Building a trailer gate lift assist is a practical and cost-effective solution for anyone struggling with the strain of raising and lowering heavy trailer gates. This project, while requiring some mechanical aptitude and access to basic tools, dramatically improves the usability and safety of your trailer, reducing back strain and making loading and unloading significantly easier.
Understanding the Need for a Trailer Gate Lift Assist
Heavy trailer gates are a common source of frustration and potential injury. The repetitive lifting and lowering, especially with single-handedly operated gates, puts significant stress on the back and shoulders. A well-designed lift assist system counters the gate’s weight, making it almost effortless to operate. This is especially crucial for those who frequently use their trailers for landscaping, hauling equipment, or moving materials. Investing the time and effort in constructing a lift assist can prevent future injuries, increase efficiency, and extend the lifespan of your trailer gate.
Choosing the Right Type of Lift Assist
Before diving into the construction process, it’s essential to determine the most suitable type of lift assist for your specific trailer and needs. The three most common types are spring-assisted lifts, gas spring lifts, and lever-based systems.
- Spring-Assisted Lifts: These use heavy-duty springs to counterbalance the weight of the gate. They’re relatively simple to install and maintain but can be more difficult to adjust for different gate weights. They are a good choice for gates with a fairly consistent load.
- Gas Spring Lifts: Utilizing gas struts, similar to those used in car trunks, these offer smoother and more controlled operation. They are more adjustable than spring lifts, allowing for fine-tuning to match the gate’s weight. The adjustable nature of gas springs makes them popular.
- Lever-Based Systems: These employ a mechanical lever arm to provide leverage, reducing the force required to lift the gate. They are less common due to their complexity and space requirements but can be highly effective for exceptionally heavy gates.
This article will focus on building a gas spring lift assist, as it offers a good balance of simplicity, adjustability, and performance.
Materials and Tools Required
Before starting the project, gather all the necessary materials and tools. This will streamline the construction process and prevent frustrating interruptions.
- Gas Springs: Select gas springs with a force rating appropriate for the weight of your trailer gate. Consult a gas spring force calculator online for accurate sizing. Always err on the side of slightly too strong; you can bleed off pressure, but you can’t add it back in.
- Mounting Brackets: Choose sturdy steel mounting brackets designed for gas springs. Ensure they are compatible with the size and mounting holes of the gas springs.
- Steel Tubing or Angle Iron: This will be used to create the frame and supports for the gas spring mechanism. The thickness will depend on the load and weldability.
- Hardware: Bolts, nuts, washers, and screws of appropriate sizes for securing the mounting brackets and frame components.
- Welding Equipment: A MIG or stick welder is necessary for securely joining the steel components. If you are not comfortable welding, consider having a professional welder assemble the frame for you.
- Drill with Assorted Drill Bits: For creating mounting holes in the trailer and gate.
- Angle Grinder with Cutting and Grinding Discs: For cutting and shaping the steel tubing and angle iron.
- Measuring Tape and Marker: For accurate measurements and marking.
- Safety Glasses, Gloves, and Hearing Protection: Essential for protecting yourself during the construction process.
- Level: To ensure the frame and gate are aligned properly.
- Wrench Set: For tightening bolts and nuts.
Step-by-Step Construction Guide
Follow these steps to construct a gas spring lift assist for your trailer gate:
- Measure and Plan: Accurately measure the length, width, and weight of your trailer gate. Determine the ideal mounting location for the gas springs, considering clearance and ease of access. Draw a detailed sketch of the lift assist system, including dimensions and mounting points.
- Cut and Prepare the Steel: Using the angle grinder with a cutting disc, cut the steel tubing or angle iron to the required lengths based on your sketch. Deburr the cut edges with a grinding disc.
- Weld the Frame: Assemble the steel components to create a sturdy frame for the gas springs. Ensure the frame is square and properly aligned before welding. Use a level to verify its accuracy.
- Attach Mounting Brackets: Weld the mounting brackets to the frame at the designated locations. Ensure the brackets are securely attached and properly aligned with the gas spring mounting points.
- Install the Frame on the Trailer: Position the frame on the trailer and securely attach it using bolts, nuts, and washers. Drill pilot holes if necessary.
- Attach the Gas Springs: Connect the gas springs to the mounting brackets on the frame and the trailer gate. Ensure the gas springs are properly oriented and securely fastened.
- Test and Adjust: Slowly raise and lower the trailer gate to test the lift assist system. Adjust the gas spring mounting points or bleed off pressure from the gas springs if necessary to achieve smooth and balanced operation. Always follow the gas spring manufacturer’s safety guidelines when bleeding off pressure.
