# Quick Answer: What Is Gear Ratio In Motorcycle?

## What do gear ratios tell us?

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. For every rotation of the 45-tooth gear, the 15-tooth gear must rotate 3 times.

## Which gear ratio is 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.

## What sprocket is best for speed?

For more bottom end and faster acceleration, use a small countershaft/front sprocket or large rear sprocket. For every 1 tooth that you change on the front sprocket is like changing 3 to 4 teeth on the rear (and that’s true for higher gearing ratios, too).

## Does gearing effect 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.

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## 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 do I know what gear ratio I need?

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).

## Is 3.08 a good gear ratio?

Yes, you are exactly right, towing with a 6 speed with 3.08 s is still better than towing with a 4 speed and 3.73s. If its a heavy trailer, you will probably never use 5th and 6th gears, but who cares? crank turns to rotate the rear wheels once that counts.

## Is 3.23 a good gear ratio?

The engineers likely chose the numerically low gear ratio for fuel economy reasons. A later swap to a four-speed and 3.23 rear gears woke up the performance of the car considerably. Yes, highway rpm increased as well, but I rationalized it by deciding that 3.23 gears provided a good balance of performance and economy.

## Are 3.73 or 4.10 gears better?

The difference between a 3.73 vs 4.10 gear ratio can cause many questions for the automotive enthusiast. 3.73 VS 4.10 Ratio.

3.73 Ratio 4.10 Ratio
Not as fast off of the line Quicker Off The Line
Lower Torque Higher Torque
Better Gas Mileage Decreased Gas Mileage
Higher Top Speed Lower Top Speed
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## How can a sprocket increase top speed?

To increase low end power, you should increase size of rear sprocket or decrease size of front sprocket. To increase top speed, you should reduce size of rear sprocket or increase size of front sprocket.

## Is more teeth on a sprocket better?

Adding teeth to the front and rear sprockets have opposite effects. Installing a larger countershaft sprocket creates higher gearing, while a larger rear sprocket lowers gearing. For taller gearing, a one- tooth -larger countershaft sprocket is often the best bet.

## Is a smaller sprocket faster?

Substituting a larger front or smaller rear sprocket lowers the ratio (sometimes called “taller” gearing), resulting in more speed for a given engine rpm. Likewise, a smaller front or larger rear sprocket gives less speed for a given rpm (” shorter ” gearing).

## 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.

## Does BHP increase top speed?

In general, it will just accelerate faster. To be fair, adding power to the engine will also increase top speed – but depending on how much power you add, you might get like an extra mph or two. The Veyron, to hit it’s top speed of 254 mph needs ALL of its 1,200 HP.

## Does increasing HP increase top speed?

No, HP does not determine MPH in a gear, the gear ratio does. Although there are hypothetical ways that HP can seem to make the vehicle go faster in the same gear, it doesn’t actually change the speed capacity of that gear as long as the engine RPM is limited.