Bicycle sprocket diameter calculator.
Calculate sprocket diameters according to ASME B29.
Bicycle sprocket diameter calculator We also have a Sprocket Diameter Calculator that determines a sprockets diameter based on the pitch of the chain and the number of teeth. Check Lock Centers and adjust sprockets - Chain links will adjust to maintain nearest to Use the Sprocket Size Calculator to easily determine the final speed of your vehicle based on engine RPM, sprocket teeth, and tire diameter. Calculate sprocket diameters according to ASME B29. This tool is especially useful for bikes. Sprocket Calculator - for bikeSelect current size of front and rear sprockets as well as the new sizes. Enter chain pitch, number of teeth, and roller diameter to get pitch diameter, bottom diameter, caliper diameter, tolerances, and approximate outside diameter. It simplifies the process of determining the diameter of a sprocket, a crucial component in various mechanical systems such as bicycles, motorcycles, industrial machinery, and more. We also have a Chain Sheldon Brown's Derailer Gear/Internal-Gear Calculator Translation of this article: French German by Sheldon "Gain Ratio" Brown You need to enter data for at least one chainring, and at least one sprocket unless you choose a stock cassette. Listing of internal hubs is A>Z by manufacturer, then by number of speeds, type and age. When changing sprockets, you can adjust Chain Links to maintain (nearest to) current Sprocket Centers (eg: to keep motorcycle rear wheel within adjustment range). We use Sprocket Specialists for many of our sprockets and since we raced bikes at the Bol D'Or in 1977. The number is derived from a simple formula: (chainring size / cog size) X (wheel size X PI). Want to know more about the App? Take a look at the support . Oct 26, 2025 · As sprockets are rarely listed with their actual diameter I have added a sprocket size calculator to the Gearing Commander. How the Calculator Works This calculator multiplies the number of teeth by the pitch diameter and then by Pi (π) to derive the Oct 6, 2025 · This Sprocket Ratio Calculator helps you quickly determine the gear ratio between the drive and driven sprockets in a chain-driven system. Simply input your driving sprocket’s speed and teeth count, along with the driven sprocket May 5, 2024 · How to Use the Sprocket Calculator Simply enter the number of teeth and the pitch diameter in inches for the sprocket you are analyzing. P Feb 22, 2024 · The Sprocket Diameter Calculator is an indispensable tool for gear mechanics and engineers alike. Sprocket Diameter Calculator On Mike Geokan's Bonneville Bullet we have a vacuum pump assembly run off the jackshaft to increase horsepower by keeping upper and lower end pressures negative instead of positive. Bicycle Gear Ratio Calculator Enter the details of your bicycle to calculate the gear ratio or try some variations to get the perfect setup for your needs. Your result will be displayed in the “Result” field. Check Lock Centers and adjust sprockets - Chain links will adjust to maintain nearest to Feb 22, 2024 · The Sprocket Diameter Calculator is an indispensable tool for gear mechanics and engineers alike. Oct 6, 2025 · Whether you’re designing a bike drivetrain, industrial machinery, or a DIY project, finding sprocket speeds is crucial for optimal performance. Can I use this calculator for bicycle sprockets? Yes, this calculator works for any type of chain sprocket including bicycle sprockets, as long as you know the chain pitch, number of teeth, and roller diameter. iPhone/iPad App Our BMX Gear Calculator was released on iTunes July 1, 2013. It is activated by loading your bike, adjusting the sprocket details and loading of the ' Sprocket Diameter Graph ', using the button below the table called "Top speed in Mph per gear for 49 final drive combinations at M. Bike Gear Ratio Calculator Calculate gear ratio, gear inches and chain angle of your bike based on the chainring and sprocket sizes. 1. Jul 20, 2024 · A rear sprocket size and speed calculator helps find the best rear sprocket for your bike or motorcycle. We hope you will find it as useful as we do. This is the distance your bike rolls with one rotation of the cranks. We used the calculator to determine the diameter of the chain sprockets to check clearance issues when building the vacuum pump / jackshaft assembly pictured above. It helps you determine the exact RPM of your driven sprocket in seconds. By entering wheel size, gear ratio, and target speed, you can adjust your bike’s rear sprocket for better acceleration, speed, or fuel efficiency. The bike gear calculator shows the tables of gear ratios and gear inches for chosen chainring and cog ranges. The lower the chain revolutions, the more frequently each chain link engages the same sprocket tooth, so greater and more uneven the wear. Clicking on "calculate" generates two new output pages: a full-size one, and a small one which you might print out and tape to your bicycle's handlebar stem for reference. Press the “Calculate” button to see the circumference of the sprocket. This sprocket speed calculator takes the guesswork out of chain drive calculations. eifrsrp4qf0ddyz3449o71gjnhflal8iwczrcrmtjy46l3dd60agnb6kp