Do you own an Arrma 1/8 scale RC vehicle and want to upgrade to 17mm hex wheels? Converting Arrma 14mm to 17mm hex is a relatively simple process that can greatly enhance the performance and handling of your RC car. Here’s a comprehensive guide to help you make the switch smoothly.
To begin the conversion, you’ll need to gather a few essential parts. These include 17mm hex hubs, 17mm wheel nuts, and 17mm wheel hexes. Once you have the necessary parts, you can start the conversion process by removing the existing 14mm hex hubs from your Arrma vehicle. This can be done using a 5.5mm hex wrench. After the 14mm hex hubs are removed, you can install the new 17mm hex hubs in their place. Tighten the hex hubs securely using the 5.5mm hex wrench.
Next, you’ll need to install the 17mm wheel nuts onto the hex hubs. These wheel nuts will secure the wheels to the hex hubs. Once the wheel nuts are in place, you can install the 17mm wheel hexes onto the wheels. The wheel hexes will center the wheels on the hex hubs and ensure that they rotate smoothly. Finally, tighten the wheel nuts to secure the wheels to the hex hubs. Congratulations! You have now successfully converted your Arrma 14mm hex to 17mm hex. Enjoy the improved performance and handling that comes with this upgrade.
Overview of Arrma Hex Conversion
Arrma vehicles typically come with 14mm hex hubs, which can limit tire selection. Converting to 17mm hex hubs opens up a wider range of aftermarket tires and wheels, allowing for greater customization and performance tuning. The process of converting from 14mm to 17mm hex is relatively straightforward and can be completed in a few simple steps.
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Factory Hex Differences
The primary difference between 14mm and 17mm hex hubs is the size of the hex opening. 14mm hex hubs have a 14mm wide opening, while 17mm hex hubs have a 17mm wide opening. This difference in size is necessary to accommodate the larger diameter of 17mm hex wheels.
In addition to the difference in size, 17mm hex hubs are typically made from a stronger material than 14mm hex hubs. This is because 17mm hex wheels exert more force on the hubs than 14mm hex wheels. The stronger material helps to prevent the hubs from bending or breaking under load.
Benefits of Converting to 17mm Hex
There are several benefits to converting your Arrma vehicle to 17mm hex. These benefits include:
- Wider range of tire and wheel options: 17mm hex hubs allow you to use a wider range of aftermarket tires and wheels. This gives you more options for customizing the look and performance of your vehicle.
- Stronger hubs: 17mm hex hubs are typically made from a stronger material than 14mm hex hubs. This makes them less likely to bend or break under load.
- Improved performance: 17mm hex hubs can improve the performance of your vehicle by providing a more secure connection between the wheels and the axles.
Things to Consider Before Converting
Before you convert your Arrma vehicle to 17mm hex, there are a few things you should consider. These things include:
- Cost: Converting your Arrma vehicle to 17mm hex will require you to purchase new hubs, wheels, and tires. This can be a significant expense, so it is important to factor in the cost before you begin the conversion.
- Compatibility: Not all Arrma vehicles are compatible with 17mm hex hubs. Before you purchase any parts, make sure that your vehicle is compatible with the conversion.
- Time: Converting your Arrma vehicle to 17mm hex will take some time. It is important to set aside enough time to complete the conversion properly.
Advantages of Converting to 17mm Hexes
Increased Wheel and Tire Options
Converting to 17mm hexes provides access to a significantly wider range of wheel and tire combinations compared to the stock 14mm hexes. This open the door to a variety of performance enhancements and customization options like:
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Improved Traction:
Larger tires and more aggressive tread patterns improve grip on different surfaces.
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Enhanced Handling:
Wider wheels offer better cornering stability and handling at higher speeds.
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Custom Styling:
A wider selection of wheels allows for more personalized aesthetics and matching with specific vehicle paint schemes or decals.
Improved Durability and Strength
17mm hexes are generally larger and more robust than 14mm hexes. This provides:
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Reduced Stripping:
Larger hexes distribute stress more evenly, reducing the risk of stripping under heavy loads or hard impacts.
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Enhanced Impact Resistance:
Stronger hexes better withstand the impact of obstacles like rocks or curbs, protecting the wheel hubs and other components.
