Enhancing Camper Aerodynamics: Tips For Smooth Sailing On Roads

Improving the aerodynamics of your camper can help you save money on fuel and reduce your carbon footprint. The shape of your camper is the most important factor in determining its aerodynamics, with sharp corners and edges creating more drag. To improve the aerodynamics of your camper, you can add curved pieces of plastic to the exterior, use a wind deflector, install a tow guard, and replace your roof vent with a more streamlined model.

Smooth out edges with plastic sheets

Smooth out the edges of your camper with plastic sheets to improve its aerodynamics and fuel efficiency. The first step is to identify the edges that need to be smoothed out. Look for any sharp corners or edges on the camper's body, especially around the front and back ends, as these areas will have the most impact on airflow.

Once you have identified the target areas, you can start preparing the plastic sheets for installation. Cut the sheets to size, making sure they are slightly larger than the edges you want to cover. It is better to cut them bigger than smaller, as you can always trim them down later. Drill holes in the plastic sheets for screws or bolts, which will be used to attach them to the camper. Make sure the holes are big enough to accommodate the screws or bolts, and consider using washers to distribute the pressure and prevent tearing.

When you are ready to install the plastic sheets, clean the surface of the camper with soap and water, or isopropyl alcohol, to ensure proper adhesion. You may also want to consider applying a primer or adhesive to the back of the plastic sheets for added strength. Carefully line up the holes in the plastic sheets with the corresponding holes on the camper, and secure them in place with screws or bolts. If you are using adhesive, firmly press the sheets in place and allow adequate time for the adhesive to dry.

Finally, use a fine-grit sandpaper to smooth out any rough edges or seams between the plastic sheets and the camper's body. This will help create a seamless finish and further improve the aerodynamics. You can also apply a polish to the plastic sheets for an even smoother surface. Remember to regularly inspect and maintain your installation, as vibrations and weather conditions may cause the plastic sheets to loosen or tear over time.

Reduce sharp corners

To improve the aerodynamics of your camper, it is important to reduce sharp corners. This is because sharp corners create more drag, leading to reduced fuel efficiency. The ideal corner radius is at least 6 inches, which helps to smooth out the airflow and reduce turbulence.

One way to reduce sharp corners is to add fairings or deflectors to the front and sides of the camper. These can be made from lightweight materials such as plastic or fiberglass and should be designed to gradually divert airflow away from the corners. Another option is to use aerodynamic skirting, which can be attached to the underside of the camper to create a more streamlined profile.

In addition to reducing sharp corners, it is also important to streamline the profile of the camper as much as possible. This includes smoothing out any edges or protrusions that can catch the wind, such as awnings, storage boxes, and other external fixtures. It is also important to ensure that the trailer is towed as close to the tow vehicle as possible, as separation between the two can increase drag.

When modifying your camper to reduce sharp corners, it is important to consider the overall frontal area and cross-sectional area. While rounding corners can improve aerodynamics, it is important to strike a balance between reducing drag and maintaining sufficient living space inside the camper.

Overall, reducing sharp corners is a key aspect of improving camper aerodynamics, and it can have a significant impact on fuel efficiency. By making gradual changes to the shape and profile of the camper, you can improve airflow and reduce drag, leading to better fuel economy and a smoother driving experience.

Add a wind deflector

Adding a wind deflector to your camper setup can help to improve aerodynamics and reduce wind resistance, which can lead to better fuel efficiency and a smoother ride. Here are some tips and options to consider when adding a wind deflector:

Types of Wind Deflectors

• Air Dam: An air dam is designed to reduce noise, air, and bugs by preventing air from being trapped between the truck camper and the cab of the truck. It is typically installed between the truck cab and the camper cabover. Some air dams feature slots to reduce pressure variations and minimise bug accumulation.
• Air Diversion: This type of wind deflector helps smooth out the airflow around the camper, particularly if there is a gap between the truck and the camper. It can be fabricated from materials such as fluted polypropylene, which is strong and lightweight.
• Camper Cabover Wind Dam: This type of wind deflector is mounted on the underside of the camper's cabover to reduce wind noise, improve handling, and increase fuel efficiency. It can be made using a combination of a bumper valence and an aluminium L-shaped corner.
• 15-Degree Wind Deflector: This wind deflector is installed at a 15-degree angle between the camper and the truck's roof to eliminate wind, bug, and noise issues.
• AeroShield Wind Deflector: The AeroShield is a commercially available wind deflector designed to reduce wind resistance and improve handling. It can be adjusted to various angles and easily folds down when not in use.

