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Speed Calculation Formula:
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The Gear Ratio RPM Speed Calculator estimates vehicle speed based on engine RPM, tire circumference, and gear ratio. It provides an accurate assessment of how different gear ratios affect vehicle performance and speed.
The calculator uses the formula:
Where:
Explanation: The equation calculates how the gear ratio transforms engine RPM into wheel rotation speed, which combined with tire circumference determines vehicle speed.
Details: Accurate speed calculation is crucial for vehicle performance tuning, gear ratio selection, and understanding how modifications affect top speed and acceleration.
Tips: Enter RPM (revolutions per minute), tire circumference in inches, and gear ratio (unitless). All values must be valid positive numbers.
Q1: Why is tire circumference important in speed calculation?
A: Tire circumference directly affects how much distance the vehicle covers with each wheel revolution, making it a critical factor in speed calculation.
Q2: How do I measure tire circumference?
A: Measure the distance around the outside of the tire, or calculate it using the tire size specifications and standard formulas.
Q3: What does the gear ratio represent?
A: The gear ratio represents how many times the engine rotates for each rotation of the wheels, affecting torque and speed.
Q4: Why is there a constant of 1056 in the formula?
A: The constant 1056 converts the result from inches per minute to miles per hour (minutes to hours and inches to miles).
Q5: Can this calculator be used for different types of vehicles?
A: Yes, the formula works for any wheeled vehicle as long as accurate inputs for RPM, tire circumference, and gear ratio are provided.