Fold-Away Hinge Kit and Flexible Brake Line for a Trailer with a 3 x 4 Inch Tongue


I have a 3X4inch tongue on my trailer, that has drum surge brakes. I want to install your Fulton folds away hinge to shorten the tongue about 32. I would like to keep the current surge brake actuator that I have installed. Which flexable brake line do I need and what is the is the highest tongue weight hinge I can get for the 3X4inch hinge?


Expert Reply:

First for a 3 x 4 inch tongue the highest capacity hinge is # FHDPW340300 rated for up to 7,500 pounds gross trailer weight and 750 pounds tongue weight but it is a weld-on application. The bolt-on version, # FHDPB340301, is rated for up to 7,000/700 pounds. The actual capacities are going to depend on the maximum pivot length.

At 32 inches you would be looking at roughly 6,750 pounds gross trailer weight and 675 pounds tongue weight. Please note that you cannot install a hinge on a trailer with an aluminum frame. Aluminum frames cannot take the stress of a hinged tongue.

Given the pivot length you want I would go with a longer flexible brake line, # T0776500, at 18-25/32 inches.

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expert reply by:
Michael H

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