Considerations when adding a wind deflector:

• Customisation: Consider the specific dimensions and requirements of your camper setup when adding a wind deflector. Custom fabrication or adjustments may be necessary to ensure a proper fit.
• Materials: Wind deflectors can be made from various materials, including stainless steel, polypropylene, aluminium, or rubber. Choose a material that is sturdy, lightweight, and suitable for your needs.
• Installation: Some wind deflectors require drilling or modifications to your vehicle, while others can be installed without any permanent changes. Consider your comfort level with making modifications and the ease of installation when choosing a wind deflector.
• Cost: The cost of wind deflectors can vary depending on the materials and complexity of the design. Simple, inexpensive options may be available, while more elaborate designs may require a higher investment.
• Maintenance: Ensure that your chosen wind deflector is easy to maintain and clean. Some deflectors may require periodic cleaning to remove bug residue or other debris.
• Effectiveness: The effectiveness of a wind deflector can vary depending on your specific camper setup and driving conditions. Consider testing the deflector on a typical trip to evaluate its impact on fuel efficiency, wind noise, and handling.

Install a tow guard

Installing a tow guard is an excellent way to protect your towed vehicle from rocks, dust, and debris kicked up by your camper's rear wheels. This setup is especially beneficial if you plan to tow larger vehicles like SUVs, crossovers, or small trucks.

There are two basic types of RV-mounted rock guards: strip style and solid style. Strip-style guards are made of flexible, rubber-like material with vertical slits, forming strips that hang down. These strips allow air and small debris to pass through and can get matted in heavy, wet snow. Solid-style guards, on the other hand, are made of a solid piece of heavy, rubber-like material that blocks all debris and is ideal for colder climates as snow and ice have difficulty forming on this type of flap.

When choosing a tow guard, consider the ease of installation and removal, compatibility with your RV and towed vehicle, and the coverage area to ensure adequate protection. Additionally, look for a sturdy mounting system that can withstand challenging road conditions without shifting or dislodging.

You can also add a second device to the towing assembly, such as a shield, to provide extra protection for the front end of the towed vehicle. This shield deflects debris away from the hood and windshield of the car being towed and should be positioned vertically and fastened securely to the tow bar.

By installing a tow guard and considering additional protective measures, you can effectively safeguard your towed vehicle from cosmetic and mechanical damage caused by road debris.

Use a roof vent cover

The roof vent is an essential component of your camper, providing ventilation and preventing condensation build-up. However, the standard roof vent can create drag, reducing the overall aerodynamics of your vehicle. Here are some ways you can use a roof vent cover to improve the aerodynamics of your camper:

Choose the Right Type of Roof Vent Cover

Select a roof vent cover that is designed to improve airflow and reduce drag. There are various types available, such as standard bonnet vents, raised bonnet air intakes, and NACA (National Advisory Committee for Aeronautics) ducts. Opt for a sleek, low-profile design that seamlessly integrates with the contours of your camper's roof.

Ensure Proper Installation

Improper installation of a roof vent cover can lead to increased drag and reduced aerodynamics. Follow the manufacturer's instructions carefully when installing the cover. Ensure that the cover is securely attached and sealed to prevent air leaks, which can cause turbulence and decrease fuel efficiency.

Maintain and Clean Regularly

Over time, debris, leaves, and dirt can accumulate on and around your roof vent cover, impacting its effectiveness. Regularly clean and maintain the cover to ensure optimal performance. Remove any obstructions and check for signs of wear and tear, replacing the cover if necessary.

Consider Customisation

If you're unable to find a suitable off-the-shelf roof vent cover, consider customising one to fit your specific camper model. This may involve measuring the dimensions of your roof vent and working with a manufacturer or fabricator to create a bespoke cover that seamlessly integrates with your camper's body.

Combine with Other Aerodynamic Solutions

Using a roof vent cover alone may not be enough to significantly improve your camper's aerodynamics. Combine it with other aerodynamic solutions, such as filling gaps between the cab and the camper, installing wind deflectors, or using a trailer with improved aerodynamics. These combined solutions can help you achieve better fuel efficiency and a smoother driving experience.

Frequently asked questions