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Durability in Extreme Conditions:
17mm hexes are less prone to bending or breaking in demanding off-road environments.
Compatibility Considerations for Arrma Models
Identifying Compatible Models
Determining the compatibility of an Arrma vehicle with a 17mm hex conversion requires careful consideration of the vehicle’s specific model. The Arrma line of off-road vehicles includes various models, and not all are inherently compatible with the larger hex size. To ensure a successful conversion, consult the following guide:
| Compatible Models | Non-Compatible Models |
|---|---|
|
|
Axle and Hub Modifications
Converting from a 14mm hex to a 17mm hex requires more than simply replacing the wheel hubs. The axle itself may need to be modified or replaced to accommodate the larger hex size. In some cases, the axle may not be wide enough to support the larger wheel hubs. In these instances, it may be necessary to replace the entire axle assembly to ensure proper fitment and stability. Additionally, some Arrma models may require modification of the wheel hubs themselves to ensure compatibility with the larger hex size.
Driveline Considerations
It is essential to consider the impact of the conversion on the overall driveline of the Arrma vehicle. The larger wheelbase of a 17mm hex setup increases the leverage on the driveline, potentially placing additional stress on the components. If the original driveline is not designed to handle the increased demands, it may be necessary to upgrade or reinforce certain components, such as the driveshafts, to ensure durability and longevity.
Required Tools and Materials for Conversion
Converting Arrma 14mm hexes to 17mm hexes requires specific tools and materials. Ensure you have the following items before starting the conversion:
Essential Tools:
- 17mm hex wrench or socket
- 14mm hex wrench or socket
- Wheel bearing puller
- Torque wrench (optional but recommended)
Replacement Parts:
- 17mm hex hubs (compatible with your Arrma model)
- 17mm wheel bearings (same size as stock)
Optional but Recommended:
- Loctite thread locker (blue or medium strength)
- Lint-free cloth
Materials Table:
| Tool/Material | Quantity |
|---|---|
| 17mm Hex Wrench or Socket | 1 |
| 14mm Hex Wrench or Socket | 1 |
| Wheel Bearing Puller | 1 |
| Torque Wrench | 1 (Optional) |
| 17mm Hex Hubs | 4 (Compatible with Your Arrma Model) |
| 17mm Wheel Bearings | 4 (Same Size as Stock) |
| Loctite Thread Locker | 1 (Optional) |
| Lint-Free Cloth | 1 (Optional) |
Step-by-Step Guide for Hex Adapter Installation
1. Gather necessary tools and materials
a. 17mm hex adapters
b. 14mm hex hubs
c. Hex wrench
d. Locktite (optional)
2. Remove the 14mm hex hubs
Using a hex wrench, carefully remove the 14mm hex hubs from the wheel axles.
3. Clean the wheel axles
Wipe down the wheel axles with a clean cloth to remove any dirt or debris.
4. Install the 17mm hex adapters
Slide the 17mm hex adapters onto the wheel axles and secure them with the hex wrench. If desired, apply a small amount of Locktite to the threads for added security.
5. Test the installation
Once the hex adapters are installed, mount the wheels onto the axles and spin them by hand to ensure there is no binding or excessive play. If necessary, adjust the tightness of the hex adapters until you achieve a snug fit.
| Part Number | Description | Quantity |
|---|---|---|
| ARA310985 | 17mm Hex Adapter – 12mm Hub | 4 |
| ARA310445 | 17mm Hex Adapter – 14mm Hub | 4 |
| ARA310990 | 17mm Hex Adapter – 17mm Hub | 4 |
Axle Removal and Replacement for 17mm Hexes
Replacing the stock 14mm hexes on your Arrma RC vehicle with 17mm hexes is a straightforward process that can enhance its stability and performance. Here’s a step-by-step guide to help you make the conversion:
1. Safety First: Before starting, unplug the battery to prevent accidental power-ups.
2. Remove the Wheels: Use a 12mm wrench to remove the wheel nuts and take off the wheels.
3. Remove the Axle Nuts: Flip the vehicle upside down and locate the axle nuts on the sides of the diffs. Use a 14mm wrench to unscrew them.
