Often asked: What Is Transmission Gear Ratio?

Is it better to have a higher or lower gear ratio?

A lower (taller) gear ratio provides a higher top speed, and a higher (shorter) gear ratio provides faster acceleration.. Besides the gears in the transmission, there is also a gear in the rear differential.

How do you read transmission gear ratios?

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.

What is the purpose of gear ratio?

Gear ratio is used to measure a wide variety of mechanical items, including clocks, automobiles, farming machines and equipment and more. The gear ratios help determine how well the machine is performing. Circumferences are used to base the ratio upon.

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What does 4.10 gear ratio mean?

A 4.10 axle ratio will provide improved acceleration in stop and go city traffic. A lower gear (higher numerical) ratio provides more low-speed wheel torque, which makes it easier to get the vehicle moving when pulling a trailer or carrying a heavy load.

Are 3.73 or 4.10 gears better?

Use this rule of thumb: The higher the gear ratio, the easier it is to get the vehicle moving and better accelerating, but lowers top speed. WHICH GEAR RATIO IS FOR YOU?

3.73 RATIO 4.10 RATIO
Lower torque Higher torque
Better gas mileage Worse gas mileage
Higher top speed Lower top speed

What gear ratio is best for fuel economy?

Automakers Offer Variety of Axle Ratios Step one in understanding axle ratios is to know what the numbers signify. The lower the number, the better fuel economy, and the higher the number the more towing power you have, but fuel economy suffers. For instance, a 3:31 gets better fuel economy than a 3:73.

Does gear ratio affect horsepower?

It doesn’t affect horsepower or tourqe at all. Gears make your rear tires turn faster or slower. It also effects your top end speed and milage. The reseaon you dyno in 4th gear is becouse its a 1-1 ratio.

What is a good gear ratio for highway driving?

With a 3.08:1 rear gear, the effective First gear ratio is equal to a 2.20:1 First gear Muncie four-speed with 4.56:1 rear gear. In the quarter-mile, Fourth gear is equivalent to running a 3.79:1 rear gear. But shift into 1:1 Fifth gear and enjoy the highway cruising rpm of a 3.08:1 rear gear.

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What does a 4 11 gear ratio mean?

4.11 is a gear ratio.. basically it means that the the pinion or driveshaft will turn 4.11 times for each rotation of the tires. The higher the ratio, the more times the the the engine, transmission, transfer case, etc turns to make the wheels spin which yields less top speed but more low end torque (usually).

Can gear ratio be less than 1?

Typically, gears 5 and sometimes even 4 have ratios less than 1, which means that engine RPM will be less than wheel RPM in those gears. For example, gear ratio for 5th gear can typically be 0.9. Such gears (with gear ratios of less than 1 ) are called overdrive gears.

What is the first gear ratio?

For the close- ratio transmission, first gear has a 4:1 ratio or 4, and second gear has a ratio of 3:1 or 3, so the progression between gears is 4/3, or 133%. Since 133% is less than 200%, the transmission with the smaller progression between gears is considered close- ratio.

What is gear speed?

A gear is a simple mechanical device that transmits rotational motion (force) to another gear or device. Thus, the larger a gear’s radius, the slower its rotational speed. Gear Ratios. When the teeth of two gears interlock, the gears themselves move at the same speed (meters per second or feet per minute).

WHAT WILL 4.10 gears do?

Installing 4.10 gears improves the car’s performance on the track but with negligible effects to the highway driving. Switching from a gear set of 3.55 or 3.73 to 4.10 gears will affect your gas mileage slightly as your engine will be turning more times to rotate the rear wheels once.

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Are 3.73 gears good for highway?

Well, if you plan on doing a lot of freeway driving, you don’t want to choose a gear that’s too low for your car because you’ll be going down the freeway at too high of an RPM. Shorter gears (higher numbers) are much better suited for accelerating, such as 3.55, 3.73, 3.91’s, 4.11’s etc.

Is 3.42 or 3.73 better?

The 3.42 is fine for towing smaller boats, plus you will get better gas mileage for everyday driving. If I were towing frequently on hilly roads, I might would go for the 3.73 for better gas mileage while towing, but the 3.42 should be fine with a 205.

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