# How do kart gear ratios work?

Contents

The higher the gear ratio, the higher the top end speed; the lower the ratio, the stronger the acceleration (power). Click on Calculate. The results are the circumference of the drive wheel/tire combo (in inches), gear ratio and the potential maximum speed (in MPH). Our default is for a slow, safe junior kart.

## What is the best sprocket ratio for a go-kart?

2. Gear Ratio Chart

Sprocket 8 10
50 6.25 5.00
51 6.38 5.10
52 6.50 5.20
53 6.63 5.30

## How do you work out the gear ratio on a go-kart?

To determine your gear ratio, simply divide the rear axle sprocket by the clutch sprocket, so in the case of the above example, 60 divided by 12.

## Does a smaller sprocket Make a go-kart faster?

Smaller sprockets will make your kart faster, but only in terms of top speed. Larger sprockets will give your kart faster acceleration but a slower top speed.

## How do I make my go-kart gear faster?

Here are 9 ways to make your go-kart faster:

3. Install a Supercharger or Turbocharger.
5. Make Your Go-Kart More Lightweight.
6. Remove the Speed Governor.
7. Change to Larger Go-Kart Tires.

## Why does my go-kart take off when I start it?

If your go kart takes off by itself when the engine is started, with no one in the drivers seat, that is an indication that the clutch is badly in need of lubrication. Turn the engine off and park the machine up against a tree or fence to prevent it from taking off when you crank the engine again.

## What is a jackshaft on a go-kart?

A go-kart jackshaft is a mechanical component that transfers rotational force between the crankshaft and the axle. In essence, a jackshaft is a long shaft, which actually looks like an axle and is located in between the engine crankshaft and the rear axle.

## Is 15 mph fast for a go kart?

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240 mph.

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Cooling system: Liquid

## How fast will a 7 HP Go Kart Go?

This engine is a performer right out of the box, and should get your go kart running anywhere from 20 mph all the way up to 35mph in its stock form.

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## How many teeth should my go kart clutch have?

The sprocket on the engine and the one on the rear axle should have a ratio close to 1:6. This means for every tooth on the clutch there are six teeth on the rear sprocket. So if you count 10 teeth on the clutch there should be 60 teeth on the rear sprocket. (12 teeth on the clutch means a 72 teeth rear sprocket).

## How do you increase torque on a go-kart?

If you’re happy with top speed, but need more acceleration, change your chain sprockets to a lower gear ratio; more torque for low speed acceleration, top speed will suffer. Your present engine will give you either speed (HP) or acceleration (torque to the wheels).

## What better 10 or 12 tooth clutch?

The difference between a 10-tooth and 12-tooth clutch is that a 10-tooth clutch supports #40/41/420 chains, whereby a 12-tooth clutch supports a #35 chain. Additionally, the 12-tooth clutch also supports a lower gear ratio (5:1) compared to a clutch with a 10-tooth sprocket (6:1).

## What is a good gear ratio for a mini bike?

Ratios do vary with wheel size, weight & other conditions, however you should keep your gear ratio at approx 6 to 1. Any ratio either smaller or larger will put too much torque through the clutch and cause it to slip, which will cause the clutch to overheat and the clutch will no longer function.

## How fast does a 6.5 hp go-kart go?

In the box, the engine of the go-kart will perform right out of the box, and it can be tuned to run anywhere from 20 mph to 35 mph.

5 Hp Engine Go?

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Name 6.5 HP (212cc) OHV Horizontal Shaft Gas Engine EPA
Maximum speed (rpm) 3600 RPM

## Can you put bigger wheels on a go-kart?

Larger diameter tires will have very little effect on handling. Wider tires, however, will have a profound effect on the handling. The reason for that is it widens the contract patch, which is how much of the tire is touching the ground. So, if the vehicle understeers, then yes, wider tires will improve the handling.

## What size clutch do I need for a go-kart?

What is this? Always ensure that the clutch sprocket and the rear sprocket require the same chain size. You’ll see that in most cases, go-kart clutches are compatible with a #35 chain or #40/41/420 chains. The #35 is smaller and also used in bicycles.