4. Slide Out the Axles: Pull the axles out from the diff cases carefully. Be mindful of any shims or spacers that may need to be removed.
5. Install the 17mm Hexes: Take the new 17mm hexes and slide them onto the axles. Ensure they are fully seated and tight.
6. Axle Bearing Maintenance: While the axles are out, it’s an excellent opportunity to inspect and clean the axle bearings. Remove the rubber or plastic dust covers and inspect the bearings for any signs of wear or contamination. Clean them thoroughly with degreaser and apply a small amount of high-temperature bearing grease to keep them running smoothly.
| Bearing Size | Inner Diameter | Outer Diameter | Thickness |
|---|---|---|---|
| Front Axle Bearings | 10mm | 15mm | 4mm |
| Rear Axle Bearings | 12mm | 18mm | 4mm |
7. Reassemble the Axles: Insert the axles back into the diff cases, making sure they are correctly aligned. Reinstall the axle nuts and tighten them with a 14mm wrench.
8. Mount the Wheels Back: Place the wheels back on and secure them with the 12mm wheel nuts.
9. Power Up and Test: Plug the battery back in and test the vehicle to ensure the new 17mm hexes are functioning properly. The wider hex will provide increased stability and allow you to run larger wheels if desired.
Wheel Mounting and Alignment Optimization
To ensure optimal performance and handling, proper wheel mounting and alignment are crucial. Here’s how to achieve perfect alignment and mounting:
Tire Selection and Mounting
Select tires appropriate for your driving style and terrain. Mount them correctly, ensuring the directional arrows (if any) align with the rotation. Use a bead lock or glueless mount system for a secure fit.
Hub Mounting
Install the hub on the axle with the appropriate bearings and spacers. Tighten them securely to prevent play or slippage. Ensure that the hub orientation aligns with the drivetrain direction.
Wheel Attachment
Attach the wheels to the hubs using the included hardware. Use a torque wrench to tighten the nuts or bolts to the specified torque value. This ensures proper engagement and prevents cross-threading.
Camber Angle Adjustment
Camber is the inward or outward angle of the wheels when viewed from the front or rear. Adjust the camber using the turnbuckles or ball joints provided on the suspension system. Positive camber (wheels tilted outward) increases stability, while negative camber (wheels tilted inward) enhances handling.
Toe Angle Adjustment
Toe is the difference in the distance between the front and rear edges of the wheels. Set the toe to zero (equal distances) for straight-line stability. A slight amount of toe-in (wheels closer together at the front) improves handling at low speeds, while toe-out (wheels closer together at the rear) enhances handling at high speeds.
caster Angle Adjustment
Caster is the angle of the steering axis from the vertical when viewed from the side. Adjusting the caster angle affects steering stability and self-centering. A positive caster angle (axis leaning forward) provides more stability, while a negative caster angle (axis leaning backward) improves responsiveness.
Hex Adapter
The main component for converting 14mm hexes to 17mm is a hex adapter. These adapters are typically made of aluminum or steel and fit securely over the existing 14mm hex. Ensure the adapter is the correct size and compatible with your Arrma vehicle.
Wheel Hubs
After installing the hex adapters, you’ll need to replace the original wheel hubs with 17mm compatible ones. These hubs can accommodate the larger hex adapters and allow you to fit 17mm wheels.
Drive Shafts
Depending on your conversion kit, you may also need to replace the drive shafts. Некоторые комплекты включают удлиненные приводные валы, которые компенсируют разницу в длине между 14-миллиметровыми и 17-миллиметровыми колесными гайками. Обязательно проверяйте совместимость и длину приводных валов.
Bearings
The conversion may require new bearings to accommodate the larger 17mm hexes. Эти подшипники должны быть того же размера и типа, что и оригинальные подшипники, но с внутренним диаметром 17 мм.
Hardware
Most conversion kits include необходимый hardware, такой как винты, гайки и шайбы. Убедитесь, что у вас есть правильные размеры и количество крепежа для безопасной установки всех компонентов.
Tools
Для выполнения преобразования вам понадобятся некоторые инструменты, такие как гаечные ключи, отвертки и шестигранные ключи. Убедитесь, что у вас есть необходимые инструменты для разборки и сборки.
