Rollout Calculator
Multiply the wheel diameter by , then adjust for pedal rotations, gear ratio, and tire revolutions to determine rollout.
The Rollout Calculator is an essential tool for determining how far a vehicle or bike travels with one complete tire rotation.
Whether you’re optimizing your BMX, RC car, or racing bike, this calculator simplifies the process of calculating rollout by considering key factors such as wheel diameter, gear ratios, and pedal rotations. It is widely used in drag racing, cycling, and other performance applications.
Formula
| Variable | Description | Unit |
|---|---|---|
| Rollout | Inches/RPM | |
| Diameter of the Wheel | Inches | |
| Constant (3.14159) | Unitless | |
| Pedal Rotations (for bikes) | Rotations | |
| Sprocket Teeth Count | Count | |
| Internal Gear Ratio (if applicable) | Unitless |
Solved Calculations
Example 1: Calculate rollout for a BMX bike with a 24-inch wheel, 2 pedal rotations, and a 16-tooth sprocket.
| Step | Calculation | Result |
|---|---|---|
| Multiply |
75.40 | |
| Adjust for pedal rotations | 150.80 | |
| Divide by sprocket teeth count | 9.43 | |
| Final Rollout | 9.43 in |
Example 2: Determine rollout for an RC car with a 2.5-inch wheel and a 3.2 gear ratio.
| Step | Calculation | Result |
|---|---|---|
| Multiply |
7.85 | |
| Adjust for gear ratio | 2.45 | |
| Final Rollout | 2.45 in |
What is Rollout Calculator?
The Rollout Calculator is an essential tool used to compute the distance a tire or wheel travels with one full rotation. Whether for BMX bikes, RC cars, or drag racing, this calculator helps enthusiasts and professionals optimize performance by accurately measuring rollout based on tire size, gear ratios, and other parameters.
By entering details like tire diameter and gear ratio, users can determine the rollout for specific applications. For example, BMX riders can use it to calculate optimal gear combinations, while RC car hobbyists can estimate vehicle speed using the rollout in conjunction with motor RPM.
This tool is equally useful for drag racing setups or junior cycling events, where precise rollout measurements are critical for compliance and performance.
Features include specialized calculators such as the RC car rollout calculator, tire rollout calculator, and bike gear rollout calculator. These provide tailored solutions for different scenarios, ensuring accurate results for enthusiasts and professionals alike.
Final Words:
In summary, the Rollout Calculator is a versatile and reliable tool for calculating tire or wheel rollout, aiding in performance optimization across various applications. Whether for bikes, RC cars, or racing setups, it ensures precision and efficiency.
