What Do Gear Ratios Tell Us?

by | Last updated on January 24, 2024

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A gear ratio is the ratio of the number of rotations of a driver gear to the number of rotations of a driven gear . A colon is often used to show a gear ratio: gear ratio = rotations of a driver gear : rotations of a driven gear. ... The order of the two numbers in a ratio is very important.

What does a 4.10 gear ratio mean?

Gear Ratio: the ratio of the ring and pinion gears in the rear axle . So, if you have a 4.10:1 (sometimes 4.10) rear axle, the pinion will turn 4.10 times for every single turn of the ring gear or in other words, for every 4.10 turns of the driveshaft, the rear wheel will spin once.

What are the benefits of gear ratios?

What is the purpose of gear ratio? The primary purpose of the gear ratio is to reduce the torque by increasing the speed, and vice versa . Your car won’t move at higher gear ratios because, at the initial stage, you need more torque than power.

What is a good gear ratio?

In the real world, typical street machines with aspirations for good dragstrip performance generally run quickest with 4.10:1 gears . Lower gears are required if the car is very heavy, or if the engine makes its power at the upper end of the rpm scale.

Are 3.73 or 4.10 gears better?

4.10s are going to accelerate faster and decelerate faster on lift. However the trade off is greater fuel consumption per mile driven and higher engine speed per given road speed. In basic terms the 4.10s will feel quicker and 3.73 will feel faster .

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. ... This is known as a 1:5 gear ratio. In this case, the speed output is 5/1 times as much, however, the torque output is 1/5.

Does higher gear ratio mean faster?

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. This is known as the final drive, differential gear, Crown Wheel Pinion (CWP) or ring and pinion.

Are 4.10 gears good for highway?

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.

Are 3.73 gears good for highway?

Are 3.73 gears good for highway? Rear end gears (2.79’s, 3.00’s, 3.25’s, etc) are great for freeway driving, bit not good for 0-60 MPH or accelerating from a dead stop. Shorter gears (higher numbers) are much better suited for accelerating, such as 3.55, 3.73, 3.91’s, 4.11’s etc.

Does gear ratio affect gas mileage?

Gear Ratio Effect

The transmission gearing directly affects the fuel economy at a given speed . The engine’s rpm and fuel consumption are generally lower in higher gears.

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.

What gear ratio is best for jerkbaits?

Jerkbaits: Jerkbait fishing is optimized by using a reel that has a gear ratio of approximately 6.3:1 or slightly higher . This speed reel allows for enough power to straight retrieve deeper diving jerkbaits, but enough speed to take in line slack when going through the jerkbait retrieve cadence.

What gear ratio is best for flipping?

When you are pitching and flipping you want a reel that has a high gear ratio. The best gear ratio for flipping is 8:1:1 in my opinion, the faster the better. A reel with a high gear ratio will allow you to pick up line quickly and ensure you don’t break off when the fish gets you wrapped around in cover.

Is 3.73 a good gear ratio?

FACT: A 3.73 axle ratio is ideal for towing heavy loads on flat terrain and will produce increased fuel economy during steady-state, long-distance highway driving.

What gear ratio is best for fuel economy?

For instance, a 3:31 gets better fuel economy than a 3:73. On the other hand, a 3:73 or perhaps a 4:10 will tow much more, while fuel economy greatly drops. The most popular rear end ratio in trucks today is the 3:55, which sort of averages towing power and fuel economy.

Are 4.10 gears good for 35s?

4.10 will be just fine for 35’s and Especially if you get a 4:1 transfer case for off road adventures. I recently went from 3.21 to 4.10 with 35′′ Terra Grapplers. It made a huge difference on my 2dr with manual transmission, It’s just about perfect around town. I run at about 2400rpm at 70 in 6th gear now.

David Martineau
Author
David Martineau
David is an interior designer and home improvement expert. With a degree in architecture, David has worked on various renovation projects and has written for several home and garden publications. David's expertise in decorating, renovation, and repair will help you create your dream home.