How can I tell the ratio of my differential?
Turn the wheel TWO revolutions and count the number of driveshaft turns. The number of driveshaft rotations will help you determine your rear axle ratio. For example, if it turned 3 and a half times, it’s a 3.50:1 ratio. If it turned 4 and a quarter times, it’s a 4.25:1 ratio.
How do I calculate my gear ratio?
The gear ratio is calculated by dividing the output speed by the input speed (i= Ws/ We) or by dividing the number of teeth of the driving gear by the number of teeth of the driven gear (i= Ze/ Zs).
How do I know what rear differential I have?
Visual Differential Identification Without an ID tag, differentials are identified by the number of cover bolts, the distinctive shape of the cover, the number of ring gear bolts, and ring gear diameter. They can also be identified by whether the center section is an integral or dropout design.
Where is the gear ratio stamped?
Check the Differential Cover The axle may have a sticker, and on the differential cover, you might have a small metal tag that’s sticking out that will have the gear ratio stamped on it.
How do you read a gear ratio chart?
The ratio is the number of teeth on the driven gear (ring) divided by the number of teeth on the drive gear (pinion). So, if the ring gear has 37 teeth and the pinion has 9 teeth, the ratio is 4.11:1. That also means that for every one turn of the ring gear, the pinion will turn 4.11 times.
How do you find the rpm of a gear ratio?
The general rule is – large to small gear means ‘multiply’ the velocity ratio by the rpm of the first gear. Divide 60 teeth by 30 teeth to find the velocity ratio. Multiply this number (2) by the rpm (120). This gives an answer of 240rpm.
Can you tell gear ratio from Vin?
The gear ratio is usually listed in the VIN code located on driver’s door, the glove box, or the ID plate on the dashboard. Count the times a rear wheel goes around for one driveshaft turn: if its 3 1/2 it’s a 3.50:1. Divide the number of teeth on the ring gear by the number of teeth on the pinion gear.
The ratio is determined by the number of teeth on each gear wheel. Calculate the speed ratio of two gears by dividing the angular velocity of the output gear (represented numerically by the number of teeth) by the angular velocity of the input gear (represented numerically by the number of teeth).
What is the formula to calculate gear ratio?
Gear ratio can be calculated by dividing the diameter of both gears or their number of teeth. If gear ratio > 1 then it’s speed reduction, if smaller then it’s for system to speed up, if equal one it’s just for transmitting power with same speed to transmit it just to another location depending on geometry of design.
Which is Gear(s) determine ratio?
The Gear ratio is the ratio of the number of teeth of the driven gear and driver gear. It is used to calculate the speed and torque of the output shaft when input and output shafts are connected using a gear train. Input gear where torque is applied is known as driver. Whereas output gear is known as a driven gear.
How to tell which gear ratio I have?
Part 3 of 5: Determining an approximation of your car’s gear ratio Place a visible mark on the driveshaft near the differential housing. Use the chalk or paint pen. Spin the driveshaft by hand. While spinning the driveshaft, count the revolutions by watching the markings, as well as counting the revolutions of the tire at the same Continue spinning the driveshaft.