tips:

Measure pulley diameters accurately (outside diameter of the belt contact surface)
Use the step-up ratio specified for your particular Vortech model
Typical Vortech step-up ratios range from 3.45 to 4.10
Maximum safe RPM varies by model (typically 50,000-60,000 RPM)

5. Frequently Asked Questions (FAQ)

Q1: What's the maximum safe RPM for Vortech superchargers?
A: Most Vortech models have a maximum safe RPM of 50,000-60,000 RPM. Check your specific model's specifications.

Q2: How do I measure pulley diameters accurately?
A: Measure the outside diameter where the belt contacts the pulley, not the overall outside diameter.

Q3: What happens if I exceed the maximum RPM?
A: Overspeeding can cause bearing failure, impeller damage, or catastrophic supercharger failure.

Q4: Can I use this for other supercharger brands?
A: The formula works for any gear-driven supercharger, but step-up ratios vary by brand and model.

Q5: How does RPM relate to boost pressure?
A: Higher RPM generally means more boost, but actual boost depends on many factors including engine displacement and efficiency.