Why Fulton Fold-Away Coupler Hinge Kit NOT Recommended for Aluminum Trailer Frames

Question:

why does the fulton fold away coupler not work on an Aluminum trailer?

asked by: James C

Expert Reply:

I spoke with my contact in the Tech Services department at Fulton, who explained that Aluminum trailer frames have a greater wall thickness than a steel frame. The bolts that attach the hinge to the trailer frame have a large diameter shoulder which acts like a rivet, holding the parts together very tightly. Since an aluminum trailer frame has a greater wall thickness, the shoulder won't have contact all the way through the metal, resulting in a looser fit.

This is why they don't recommend using the hinge kit on aluminum trailer frames.

expert reply by: Mike L

Randy T.

7/28/2020

A little clarification is probably in order. Instead of saying aluminum frame, maybe say aluminum coupler tube? My McClain trailer is aluminum, but the 3x3 coupler tube is galvanized steel. I had zero fit issues with the Fulton kit, and neither have several of my friends.

Jon G.

8/6/2020

I reached out to my contact at Fulton and he said that you are correct about the coupler being steel vs aluminum.

Mike C.

6/14/2021

@JonG I believe the tongue is on my trailer is 2x3 aluminum. Would it be possible to replace the supplied hinge mount bolts with bolts with a longer shoulder to accommodate the additional thickness of the aluminum.? Otherwise is there a hinge to fit an aluminum tongue? Thanks.

Jon G.

6/22/2021

@MikeC You could maybe try if you'd like, but when we have reached out to Fulton in the past that isn't a solution that is offered. I would just stick with what Fulton has said about this to be honest.