- Final Touches: Apply a coat of paint to the steel frame to protect it from rust and corrosion. Inspect all connections and fasteners to ensure they are secure.
Safety Precautions
- Always wear safety glasses, gloves, and hearing protection when working with power tools and welding equipment.
- Disconnect the trailer from the tow vehicle before starting any work on the gate or lift assist system.
- Work in a well-ventilated area when welding to avoid inhaling harmful fumes.
- Use appropriate lifting techniques when handling heavy materials.
- Consult with a qualified professional if you are unsure about any aspect of the construction process.
- Never overload your trailer.
Frequently Asked Questions (FAQs)
FAQ 1: How do I determine the correct gas spring force rating for my trailer gate?
The gas spring force rating should be determined by the weight of your trailer gate. There are several online calculators that you can find by searching for “gas spring force calculator”. These calculators typically require you to input the gate’s weight, the distance from the hinge to the gas spring mounting point on the gate, and the angle of the gate when closed. It’s always best to err on the side of a slightly higher force rating, as you can always bleed off some pressure if needed.
FAQ 2: Can I use automotive gas springs for my trailer gate lift assist?
While automotive gas springs might seem like a cost-effective option, they are generally not recommended for trailer gate lift assists. Automotive gas springs are designed for specific applications and may not be suitable for the constant stresses and environmental conditions of a trailer gate. Invest in gas springs specifically designed for lift assist applications.
FAQ 3: What type of welding process is best for this project?
MIG welding is generally considered the best welding process for this project due to its ease of use, speed, and clean welds. However, stick welding can also be used, especially if you have experience with that method. Just ensure that the welds are strong and durable. A competent welder with either process will result in a quality build.
FAQ 4: How can I prevent rust and corrosion on the steel components?
To prevent rust and corrosion, thoroughly clean the steel components before painting. Apply a rust-inhibiting primer followed by a topcoat of durable exterior paint. Regular maintenance, such as cleaning and touch-up painting, will further extend the lifespan of the lift assist system.
FAQ 5: Can I install a lift assist on a trailer gate with a mesh or expanded metal surface?
Yes, you can install a lift assist on a trailer gate with a mesh or expanded metal surface. However, you may need to reinforce the gate frame to provide a solid mounting point for the gas springs. Consider adding a steel plate or angle iron to the inside of the gate frame at the mounting location.
FAQ 6: How often should I lubricate the gas spring pivot points?
Lubricating the gas spring pivot points every few months will help to ensure smooth operation and prevent premature wear. Use a silicone-based lubricant to avoid attracting dirt and grime.
FAQ 7: What do I do if the gas spring is too strong and the gate pops open too forcefully?
If the gas spring is too strong, you can carefully bleed off some of the pressure. Most gas springs have a Schrader valve (similar to a tire valve) that allows you to release pressure. Release small amounts of pressure at a time and test the gate’s movement until you achieve the desired balance. Always wear safety glasses and follow the manufacturer’s instructions.
FAQ 8: How do I know if my gas spring is failing or needs replacement?
Signs of a failing gas spring include reduced lifting force, jerky or uneven movement, and leaking fluid. If you notice any of these symptoms, it’s time to replace the gas spring.
FAQ 9: Can I install a lift assist on a trailer gate that already has a latching mechanism?
Yes, you can install a lift assist on a trailer gate that already has a latching mechanism. Ensure the lift assist system does not interfere with the operation of the latch and that the latch is still secure when the gate is in the closed position. You might need to make minor adjustments to the latch mechanism to accommodate the lift assist.
FAQ 10: What’s the best way to ensure the mounting brackets are securely attached?
The best way to ensure the mounting brackets are securely attached is to use high-quality hardware and proper welding techniques. Use bolts, nuts, and washers that are rated for the intended load. If welding, ensure the welds are strong, consistent, and free from defects. Consider having a professional welder inspect your work for added assurance.
FAQ 11: Can I use multiple gas springs on a very heavy trailer gate?
Yes, for exceptionally heavy trailer gates, using multiple gas springs can provide the necessary lifting force. Ensure that the gas springs are evenly distributed and properly sized to handle the gate’s weight.
FAQ 12: What are the legal considerations when modifying a trailer with a lift assist?
It is crucial to ensure that any modifications to your trailer, including the installation of a lift assist, comply with all applicable local, state, and federal regulations. This may include weight restrictions, safety standards, and lighting requirements. Consult with your local Department of Motor Vehicles or a qualified trailer mechanic to ensure compliance. Ignoring these regulations can lead to fines or legal liability.