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Lunchbox Locker: Everything You Need to Know

Lunchbox Locker: Everything You Need to Know

Lunchbox lockers are an essential piece of equipment for off-road vehicles. They provide power and durability to your vehicle by locking the differential in place, allowing you to navigate through any terrain. What is a lunchbox locker?

A lunchbox locker is a type of differential found in off-road vehicles. They are used to help get the vehicle through difficult terrains by splitting the power evenly between both front and rear axles. This prevents the wheels from spinning separately and causing the vehicle to get stuck.

When choosing a lunchbox locker for your vehicle, it is important to consider the maker and model of your off-road vehicle. This will help to ensure that you have the power you need to make your way through any terrain. Remember, a lunchbox locker is a great investment for anyone who loves off-roading!

Why Is It Called ‘Lunchbox’?

The name “Lunchbox” is originated from the idea of packing the lunch in a reusable “lunchbox”. The same lunchbox can be used every day to pack different lunch items. This specific is analogous to the “lunchbox”.

Types of Lunchbox Lockers:

There are several different lunchbox lockers available, including air lockers, electric lockers, cable lockers, and detroit lockers. They all work in the same way, by locking the front and rear axles together. However, each type has its unique benefits and drawbacks.

Air Lockers:

Air lockers are the most common type of lunchbox locker. When activated, they are powered by compressed air, which locks the front and rear axles together. This makes them ideal for off-road use, as they can easily power through difficult terrain.

Electric Lockers:

Electric lockers are also a popular choice for off-road vehicles. When activated, they are powered by electricity, which locks the front and rear axles together. This makes them very reliable and durable, as they do not rely on compressed air. However, they can be more expensive than other types of lunchbox lockers.

Cable Lockers:

Cable lockers are the cheapest type of lunchbox locker. They work by locking the front and rear axles together with a cable. While this is not as reliable or durable as other types of lockers, it is a good option for those on a budget.

Detroit Lockers:

The Detroit Locker is a fully automatic locking differential that provides incredible traction for moderate to extreme vehicle applications. Its bullet-proof, unique design is made to keep both wheels in drive mode – even if only one wheel is not on the ground. It can work forward or backward. It’s strong locker and has parts that need no maintenance.

How Does a Lunchbox Locker Work?

Lunchbox Locker: Everything You Need to Know
Lunchbox Locker Working Principle
So, how does a lunchbox locker work? Essentially, it locks the front and rear axles together, which allows the vehicle to power through difficult terrain more easily. But, it needs to remain open in normal driving conditions to allow the differential to work properly.

There are several different types of lunchbox lockers available, each with its unique benefits and drawbacks. So, whether you are looking for an air locker, electric locker, or cable locker, there is sure to be a lunchbox locker that is perfect for you.

Advantages and Disadvantages of a Lunchbox Locker:

The lunchbox locker is a differential locking device used in off-road vehicles to improve their traction. It works by locking the two axles together to rotate as one. This increases the resistance to wheel spin and improves the vehicle’s traction.

The main advantage of a lunchbox locker is improving the vehicle's traction in difficult terrain. This makes it easier to get up hills and through rough terrain. The locker also helps to prevent wheel spin, which can cause the vehicle to lose traction and become stuck.
The main disadvantage of a lunchbox locker is making the vehicle harder to steer. This is because the locked axles will resist any change in direction, making the vehicle difficult to turn. The locker can also cause the vehicle to drift more when cornering.

Overall, the lunchbox locker is a useful device that can improve the traction of an off-road vehicle. However, it does have some disadvantages that should be considered before purchasing one.

Pros of Lunchbox Locker:

  • Can improve traction in difficult terrain
  • Can help prevent wheel spin 

Cons of Lunchbox Locker:

  • Can make steering more difficult
  • Can cause the vehicle to drift more when cornering.

How to Install a Lunchbox Locker in Vehicle?

Lunchbox lockers are differential lockers that can be installed in off-road vehicles. They offer increased traction and performance in difficult terrain and are available in manual and automatic versions.

The installation process for a lunchbox locker is relatively straightforward, but it is important to follow the manufacturer’s instructions carefully.

STEP 1: The first step is to remove the differential cover and drain the oil.

STEP 2: Then, the old spider gears and cross pins must be removed from the differential.

STEP 3: The new locker assembly can be installed and the differential cover replaced.

STEP 4: Finally, the oil needs to be refilled.

It is important to note that lunchbox lockers should only be installed in vehicles specifically designed for them. They should not be used in standard passenger cars or light trucks, as they can cause damage to the drivetrain.

If you consider installing a lunchbox locker in your off-road vehicle, it is important to speak with a qualified technician to ensure that it is done correctly. For more information, visit the website of the manufacturer of your chosen locker.

Should you Install a Lunchbox in Your Vehicle?

There are many reasons why you might want to install a lunchbox locker in your off-road vehicle. Perhaps the most obvious is that it can provide extra traction in difficult terrain, allowing you to get over obstacles that might otherwise be insurmountable. Lunchbox lockers are also great for improving handling and reducing wheel spin on slippery surfaces.

Another big advantage of a lunchbox locker is that it can help you save money on repairs. If you’re frequently getting stuck in tough spots, your vehicle’s components will likely take a beating. A lunchbox locker can help minimise the damage, keeping your vehicle running for longer.

