Why Correctly Fitting Gas Struts Matters
Fitting gas struts correctly is crucial for ensuring their longevity and optimal performance. When installed improperly, they can bind, fail to extend fully, or even cause damage to the mounting points. This mechanism is critical for providing controlled lifting and soft closing for various applications, from vehicle tailgates and hoods to marine hatches and toolboxes.
- Proper fit ensures smooth, controlled motion.
- Avoids premature wear and mechanical failure.
- Prevents damage to mounting surfaces.
- Guarantees reliable support and operation.
- Enhances user safety and convenience.
Understanding the core principles behind gas strut mechanics is fundamental. These devices use compressed gas, typically nitrogen, sealed within a cylinder with a piston rod. As the rod retracts, gas is forced through a controlled orifice, creating resistance that allows for gradual extension or compression. The force, measured in Newtons (N), dictates how much weight the strut can support or lift.
The primary consideration involves matching the strut's force and stroke length to the weight and movement required for the specific application. For instance, fitting a gas strut for a 1967 C10 tailgate demands precise force calculation to avoid excessive strain on the hinges. Similarly, gas strut windows on an RV need careful installation to ensure they open smoothly and stay securely in place, unaffected by external forces.
Such precision is paramount for both safety and functionality.
Key Terminology Explained
Before you begin fitting gas struts, familiarize yourself with these terms:
- Force (N): The lifting or pushing power of the strut.
- Stroke (mm/in): The distance the piston rod can extend or retract.
- Extended Length: The total length of the strut when fully extended.
- Compressed Length: The total length of the strut when fully compressed.
- Mounting Points: The locations on the lid/door and frame where the strut attaches.
Misunderstanding these can lead to selecting the wrong strut or improper placement during installation.
Essential Steps for Fitting Gas Struts
When you're ready to install, follow these steps methodically to ensure a successful fitting of gas struts. Each step builds upon the last, creating a reliable system.
Step 1: Measure and Prepare
Before purchasing, accurately measure the required stroke length and determine the weight of the object to be lifted. Measure the available space for the strut in both its extended and compressed states. For items like a mini 14 accu strut used in specialized equipment, these measurements are critical. Always use a scale to weigh the lid or door accurately rather than guessing.
Step 2: Mark Mounting Points
This is where strategic placement significantly impacts performance. With the lid or door held in the desired open position, temporarily attach the strut with its ends loosely secured. Mark the exact center of the mounting eyelets on both the lid/door and the frame. This ensures the strut operates on a straight line during its full range of motion. For applications like garage door reinforcement strut systems, specific bracket placement is often dictated by the existing structure.
The most common mistake is overlooking the geometry of the pivot points.
Step 3: Secure Attachments
Drill pilot holes at your marked points and attach the strut's end fittings using appropriate hardware. Ensure all bolts are tightened securely, but avoid overtightening, which could strip threads or crack the mounting surface. For added security, especially with heavy loads, consider using a strut angle bracket or specialized strut beam clamps if the material requires it.
When working with metal, always deburr drilled holes to prevent sharp edges from damaging the strut's rod or seals.
Step 4: Test Operation
Slowly open and close the lid/door, observing the strut's action. It should extend and retract smoothly without binding. If there's resistance, re-evaluate the mounting point alignment. Minor adjustments might be necessary. If you're installing Lesjöfors gas struts rear specifications on a vehicle, test the full range of motion to confirm they operate as intended.
Step 5: Final Checks and Reinforcement (If Needed)
Ensure all fasteners are tight. For applications experiencing significant stress, like a full strut turkey mount, check that the mounting points can withstand the applied forces. If the original material is weak, consider reinforcing the area before final installation.
Troubleshooting Common Gas Strut Installation Issues
Even with careful planning, you might encounter issues when fitting gas struts. Recognizing these common problems and their solutions can save you time and frustration.
Issue: Strut Won't Extend Fully or Is Sluggish
This often stems from misaligned mounting points or an incorrect force calculation. The strut might be binding against the opening edge, or the force is insufficient for the weight. Check the geometry first; ensure the strut rod is moving in a straight line. If alignment is correct, the strut may be undersized. For universal strut clamps, ensure they are not obstructing movement.
Issue: Lid/Door Slams Shut or Won't Stay Open
A strut that slams shut usually means the force is too high for the weight, or the mounting points are too close together, creating too much leverage. If the door won't stay open, the strut's force is insufficient, or it's faulty. Double-check your weight measurements and force calculations. Sometimes, the problem is a faulty strut that needs replacement.
Always test the strut's 'hold' capability by carefully letting the lid rest on it before fully securing the final mounting point.
Issue: Damage to Mounting Points
This is a direct result of excessive force or improper hardware. If the material is thin, like certain plastics or thin sheet metal, it can crack or tear. Using larger washers or backing plates can distribute the load more effectively. For applications requiring robustness, like modifying an industrial enclosure, assess the substrate's strength carefully.
Addressing these potential problems proactively during the fitting process leads to a more secure and reliable installation.