Maintenance and Inspection Tips After Conversion
Regular Maintenance
After converting your Arrma 14mm to 17mm hex, it’s essential to maintain the components regularly. Regularly inspect the hex adapters, wheel hubs, drive shafts, bearings, and hardware for any signs of wear or damage. Tighten any loose screws or nuts and replace worn components promptly.
Wheel Alignment
The conversion может повлиять на выравнивание колес. After completing the conversion, check the wheel alignment to ensure the wheels are properly aligned and tracking. This will help prevent uneven tire wear and improve handling.
Drive Shaft Length
If you replaced the drive shafts during the conversion, ensure they are the correct length for your vehicle. Too short or too long drive shafts can bind and cause damage to the driveline components. Double-check the drive shaft length before assembling the final setup.
Bearing Inspection
The 17mm conversion may put additional stress on the bearings. Regularly inspect the bearings for any signs of damage, such as pitting, wear, or discoloration. Replace damaged bearings promptly to prevent further issues.
Hex Adapter Fit
The hex adapters should fit snugly on the original 14mm hexes. Ensure the adapters aren’t loose or wobbly, as this can cause vibration and premature wear. Tighten the adapters securely using the appropriate Allen key or hex driver.
Wheel Hub Compatibility
Verify that the 17mm wheel hubs are adequately compatible with the 17mm hex adapters. The hubs должно надежно прилегать к адаптерам без люфта или шатания. Неправильно подогнанные ступицы могут привести к проблемам с управляемостью и безопасности.
Hardware Inspection
Periodically inspect all hardware installed during the conversion. Check for loose screws, nuts, or bolts. Tighten or replace any loose hardware to maintain the integrity of the converted setup.
Drive Train Maintenance
Pay attention to the drive train components, including the differential, driveshafts, and gear mesh. By performing regular maintenance and inspections, you can extend the life of your converted Arrma vehicle and ensure optimal performance for many sessions to come.
Replacing the Axles
To replace the axles, you’ll need:
- Four 17mm hex axles
- A 5mm Allen key
- Remove the wheels from the car.
- Use the 5mm Allen key to remove the four screws holding each axle in place.
- Pull the axles out of the car.
- Slide the new 17mm hex axles into place.
- Reinstall the screws and tighten them using the 5mm Allen key.
- Reattach the wheels.
Replacing the Wheel Hubs
To replace the wheel hubs, you’ll need:
- Four 17mm hex wheel hubs
- A 5mm Allen key
- Remove the wheels from the car.
- Use the 5mm Allen key to remove the four screws holding each wheel hub in place.
- Pull the wheel hubs off the car.
- Slide the new 17mm hex wheel hubs onto the car.
- Reinstall the screws and tighten them using the 5mm Allen key.
- Reattach the wheels.
Replacing the CVD Shafts
To replace the CVD shafts, you’ll need:
- Four 17mm hex CVD shafts
- Remove the wheels from the car.
- Disconnect the driveshafts from the wheels.
- Pull the CVD shafts out of the car.
- Slide the new 17mm hex CVD shafts into place.
- Reconnect the driveshafts to the wheels.
- Reattach the wheels.
## Troubleshooting Common Issues with Hex Conversion
The wheels are loose or wobbly.
This is most likely due to a loose axle or wheel hub. Try tightening the screws holding the axle or wheel hub in place until the wheels are snug.
The car doesn’t drive straight.
This is most likely due to a bent axle or CVD shaft. Try replacing the bent part with a new one.
The car vibrates when driving.
This is most likely due to an unbalanced wheel or tire. Try rebalancing the wheels or tires until the vibration goes away.
The car makes a clicking noise when driving.
This is most likely due to a damaged CVD shaft. Try replacing the damaged CVD shaft with a new one.
The car doesn’t turn smoothly.
This is most likely due to a damaged steering linkage. Try replacing the damaged steering linkage with a new one.
The car doesn’t accelerate or brake smoothly.
This is most likely due to a damaged driveshaft. Try replacing the damaged driveshaft with a new one.
The car doesn’t climb hills well.
