Gear box speed calculator Enter the Sep 22, 2024 · It determines how the input speed and torque are converted to output speed and torque. 32 - 1. 23 Mount Erin Rd, Blair Athol NSW 2560, Australia +61 2 9607 2299 How Car Speed Calculator works. Gear Output Horsepower Download a gear ratio chart. Thank you very much for putting together a great setup! A lower gear ratio results in a higher output speed, while a higher gear ratio reduces output speed but increases torque. 61 mph 2nd Gear = 84. This is especially useful for car enthusiasts, mechanics, and racers who want to fine-tune their vehicle’s 5 days ago · This is where a Gear Velocity Calculator comes in. Whether you’re a mechanical enthusiast, a professional engineer, or just curious about how things work, our simulator offers an in-depth look into the operations of planetary gears. The gearbox provides a speed reduction of 4:1. no need to enter anything in '6th' gear for a car with only 5 speeds). Rialto Ave. Our transmission gear ratio calculator uses just this one formula to calculate your output: EndTuning - A simple calculator to work out what road speed you will achieve at a given RPM, or calculate your RPMs from a given road speed. Whether you’re fixing a bike, working on a machine, or just learning, this calculator makes gear speed clear and simple. This Excel-based gear ratio chart can calculate gear ratios based on tooth count. The speed ratio is all about angles. Relationship Between Gear Ratio and RPM. Related Questions Individual Input Speed (RPM) Gear Ratio Gear Ratio Speed (RPM) Calculation Method; Speedy Steve: 1000 RPM: 4. How the Gear Ratio and Speed Calculator Works. When using our transmission calculator, you’ll have to input various values such as engine RPM, transmission gear ratio, differential gear ratio, and tire diameter. Or, change input variables (engine RPM, axle gear ratio and tire height) to determine vehicle speed in each forward gear. M. Vehicle speed in MPH A high gear ratio will result in a slower speed but higher torque. 5:1 is: Output Torque = 1000 x 3. com Calculate the theoretical speed for a car in each of its gear ratios. What is the ideal gear ratio for speed? A lower gear ratio increases speed while reducing torque. ) Engine RPM Transmission gear ratio. To use this calculator, follow these instructions: If you know the gear ratio of your system, input it in the Gear ratio row. What is Transmission Gear Ratio? The transmission gear ratio refers to the ratio of the rotational speeds of different gears in a transmission. Oct 3, 2024 · It also helps in selecting the right gear ratios for a vehicle's intended use, whether for efficiency, acceleration, or top speed. This measurement helps cyclists understand the effective size of the gear when pedaling. If the input gear has fewer teeth than the output gear, the input gear has a larger angle between teeth, resulting in a higher rotational speed on the input than the output. How To Calculate Gear Ratio? Below are the gear ratio equations to calculate the gear ratio so, follow these for manual calculation. Gears come in different shapes and sizes (even if the most common are involute gears – see involute function calculator), and these differences describe the translation or transfer of the rotational movement. The input and output gears interlock, and so they each rotate one tooth at a time, together. This calculator determines the top speed of the vehicle with no margin for mechanical, rolling, or wind resistance. 1. To calculate the gear speed in rpm, use the following steps: Multiply the gear speed in rad/s by 60; Now divide the obtained quantity from step 1 by 2π to obtain the gear speed in revolution per minute (rpm); and; Cool!, Now you can easily convert the gear speed in rad/s to rpm. This calculation is crucial for understanding how the speed of the output gear compares to the speed of the input gear. This gear ratio calculator allows you to calculate the secondary gear speed based on the primary gear speed and the number of teeth in the primary and secondary gears. How do I calculate gear ratio? To calculate gear ratio, divide the number of teeth on the input gear by the number of teeth on the output To determine a vehicles speed from the engine speed by multiplying the circumference of the tire by the engine speed and dividing by the combined gear ratio. e. Download the gear ratio calculator Gear Ratio Calculator for Vehicle with Jackshaft. This calculator uses the power, input speed, output speed, and service factor to calculate the rated torque, gear ratio, output torque, and the number of teeth on the pinion and gear. Ring Speed. The output RPM can be calculated using the gear ratio. Gear Ratios and Torque Relationship. This relationship is fundamental in applications where precise speed control is required, such as conveyor systems or automotive transmissions. 