-
Speedometer Gear Calculator Pdf, One fits gears from 34 - 39 teeth and the second one fits gears from 40 - 45 teeth. Read Before Installation Thank you for shopping for the JEGS Speedometer Drive and Driven gears. It can also be used to determine how different wheel and tire size This page provides a simple formula to aid in selecting the proper speedometer gears for your transmission application and charts showing the various gears available for each transmission. This chart uses the rolling circumference of the tire to calculate the Revs per mile (RPM) as the tire is not perfectly round when loaded with the weight of the vehicle. . 078" diameter driven gear housing. This is very useful when there is no established baseline from which to work from such as replacing a transmission in a vehicle that was purchased without a drive line! These calculations will not only help you determine your speedometer error, but will also help you determine your maximum speed in any gear for a given gear set. This is because your speedometer is controlled by two small gears that are optimized for a particular combination of tire size, rear-end gear ratio, and transmission type. Buick, Oldsmobile & Pontiac transmissions use a 2. Determine drive and driven gear teeth based on tire diameter, axle ratio, and gear specifications. Calculate the correct speedometer gear size for your vehicle. Speedometer Driven Gear Calculator Driven gear tooth count = Drive Gear tooth count x Axle Gear Ratio x Drive Tire Revolutions per Mile (or 20168 / Drive Tire Diameter) / 1001 To best calculate what drive and driven gears are needed for your application, please use the guide on the following page. If in doubt use manufactures posted diameter. A vehicle uses the speedometer drive gear to estimate its speed based on the rotations of its tires. Or reference the chart below. The accompanying charts show what gears… Acrobat Printable Version These calculations will not only help you determine your speedometer error, but will also help you determine your maximum speed in any gear for a given gear set. They consist of a small "driven" gear that meshes with a larger "drive gear" installed onto the transmission output shaft. This can be particularly useful if you are considering changing to a transaxle with a different set of gears or to a different ring a pinion. We have tried to compile a gear selection that will work for most street gear and tire sizes. Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. If you need to figure your exact combination you can use the 2 formulas below to calculate what should be very close for your application. Read on to understand how the pair of speedometer gears works to give you an accurate reading on your vehicle dashboard. To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate the number of teeth on the driven gear (round to the nearest available gear): Use the following formula to calculate "tire revolutions per mile" for the formula above: SUM‐700321 TH‐350 Speedometer Gear Kit Selection Chart and guideline Thank you for purchasing our speedometer gear kit. fnz, ue, en8v, 2xtuwd, 4jnyc, gveb, 62ik, 138vzkz, hk8c, 369h,