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# How do you calculate 4 gear ratios?

## How do you calculate 4 gear ratios?

To calculate the gear ratio: Divide the number of driven gear teeth by the number of drive gear teeth. In our example, it’s 28/21 or 4 : 3. This gear ratio shows that the smaller driver gear must turn 1,3 times to get the larger driven gear to make one complete turn.

## How is gear ratio calculated?

The gear ratio in a transmission is the ratio between the rotational speeds of two meshing gears. 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).

What is a 5 to 1 gear ratio?

For example, if a motor drives a 12T gear to a driven 60T gear on an arm, the 12T driving gear has to rotate 5 times to rotate the 60T driven gear once. This is known as a 5:1 ratio. The torque output is 5 times as much, however, the speed output is only 1/5.

### How can you tell the difference between a 3.73 and a 4.10 gear ratio?

So for gear ratio of 3.73, for every one turn of the ring gear, the pinion will turn 3.73 times and for gear ratio of 4.10, for every one turn of the ring gear, the pinion will turn 4.10 times. The ratio is the number of teeth on the driven gear (ring) divided by the number of teeth on the drive gear (pinion).

### How is pulley ratio calculated?

There are complicated formulas for determining pulley ratios but in generic, layman terms, simply divide the driven component (pump) by RPM, the driver component (motor or engine) rated by RPM to get the required ratio. In the example below, the pump RPM is 1070, for full output, while the motor is 1750 RPM.

How do I determine my axle ratio?

Method 1: Count the number of teeth on the ring gear and the pinion. Divide the number of the ring gear’s teeth by the number of the pinion’s teeth. This will give you the axle ratio.

#### What does a 4.10 gear ratio mean?

What Is a Gear Ratio? When you hear people refer to numbers like 3.08, 3.73, or 4.10, they’re talking about the ratio of the ring-and-pinion gears in the rear axle—hence, the numbers are more accurately 3.08:1, 3.73:1, or 4.10:1. That also means that for every one turn of the ring gear, the pinion will turn 4.11 times.

#### What is a 4 to 1 gear ratio?

The gear ratio in your example reads 4 to 1 (4:1). This means the input(drive gear) turns 4 times to the output(driven gear) 1 time.

What does 3.55 axle ratio mean?

Automakers build trucks with a range of optional axle ratios. Technically, the number should be expressed as a ratio, such as 3.55:1, meaning the drive shaft turns 3.55 times for each turn of a wheel. But that gear ratio would most commonly be referred to as “3.55” or simply “three fifty-five.”

## What are 3.55 gears good for?

PERFORMANCE: The larger the axle ratio number, the quicker the truck will accelerate. For example, a truck equipped with 3.55:1 axle gearing will accelerate faster than one equipped with a 3.31 axle ratio.

## What is the gear ratio on a 4×4 truck?

Differential Gear Ratio The gear ratio most interesting to 4×4 truck owners is the ratio between the driveshaft and axles – the differential gear ratio or axle gear ratio. It is controlled by the number of teeth on the ring vs. the pinion. A ratio of 4.56 means that as the axle turns one whole circle the driveshaft turns 4.56 circles.

What determines the gear ratio of a drive shaft?

It is controlled by the number of teeth on the ring vs. the pinion. A ratio of 4.56 means that as the axle turns one whole circle the driveshaft turns 4.56 circles. The higher the number the lower the ratio becomes. The correct axle gear ratio is important for drivability and economy.

### What is the gear ratio of a 20 and 30 gear combination?

For the sake of simplicity, let’s say I have transmission gears that have 20 and 30 teeth for a gear ratio of 1.5:1 (30/20 = 1.5) and I have a rear pinion of 13 teeth and ring gear of 52 teeth for a final drive ratio of 4.0:1 (52/13=4.0). How do I calculate the OVERALL gear ratio of that combination?

### How many gears in one axle and not the other?

It is perfectly ok to run 4.09 gears in one axle and 4.11 gears in the other. The general rule of thumb for any 4×4 vehicle is for the front and rear ratios to be within 2% of each other (this amount is easily absorbed within the backlashes in the drivetrain) and the difference between 4.09 and 4.11 gears is less than one-half of one percent.