44 km/h - 35. How is this formula used in cars? Gear Output Speed. Common FAQs. S o = output speed (rad/s, rpm) S i = input speed (rad/s, rpm) Example - Gear Output Speed. Default speed Help on: Calculate RPM per gear at 50 Mph or Km/h in 3 setups; Change Speed Help on: Calculate RPM per gear at particular speed in 3 setups; Chain / Belt Geom. When the gear ratio increases, torque increases, allowing machines to move heavier loads but at a slower speed. 9. Just follow these easy steps: Select Transmission Type: Choose from a list of popular transmissions like Magnum XL 2. Popularity: ⭐⭐⭐. It helped me to determine a tire size I could find that allowed me to lose 1 gear going through the lights in the 1\8 mile dragstrip. Strange Engineering Ring and Pinion Gear Ratio Calculator. Understanding and calculating the gear ratio is crucial as it significantly influences your vehicle's acceleration, fuel efficiency, and overall performance. By inputting the gear size and tire diameter, you can calculate the gear inches. Useful to see how changing wheel and tyre sizes will effect the performance of your car. Carrier Speed. Example: A gear reducer with 1000 in/lbs of input torque, an input speed of 2000 RPM, and a reduction ratio of 3. Planet Teeth. Gear ratio is determined solely by the number of teeth on each gear. Oct 19, 2024 · Calculation Example: Gearbox selection and sizing involves determining the appropriate gearbox for a specific application. Where: RPM = Revolutions per minute; Circumference = π × Diameter; Speed (m/s) = Speed in meters per second; Speed (km/h) = Speed in kilometers per hour. 66 - . Our Gear Ratio and Speed Calculator is designed to help you determine the speed of your vehicle based on various inputs like engine RPM, gear ratio, final drive ratio, and tire diameter. Gear ratios play a crucial role in the functioning of various machines and vehicles, impacting factors like speed, torque, and mechanical advantage. Use Our Gear Ratio Ring & pinion gear ratio Tire height (in. How Gear Ratio Affect Speed? Different gear ratios affect the rotational speed of the gears. In automotive engineering, it helps determine the gear ratios in a vehicle's transmission system. Follow these simple Input gearbox ratios and tyre size to calculate potential maximum speed in each gear, with a graph to show road speed against engine speed throughout the rev range and show gear change points. A Gear Ratio Calculator is a specialized tool used to determine the gear ratio of a mechanical system, such as a gearbox, transmission, or drivetrain. Please fill in tyre dimension, transmission gear ratios and wanted final drive (differential gear ratio) to see what speed you can expect. Can tire To calculate or compare different gears and transmissions, go back to the Gear Speed Data Entry Section and type over the information you want to change. This calculator assumes you know the vehicle’s transmission ratio. Use this calculator to determine your gear ratio and vehicle’s speed in any gear and any engine RPM for best performance. Scroll through the list of popular transmissions to find yours. Compute Development. What is a speed ratio? A speed ratio compares how fast one gear rotates relative to another, based on the number of gear teeth. 3. Gear-Speed-RPM Calculator: Enter Vehicle Tire Diameter: Enter Vehicle Transmission Gear: Enter Vehicle Rear Gear Ratio: Enter Vehicle Rear Gear Ratio #2: Welcome to our Planetary Gear Simulator, a unique online tool designed specifically for understanding the intricacies of penalty gear systems. You can calculate gear reduction using the following formulas: (A) Using the Number of Teeth (Most Common) The Gear Ratio Calculator can be an excellent tool for budding robotic engineers and students to experiment with these principles. Speed = (Engine RPM / Gear Ratio) × Tire Circumference ÷ Conversion Factor × 60. Tyre circumference = π × (Wheel size in inches × 25. Check the box if the gear is on the same shaft as the gear above it, leave it unchecked if the gear meshes with the gear above it. 5: Modest Molly Q: How does gear ratio affect speed? A: A higher gear ratio reduces the output speed but increases torque, while a lower gear ratio increases the output speed but reduces torque. To get the most from the Gear Ratio Calculator, follow these simple steps: Gear Ratio Speed Calculator By AssassinRacing. Sun Speed. The principle of conservation of energy applies. 63, or Ford Toploader 2. The Vehicle Speed Calculator determines vehicle speed based on gear ratio, RPM, and tire diameter. How do I choose the right gear reduction ratio? The ideal gear reduction ratio depends on the desired output torque and speed, which should align with the specific requirements of the application. A low gear ratio will result in a higher speed but lower torque. 1101 W. Using the Gear Ratio Calculator is simple. Enter the number of teeth of the primary gear. The calculations use the following formulas: T_L = N * T_m (for torque) ω_m = N * ω_L (for speed) May 6, 2025 · Driving Gear (Input Gear): Connected to the power source (motor/engine). 