Do you want to know how to build a sailboat trailer? A boat is intended to move across water, but sometimes we need it to move on firm ground. That's when a couple of wheels come handy.
What you need to build a sailboat trailer is:
- Steel U bars
- Steel flat bars
- Steel tube, 1 1/2" section
- Some rubber, 1/3" thick
- Welder with welding materials
- Welding protective gear
- An axle
- A pair of wheels
The steps to build a sailboat trailer are:
- Weld a rectangular frame big enough to fit around the widest section of the hull. This will be the base of your sailboat trailer. It must be true and square.
- Measure the distance between the widest section of the hull down to the bottom of the bulb. If the sailboat has a swing keel, the depth is going to be smaller, but as the gravitational center is higher, your trailer will have to hold it from a higher spot.
- With the boat hanging from a crane or supported by poles, place the frame at a height between 20 and 25 inches. The lowest part of the hull must remain ten inches higher in reference to the ground.
- Weld the supporting poles using the steel tube at an angle of 20 degrees from the vertical inwards, towards the hull. The end of the bars must be at least five inches away from the hull to allow the insertion of the rubber beds. The quantity of steel tubes will depend on the size and material of the hull. For a bigger boat, a pole every three feet will be enough, whereas for a smaller and lighter dinghy, a pole every five feet is enough.
- Link the poles with a steel flat bar copying the shape of the hull. Again, leave an inch of spare space for the rubber layer.
- Paint the whole trailer with corrosion preventing paint. Any leftovers of paint that you used on your boat, including epoxy, will work. Just make sure that no holes are left for the water to go inside the frame.
- Use glue to fix a layer of rubber to the steel flat bar. The rubber must exceed the thickness of the bar by 1/2 inch on each side.
- Place the axle 20 inches to the back of the balance center of the frame. You can use the back axle of any older car that you can get at your local junk yard for a few dollars. For boats heavier than two tons, the use of more than one axle is recommended.
- Weld the towing hook at the forward end of the frame. The position in the perfect axis spot is vital for the good ride of the boat. Every vibration will be multiplied by the size of the boat, so make sure you weld the towing hook right. A triangle with an attack angle of at most 35 degrees and reaching the sides of the frame will work just fine.
Reinforcement bars and safety features such as lights, secure belts and others can be added as needed. But, remember to comply with your state's regulations in terms of dimensions and other specs if you intend to drive this trailer on the open road.