This is most likely due to a lack of power or traction. Try upgrading the motor or transmission, or installing a new set of tires with more grip.
The car handles poorly in wet or slippery conditions.
This is most likely due to a lack of traction. Try installing a new set of tires with more grip, or using a traction compound.
The car is too fast or too slow.
This is most likely due to a mismatch between the motor and gearing. Try upgrading or downgrading the motor or gearing until the car is running at the desired speed.
Enhancing Performance with 17mm Hex Upgrades
Upgrade Complexity: Intermediate
The conversion process involves replacing the existing 14mm hex adapters with 17mm counterparts. This typically requires removing the wheel hubs, axles, and related hardware, followed by installing the new 17mm hex adapters and reassembling the components.
Considerations:
- Wheel Compatibility: Ensure that your wheels are compatible with 17mm hex adapters.
- Hub Compatibility: Verify that the 17mm hex adapters fit securely within the wheel hubs.
- Axle Length: Adapt the length of the axles to accommodate the 17mm hub adapters.
- Bearings: Upgrade bearings to higher quality or shielded bearings for enhanced durability.
- Lock Nuts: Use lock nuts or thread lockers to prevent accidental loosening of the hex adapters.
Benefits of 17mm Hex Upgrades:
- Increased Strength and Durability
- Improved Wheel Retention
- Increased Bearing Capacity
- Enhanced Cornering Performance
- Reduced Unwanted Flex
10. Detailed Summary of the Conversion Process:
1. Remove the wheels by unscrewing the wheel nuts.
2. Remove the wheel hubs by unbolting the hub screws.
3. Unscrew the axle nuts and remove the axles.
4. Install the new 17mm hex adapters onto the axles.
5. Insert the axles back into the differential and secure with axle nuts.
6. Install the wheel hubs onto the hex adapters and secure with hub screws.
7. Mount the wheels onto the hex adapters and secure with wheel nuts.
8. Tighten all fittings securely to prevent looseness.
9. Check wheel alignment and adjust as necessary.
10. Test the upgrade by driving the vehicle and observing the improved performance.
How to Convert Arrma 14mm to 17mm Hex
Converting your Arrma 14mm hex to a 17mm hex is a relatively simple process that can be completed with a few basic tools. By following the steps outlined below, you can quickly and easily upgrade your Arrma vehicle to accept 17mm hex wheels.
Step 1: Gather Your Tools
To convert your Arrma 14mm hex to a 17mm hex, you will need the following tools:
- 17mm hex wrench
- 14mm hex wrench
- Allen key
- Phillips screwdriver
Step 2: Remove the Wheels
Begin by removing the wheels from your Arrma vehicle. Use the 14mm hex wrench to loosen the wheel nuts and remove the wheels.
Step 3: Remove the Hex Hubs
Once the wheels are removed, you will need to remove the hex hubs. Use the Allen key to loosen the screws that hold the hex hubs in place. Once the screws are loose, you can remove the hex hubs.
Step 4: Install the 17mm Hex Hubs
Take the 17mm hex hubs and align them with the axles. Use the screws to secure the 17mm hex hubs in place. Tighten the screws until they are snug.
Step 5: Reinstall the Wheels
Once the 17mm hex hubs are installed, you can reinstall the wheels. Use the 17mm hex wrench to tighten the wheel nuts until they are snug.
Step 6: Check Your Work
Once the wheels are reinstalled, check your work to ensure that everything is tight and secure. Use the 17mm hex wrench to give the wheel nuts one final tightening. Also, check the screws that hold the 17mm hex hubs in place to make sure they are tight.
People Also Ask About
Can I convert my Arrma 14mm hex to a 17mm hex myself?
Yes, you can convert your Arrma 14mm hex to a 17mm hex yourself. The process is relatively simple and can be completed with a few basic tools.
What are the benefits of converting my Arrma 14mm hex to a 17mm hex?
There are several benefits to converting your Arrma 14mm hex to a 17mm hex, including:
- Increased durability
- Improved handling
- Wider range of wheel options
Do I need to purchase any additional parts to convert my Arrma 14mm hex to a 17mm hex?
Yes, you will need to purchase a set of 17mm hex hubs. These hubs are available from most hobby shops or online retailers.