50, T-5 2. 8) = 526 rpm . If you're unsure about the gear ratio value, the calculator can determine it Category Gear Ratio Range Interpretation; Low Gear Ratio < 1: Slow but powerful, like a turtle with a jetpack! Moderate Gear Ratio: 1 – 3: A balanced blend of speed and torque. By understanding the gear ratio, users can optimize performance in various applications, such as vehicles and machinery. 22 RPM: Gear Ratio Speed = 1000 / 4. Gear Ratio Equations: Let’s have a look at the relative equations that you A Gear Ratio Calculator is a tool used to determine the ratio between two gears in a mechanical system. Torque is inversely related to speed in gear systems. Sun Teeth. This calculator provides the calculation of gear ratio and ring gear speed for planetary gearboxes. Gear Ratio Calculator Explanation. 8 can be calculated as. v c = (c t x v e) / (gr t x gr d) Where: d = distance c t = Circumference of tire gr t = Gear ratio transmission gr d = Gear ratio differential v e = Engine speed v c = Vehicle speed The gear ratio for this system is 2. This will help determine how best to optimize gearing for your application. S o = S i / r (2) where . Also solve for RPM, Tire Size and MPH. If a car has less than 6 speeds, only enter gear ratio numbers for the gear ratios that apply (i. Mar 24, 2025 · The speed of a rotating wheel can be determined using the following formula: Speed (m/s) = RPM × Circumference / 60. 24 km/h - 52. Common values range from 60 to 100 RPM. Ring Teeth. What is the ideal gear ratio for high torque? A higher gear ratio provides more torque at the expense of speed. It determines the relationship between the engine's RPM (Revolutions Per Minute) and the wheel's rotation speed. 5: 222. How to Use the Bike Gear Speed Calculator. The output speed of a transmission with input speed 2000 rpm and transmission ratio 3. How do I calculate the speed ratio? Divide the number of teeth on the output gear by the number of teeth on the input gear. 23 mph Sep 22, 2024 · 8. Example: 50 teeth. This calculator will provide the speed of the vehicle based on transmission gear ratio, engine RPM, tire height, and the ring gear and pinion gear ratio in the rear end axle differential housing. 2. It will plot a graph displaying speed in comparison to engine rpm in each gear. Its application is to increase or decrease the speed or torque of the output shaft. Enter the number of teeth on your front chainring. RPM-6th Gear Help on: Top speed for 49 sprocket combinations; Adjust RPM & Gear Help on: Change RPM and Gear in sprocket combinations matrix; Resulting RPM. For mph, the factor is 63,360 (inches in a mile). 20 Frequently Asked Questions (FAQs) About Speed Ratio Calculator 1. This gear calculator will provide expected (theoretical) speed at certain RPM through all gears. A higher gear ratio means more torque and lower speed, while a lower gear ratio provides higher speed but less torque. Using the Car Speed Calculator is straightforward. This ratio describes how the rotational speed of one gear (the input gear) relates to the rotational speed of another gear (the output gear). What units are used for speed? Oct 19, 2024 · Planetary Gearbox Calculations 19 Oct 2024 Tags: Mechanical Engineering Machine Design Planetary gearboxes Planetary gearboxes calculation. It's important to consider that higher gear ratios reduce output speed but increase Nov 16, 2022 · Our gear ratio RPM calculator is an easy-to-use tool that will help you determine your gear system's input or output rotational speed in RPM. 00. 5 For instance, if the input speed is 1750 RPM and the gear ratio is 2:1, the output speed will be 1750 ÷ 2 = 875 RPM. Gear Ratio Speed Calculator: A gear ratio speed calculator helps determine the relationship between the rotational speeds of two gears connected in a mechanical system. 4 + ((Tyre width in millimetres × Tyre height ratio as a percentage) / 100) × 2) Sep 22, 2024 · Gear Ratio Speed Calculator. What Is a Gear Velocity Calculator and Why You - Describes the speed of rotating machinery such as motors, engines, and fans. To reset this form, click on "Clear Form" button below. To calculate the gear speed from the gear ratio: Enter the number of teeth on the input and output gears. 