Travel trailer sway, that unnerving sensation of your trailer oscillating behind your tow vehicle, can transform a relaxing road trip into a white-knuckle experience. This article provides proven methods to eliminate sway and ensure safer, more enjoyable travels, based on decades of experience and practical application.
Understanding Travel Trailer Sway
Sway, also known as fishtailing, occurs when the trailer’s center of gravity shifts, causing it to swing from side to side. This can be triggered by various factors, including wind gusts, passing trucks, uneven road surfaces, improper weight distribution, and even emergency maneuvers. Left unaddressed, sway can quickly escalate out of control, leading to jackknifing and potentially catastrophic accidents.
Methods to Eliminate and Control Sway
There are several key strategies to mitigate and eliminate travel trailer sway. The most effective approach involves a combination of these methods, tailored to your specific trailer and towing setup.
1. Proper Weight Distribution
- Equalize the Load: Aim for a balanced weight distribution, with approximately 60% of the cargo weight forward of the trailer axle(s). Avoid overloading the rear of the trailer, as this significantly increases the risk of sway. Use a weight distribution hitch (more on this below) to help redistribute weight evenly across the axles of both the tow vehicle and the trailer.
- Scale Your Setup: Head to a truck scale to accurately measure your trailer’s weight on each axle and your tongue weight. This will provide crucial data for optimizing weight distribution. Make adjustments to your loading until you achieve optimal balance.
- Secure Cargo: Ensure all items inside the trailer are securely fastened to prevent shifting during transit. Loose items can contribute to sudden weight shifts and exacerbate sway. Use tie-downs, straps, and cargo nets to keep everything in place.
2. Invest in a Weight Distribution Hitch (WDH)
A WDH is designed to transfer some of the trailer’s tongue weight from the rear axle of the tow vehicle to the front axle. This helps to level the tow vehicle and trailer, improving handling and reducing sway.
- Spring Bars: Most WDH systems utilize spring bars that connect the trailer to the hitch receiver on the tow vehicle. These bars provide tension, which distributes weight and reduces bounce.
- Chain or Trunnion Style: WDH systems come in two main styles: chain and trunnion. Chain-style hitches are generally less expensive and easier to adjust, while trunnion-style hitches offer more precise weight distribution and are often quieter.
- Proper Adjustment: A WDH is only effective when properly adjusted. Consult the manufacturer’s instructions or a qualified mechanic to ensure the hitch is set up correctly for your specific tow vehicle and trailer combination.
3. Utilize a Sway Control Device
A sway control device is designed to resist the rotational forces that cause sway. These devices work independently of a WDH but are often used in conjunction with one for maximum sway control.
- Friction Sway Control: This type uses friction to dampen sway. It typically consists of a telescoping bar with friction pads that connect the trailer frame to the hitch receiver. As the trailer begins to sway, the friction pads resist the movement, reducing the severity of the oscillation.
- Electronic Sway Control (ESC): Some newer trailers and tow vehicles come equipped with ESC systems. These systems use sensors to detect sway and automatically apply the trailer’s brakes to counteract the movement.
- Dual Cam Sway Control: This system uses cams and rollers to resist sway. It’s often integrated into a WDH and provides superior sway control compared to friction sway control, particularly in challenging conditions.
4. Maintain Proper Tire Pressure
- Consult Your Tires: Tire pressure plays a crucial role in stability. Always inflate your trailer and tow vehicle tires to the recommended pressure listed on the tire sidewall or in the owner’s manual.
- Check Regularly: Tire pressure can fluctuate with temperature, so it’s essential to check tire pressure before each trip and periodically during long journeys.
- Avoid Overinflation or Underinflation: Both overinflation and underinflation can negatively impact handling and increase the risk of sway.
5. Manage Your Speed
- Reduce Speed: Speed is a major factor in sway. Reduce your speed, especially in windy conditions or on uneven roads. Lower speeds provide you with more time to react to potential sway and maintain control.
- Avoid Sudden Maneuvers: Avoid sudden braking or steering maneuvers, as these can upset the trailer’s balance and trigger sway. Gradual corrections are always preferred.
