Trailer Construction

Pontoon trailers are subject to stress that most boat trailers don’t encounter. Ordinary trailers carry the weight of the boat, no matter how large, primarily over the center of the axles. A couple of strong bunks down the center of the trailer and the largest boat will go down the road safely.

Pontoon trailers carry the weight of the pontoon boat on 72” or 77” centers. The weight of the boat is carried on the outer edges of the trailer frame and the axle. The frame is subject to twisting and flexing that ordinary boat trailers do not encounter. That’s why its important to connect the side rails of the frame in as many places as possible, to strengthen the frame.

 

pontoon trailer construction pontoon trailer construction
   
The regular boat trailer on the right doesn’t need more than two cross member to hold the frame together because there is little stress on the outside frame, all the weight is near the center of the axle. The trailer on the left (NOT OURS) is held together by only two cross members.
 
The picture to the right is of out PT-24T/26T, our most popular models for heavier 22’-25’ pontoons. Five cross members connect the frame horizontally. Two vertical braces in the back help support the weight of large engines. Three vertical braces in the front help prevent “bucking”. This frame is supported by #3500 axles that will take your boat anywhere.

Next time you see a pontoon boat and trailer on the highway, get behind it and see if the frame is twisting. We followed a boat on Hwy. 75 and we thought the trailer was going to twist apart. The owner was pulling it with a big Dodge dually going 70 MPH. It wasn’t one of our trailers.
reinforced pontoon trailer

 

Our 20' pontoon trailers have 4 cross braces,
22'-24' have 5 cross braces and 26'-28' have 6 cross braces and a reinforced front and stern.

Our bunk support brackets attach to the main frame for maximum strength.  Each bracket is fastened to a cross member welded into the main frame and by loosening a U bolt the bunks are adjustable.  Fully welded bunks can be strong when welded to the cross members as in the center image above, but the bunks can not be adjusted and will only fit the pontoon boat the trailer was made for.  Bunk supports bolted to a welded attachment rely on two welds to support the bunk brackets.  When the bracket is adjusted out for 8’6” pontoons all of the weight and pressure of the boat is applied to only two weld points.

For Information Call

(877)294-3395 or (574)294-3386