Making a boat trailer for small boat is a simple and easy building project. Jon boats, and other similar small boats, are popular for their use in duck hunting and fishing. Stable and lightweight, they can be launched easily and can be re-trailered without a launch ramp. Producing your own trailer for such a vessel, as opposed to buying one, can save you some money and be a great weekend project.
Measure the width and length of your boat. Then, add four feet to the boat’s length to get the finished length of your new trailer. Your galvanized tube must be tailored to this length, as it will form the backbone of the trailer.
Cut two pieces of galvanized tubing to the same width as the mounting pads of the axle kit. These pieces will function as crossbeams, to distribute the weight of the boat on the trailer. Mount these tubes on the upside of the backbone tube using galvanized U-straps. Then, put the rear crossbeam about two feet from the rear end of the trailer, and place the front crossbeam approximately two feet in front of the rear one.
Cut two 2 1/2-inch pieces of tubing for the support of the crossbeams. These should be linked parallel to and level with the center beam of the boat trailer. Fix the right and left galvanized tubing in place at both ends, and to the axle mounts in the middle. Use a drill to make the necessary holes to bolt these pieces into place.
Attach these assembled components of the boat trailer to the center beam with two U-bolts on each crossbeam. U-bolts should be placed with threads facing downwards. The two 2×4 studs should now be fixed to the crossbeams using galvanized steel U-brackets. These should be installed in such a way as to be able to swivel slightly, in order to conform to the boat’s bottom. Space the studs so they are found about six inches to the inside of the location where each side of the boat will rest above them. Cover the studs with indoor-outdoor carpet to protect the boat’s finish and to make loading and unloading the boat easier.
Attach hubs to the axles, being certain to pack both the bearings and hubs with grease. Then, attach your wheels and tighten the lugs.
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Attach the hitch securely to the front end of the center beam. Then, install the light kit at the rear end of the trailer, and run the wires through tubes to the front. Mount the winch using a one-foot piece of square tubing at the boat trailer’s front end, and attach a small piece of carpet-covered wood to the front, as a stop. Finally, mount tie-down hooks along the frame in order to properly secure the boat to your boat trailer.