- Drive Defensively: Be aware of your surroundings and anticipate potential hazards. Allow plenty of following distance and be prepared to react to sudden changes in traffic or road conditions.
6. Consider Trailer Upgrades
- Axle Upgrades: If you frequently haul heavy loads, consider upgrading your trailer’s axles to a higher weight capacity. This can improve stability and reduce the risk of sway.
- Suspension Upgrades: Upgrading the suspension system on your trailer can also improve handling and reduce sway. Options include heavier-duty springs, shock absorbers, and air suspension systems.
Frequently Asked Questions (FAQs)
FAQ 1: What is tongue weight, and why is it important?
Tongue weight refers to the amount of weight that the trailer exerts on the hitch of the tow vehicle. It’s typically expressed as a percentage of the trailer’s gross trailer weight (GTW) and should be between 10-15%. Too little tongue weight can lead to excessive sway, while too much can overload the rear axle of the tow vehicle.
FAQ 2: How do I determine my trailer’s tongue weight?
You can determine tongue weight using a tongue weight scale. These scales are relatively inexpensive and easy to use. Alternatively, you can use a bathroom scale and a lever system to estimate tongue weight.
FAQ 3: What are the symptoms of travel trailer sway?
The most common symptom of travel trailer sway is a feeling of the trailer oscillating or fishtailing behind the tow vehicle. You may also experience difficulty maintaining a straight line or notice the tow vehicle being pulled from side to side.
FAQ 4: Can I use a friction sway control device with a weight distribution hitch?
Yes, friction sway control devices are often used in conjunction with weight distribution hitches. The WDH helps to level the tow vehicle and trailer, while the sway control device dampens sway.
FAQ 5: How often should I check my weight distribution hitch?
You should check your weight distribution hitch before each trip to ensure that all components are properly tightened and adjusted. Periodically inspect the hitch for wear and tear and replace any damaged parts.
FAQ 6: What is the best speed to tow a travel trailer?
The best speed to tow a travel trailer depends on various factors, including the trailer’s weight, road conditions, and wind conditions. As a general rule, it’s best to keep your speed below 65 mph, and even slower in adverse conditions. Refer to your trailer’s and tow vehicle’s manuals for specific recommendations.
FAQ 7: Is it possible to completely eliminate sway?
While it may not be possible to completely eliminate sway under all conditions, you can significantly reduce it by following the strategies outlined in this article. Proper weight distribution, a WDH, a sway control device, and careful driving habits are all essential.
FAQ 8: What should I do if my trailer starts to sway?
If your trailer starts to sway, remain calm and avoid overreacting. Gently apply the trailer brakes (if equipped) to help stabilize the trailer. Slowly reduce your speed and gradually steer in the direction of the sway to regain control. Avoid sudden braking or steering maneuvers.
FAQ 9: Can the type of tow vehicle affect sway?
Yes, the type of tow vehicle can significantly affect sway. Larger, heavier tow vehicles are generally more stable and less susceptible to sway than smaller, lighter vehicles. Ensure your tow vehicle is rated to tow your trailer safely.
FAQ 10: Does the length of the trailer affect sway?
Yes, longer trailers are generally more prone to sway than shorter trailers. This is because longer trailers have a greater moment of inertia, making them more resistant to changes in direction.
FAQ 11: Are sway control systems required by law?
In many jurisdictions, there is no specific law requiring sway control systems. However, it is the responsibility of the driver to ensure that the trailer is towed safely. Using a sway control system can help to meet this requirement and reduce the risk of accidents.
FAQ 12: Where can I find qualified professionals to help with trailer sway issues?
You can find qualified professionals at reputable RV dealerships, trailer repair shops, and specialized hitch installers. Look for professionals with experience in weight distribution and sway control systems. They can help you assess your towing setup and recommend the best solutions for your needs.
By implementing these strategies and carefully monitoring your towing setup, you can significantly reduce the risk of travel trailer sway and enjoy safer, more relaxed journeys. Remember to prioritize safety and always drive responsibly.