Building a custom in-frame toolbox for your car trailer offers a secure and convenient storage solution for tools, equipment, and other essentials. While pre-built options are available, a DIY approach allows for customization to perfectly fit your trailer’s dimensions and specific needs. This article explores a practical example of installing a Kobalt aluminum toolbox on a 19′ car trailer, highlighting key considerations and modifications for a successful installation.
Choosing and Modifying a Toolbox
Selecting the right toolbox involves balancing cost, weight, and dimensions. A Kobalt 73014037 aluminum toolbox (70″ L x 13″ W x 14″ H) provides a lightweight and affordable alternative to heavier fiberglass options. Finding a box with sufficient depth without exceeding the available space between the propane tank cover and trailer shell is crucial. In this case, the Kobalt toolbox offered the best fit, requiring minimal clearance for the lid to open.
Modifications were necessary to accommodate two 6-volt batteries within the toolbox. This involved removing the Kobalt plaque for additional clearance and fabricating custom battery mounts using aluminum straps to distribute the weight evenly.
Building a Secure Mounting System
The toolbox was mounted to the trailer’s tongue frame rails using a robust support structure. Two lengths of 3/16″ x 1.5″ aluminum angle spanned the frame rails, providing a solid base for the toolbox. A third, shorter piece of angle was added directly beneath the batteries for extra support. Rubber seals were installed to cushion the toolbox and prevent movement. The existing bolt holes from the original battery box mounts were utilized to secure the entire assembly to the frame.
Adding Functionality and Protection
To enhance functionality and durability, several additions were made to the toolbox. Hydrogen vents and drain holes were installed to prevent gas buildup and water accumulation. A mud/rock guard protects the front and underside of the toolbox from debris. Interior LED lights provide illumination, and aluminum brackets were added to support a TV and cell phone antenna mast.
Final Touches and Considerations
Small tool shelves on the exterior of the box offer convenient storage for frequently used items. While the front corners of the toolbox might require trimming for improved clearance during tight turns, the current setup allows for sufficient maneuverability. This customized in-frame toolbox provides ample storage for camping gear and tools, keeping the trailer and tow vehicle organized. Future modifications might include angled front corners for increased clearance.
Building an in-frame toolbox for a car trailer allows for personalized storage solutions tailored to specific needs and trailer dimensions. While pre-fabricated toolboxes offer convenience, a DIY approach provides flexibility and customization options. Careful planning, precise measurements, and attention to detail are essential for a successful installation.
