How is differential gear ratio calculated?
The calculation uses the number of teeth in the ring gear and divides it by the number of teeth in the pinion gear to provide you with a “[result] to 1” ratio. For example, if the pinion gear has 41 teeth, and the ring gear has 11 teeth, the ratio would be calculated as 41/11, which is equal to 3.73 = 3.73:1.
How do you calculate gear ratio speed?
To calculate speed ratio, otherwise known as gear ratio, you divide the number of teeth of the input gear by the number of teeth of the output gear.
How do I identify my GM front differential?
Information about Differentials in GM vehicles can usually be obtained by looking at the RPO or “Regular Production Option” codes contained in the Service Parts Identification tag in the glovebox. Whenever possible, reference the tag numbers when ordering parts for your Differential.
What is a good diff ratio?
Differential Gear Ratio determines the number of times the drive shaft (or pinion) will rotate for each turn of the wheels (or ring gear). So if you have a 3.73:1 gear ratio the drive shaft turns 3.73 times for every turn of the wheel. Lower ratios are generally desirable when going off-road.
How do you calculate speed with rpm and gear ratio?
The total gear ratio is a combination of the transmission, overdrive, transfer case and the axle ratios. Engine RPM divided by total gear ratio, multiplied by the tire diameter and converted for units of measurement, gives vehicle’s speed of travel.
What is rear differential gear ratio?
The rear axle gear ratio is the number of turns that the input of the differential at the driveshaft makes in relation to its output at the rear wheels. Different gear ratios can have different effects in the way a vehicle performs.
How do you determine axle ratio?
When attempting to find the axle ratio of an unknown gear set-up, it is possible to count the teeth on both the ring and pinion gears and divide the number of teeth on the ring gear by the number of teeth on the pinion gear. The result is the final gear ratio of the axle.
How do you calculate rear end ratio?
Step 1 How to Calculate Your Rear End Ratio. Here is the formula to calculate rear end ratio: =(60*RPM)/(Tire Size*Xmission Final Ratio*Road Speed) Here’s what you need to know: Your Tire size in a number represented as “revolutions per mile”.
How do you calculate tire ratio?
To calculate the effective drive ratio of the new tires, multiply the diameters together, then multiply that figure by the gear ratio as follows: 26/28 = .92857142857. .92857142857 x 3.55 = 3.2964 or 3.30. As you can see, the larger tires reduce your final drive ratio to 3.30—a measurable difference.