6. This means that Gear 2 will rotate at half the speed of Gear 1 but with twice the torque. Provide the speed of any of the gears to determine the speed of the other. Speed (km/h) = Speed (m/s) × 3. Using our bike gear speed calculator is very simple. It tells you how fast one gear turns when you know the speed or size of the other. Select the appropriate units and click "Calculate" to get the gear ratio and output speed displayed in a table and chart. Determine Gear Inches. The gear ratio directly affects the rotational speed (RPM) of the input and output gears. Sep 14, 2022 · Using this gear ratio speed calculator is easy. By inputting the known values, the calculator finds the missing parameter. An RPM calculator is a tool used to determine the Revolutions Per Minute (RPM) of a rotating object, such as a motor, engine, or gear system. Using the Gear Ratio Calculator is straightforward. Understanding vehicle speed is crucial for optimizing performance, fuel efficiency, and drivability. How to Use the Calculator: Enter the primary speed in revolutions per minute (RPM). This will be able to demonstrate increases with In-Gear speeds for increase RPM limiters A simple gear ratio calculator to find the speed and mechanical advantage of a gear system of spur gears. How do I use the Gear Ratio Speed Calculator? To use the Gear Ratio Speed Calculator, input the number of teeth on both the input and output gears, as well as the input rotational speed. Gear Ratio: Defines the speed/torque relationship between gears. These resistance factors could make the top speed slower than the calculation. Driven Gear (Output Gear): Receives motion from the driving gear. How to Use the Calculator. Jul 12, 2022 · Kick in high gear with our gear ratio calculator: here, you will learn how gear multiplies speed and torque using only a couple of simple mathematical formulas. Just follow these steps: Enter your cadence (RPM): This is how many times you pedal in one minute. Rialto, CA 92376, USA +1 (310) 361-0020. How to Use the Car Speed Calculator. How to calculate the speed from the tyre size, engine speed and gear ratios The first step in the process is to calculate the tyre's circumference with this formula. - Used to calculate the output speed in gear systems. Calculate the Gear Ratio Needed to run a certain 1/4 mile. Where: Tire Circumference = Diameter × π (Pi) Conversion Factor varies depending on the desired unit. 95 - . Gear image generation code from http://jsbin. Requires an HTML 5-compliant browser. We use Gear Ratio to calculate the speed and torque of the output gear or shaft when the input shaft or gear torque is known. 237. Planetary Gearboxes Calculation. Then, boom, you'll get the speed. Use this calculator to compute the relationships between motor and load torque or speed when using a gearbox. com The Gear Ratio Calculator is an essential tool to precisely determine the gear ratio, RPM, tire diameter, or MPH by inputting known values. You don’t need to do hard math or guess. May 14, 2025 · By entering basic information such as your chainring and cog sizes, wheel dimensions, and pedaling cadence, the calculator estimates key metrics like gear ratio, speed, gear development, and gear inches. S o = (2000 rpm) / (3. Simply input the number of teeth for the driving (input) gear and the driven (output) gear, and the calculator instantly provides you with the gear ratio. Q: Can this calculator handle idler gears? A: This calculator is designed for a simple two-gear system. Enter the number of teeth on your rear Oct 3, 2024 · While gear reduction changes torque and speed, it does not increase the machine's total power output. After making the changes, click on the "Show Speed" button to recalculate. A Gear train consists of two or more gears in series. There are more than one ways to use this calculator. Speed (mph) = Speed (m/s) × 2. Why do gear ratios matter in vehicle speed calculation? Gear ratios determine how engine power is translated into wheel speed, affecting acceleration, fuel efficiency, and overall performance. Use the redline RPM to figure top speed for each gear. Keep reading our article to find out: What is a gear? What is the gear ratio? How to find the gear ratio of a gear train; How to use the gear ratio to calculate the speed of the output I've used your gearing calculator to help determine shift points, if changing rear gear ratio would help and also played around with tire size. Alternatively, you can manually input the gear ratio if it is known. P. To use this calculator, you need to input details such as the rotational speed of the input shaft, the gear ratio (if applicable), and the number of teeth on the input and output gears (for gear systems). How to Calculate Gear Reduction. Enter the gear ratio, select the calculation type (torque or speed), input the known value, and specify whether it's for the motor or load. This ratio is crucial for understanding how gear size changes will affect your system's mechanical performance. Learn more about Car Speed Calculator 1st Gear = 57. The gearbox ratio calculation is used in various real-life applications. Different gear ratios allow the driver to adjust the vehicle's speed and torque according to driving conditions. Explanation The calculator will show “Invalid input” as division by zero is not possible. A gear is a toothed wheel that can change the direction, torque, and speed of rotational movement applied to it. aeit jssy hvkz slchrjlv nynp qbjqwph niq wwnimz hzev knykou