That said, there are a few things to consider before installing a lunchbox locker. They can be expensive, and if you’re not using your vehicle for off-road adventures, the extra expense may not be justified. Additionally, lunchbox lockers can add a fair bit of weight to your vehicle, affecting performance on the road.

Ultimately, whether or not to install a lunchbox locker is up to you. But before making a decision, it’s important to weigh all the pros and cons and make sure that the benefits outweigh the costs.

In conclusion, installing a lunchbox locker can be a great way to improve your off-road driving experience. But make sure you consider all the pros and cons before deciding.

When to Install a Lunchbox locker?

There are a few telltale signs that you may need to install a lunchbox locker in your vehicle. The first sign is when you start experiencing difficulty getting power to the ground.

When this happens, the lunchbox locker can help send the power to the ground more efficiently, giving you back the power you need to get moving.

Another sign that you may need a lunchbox locker is when you start experiencing wheel hop. This usually occurs when you apply the gas while turning, and it can cause serious damage to your vehicle over time. The lunchbox locker can help keep the power going to the ground and prevent the wheel hop from occurring.

If you are experiencing any of these issues, it is time to consider installing a lunchbox locker in your vehicle. It can help to improve your performance and keep your vehicle running smoothly. Contact a trusted mechanic to help you install this important piece of equipment in your car.

In conclusion, if you are experiencing difficulty getting power to the ground or wheel hopping, it is time to consider installing a lunchbox locker in your vehicle. This important piece of equipment can help to improve your performance and keep your car running smoothly. Contact a trusted mechanic today to get started on this process.

What are the Problems with Lunchbox Lockers?

Off-road vehicles are often used in difficult terrain, and the lunchbox locker is a popular modification to improve their performance. However, several problems can occur when installing a lunchbox locker.

  • One common problem is that the locker can cause the vehicle to become lodged in the mud or snow. This can be very difficult to get out of and damage the vehicle.
  • Another problem is that the locker can cause the vehicle to roll over. This can happen if the locker causes one of the wheels to lose traction, resulting in the vehicle rolling over.
  • Finally, the locker can also increase wear on the drivetrain components. When the locker is engaged, it forces the wheels to turn at the same speed, regardless of the terrain. This can cause increased wear on the drivetrain components.

These problems can be potentially dangerous and should be considered before installing a lunchbox locker. If you decide to install a locker, be sure to use caution and take all necessary precautions.

Commonly Used Lunchbox Lockers:

There are many different lunchbox lockers on the market, but which one is right for you? Here are the top 5 lunchbox lockers to install in your vehicle:

1. The Yukon YZLD44-4-30 Dana 44 Zip Locker:

Lunchbox Locker: Everything You Need to Know

The Yukon YZLD44-4-30 Dana 44 Zip Locker is a high-quality product that provides superior performance for off-road enthusiasts. It is made from durable materials that can withstand the harsh conditions of off-road driving.
The Zip Locker allows you to drive your vehicle in any condition without the fear of getting stuck. It is easy to install, and it provides smooth, consistent operation. If you are looking for a reliable and durable locker for your Dana 44 axle, the Yukon YZLD44-4-30 Dana 44 Zip Locker is perfect.

2. The Spartan Locker from USA Standard Gear:

Lunchbox Locker: Everything You Need to Know

The Spartan Locker from USA Standard Gear is designed for off-road racing and provides reliable traction in all conditions.

This locker gives you the confidence to take on any terrain, knowing that your vehicle will be able to handle anything that comes it’s the way. The Spartan Locker is a great choice for those who want the best possible performance from their vehicle.

3. The Grizzly Locker:

Lunchbox Locker: Everything You Need to Know

The Grizzly Locker is the ultimate locking differentials for street, off-road, and racing use. Its precision machined parts, and patented design makes it the strongest, most reliable locker available. The Grizzly Locker will fit into a stock carrier without any modifications necessary.

The Grizzly Locker’s robust design means that it can punish even the most demanding off-road applications. It features an 8620 steel internal gear set with hardened alloy steel drive pins. The case is made from high strength nodular iron.

Lunch Box Locker Name

Price

Product Link

Yukon YZLD44-4-30 Dana 44 Zip Locker

$947.99

USA Standard Gear (SL D44-30) Spartan Locker

$248.98

Grizzly Locker for GM/Chrysler 11.5 Differential 30-Spline

$1129.21

Final Thoughts:

If you plan to get a lunchbox locker, buy one for your front axle. This will almost entirely solve the on-road handling issues since your vehicle will be in 2WD on the road, and the locker won’t lock and unlock randomly.

Also Read:

What Is a Diff Lock? Do You Need It?
Do Snow Chains Work? (on Snow, Mud and Dirt Roads)

Frequently Asked Questions (FAQs):

What is the purpose of a lunchbox locker?

A lunchbox locker is a device used to lock the differential in off-road vehicles. This allows for more power to be transmitted to the wheels travelling over the roughest terrain. Without a lunchbox locker, the vehicle would be limited to the power available from the engine to the wheels.

How do you engage a lunchbox locker?

Here are a few tips on how to engage a lunchbox locker in off-roading:

  1. always engage the locker while the vehicle is in gear
  2. make sure the tires are properly aligned before engaging the locker
  3. use a low gear when engaging the locker
  4. make sure the vehicle is properly balanced before engaging the locker
  5. never engage the locker while the vehicle is moving faster