Trailer Ramp Door Spring Assist Adjustment

The door must be open during the adjusting process.

Trailer ramp door spring assist adjustment.

You will find that design assistance here in this article. Plus my spring itself has about 7 full winds on it even with the trailer door closed. Page 1 of 2 trailer ramp door torsion spring winding posted in trailer talk. Single spring 96 2 x 60 lbs.

5 and 6 wide 1 wheel 1 spring. The winding pucks face each other. The mounting bracket has two 3 8 holes that allow the installer to bolt the spring to the rear header. So the spring is under substantial tension at the adjuster collars always.

Sizes range from assists for 5 wide trailers to 8 5 wide trailers. You might also consider taking the trailer to someone who sells them for the adjustment. Trailer ramp springs are heavy duty torsion springs which work as a lift assist to take the majority of weight off of the gate ramp lid. All mounting hardware included except for mounting bolts.

I have a 7 enclosed trailer with rear ramp door that has 2 torsion springs. 8 and 8 5 wide 2 wheel 2 spring. We ship over 35 000 pounds every day and offer a huge variety of material types shapes and fabrication hardware as well as the following processing services. Have two new cables and know how they came off the drums.

Since 1982 all metals supply in oroville ca has provided metal processed metal and industrial hardware to northern california repair shops and industry and manufacturing. Ramp door spring assist overhead. Again be very careful and have a helper with you. The overhead ramp door spring system is designed for enclosed trailers.

The ramp springs that we carry fit 1 1 2 inch diameter hinge pins and are designed for use with heavy duty steel ramps like those on equipment trailers or car haulers. Unit is completely assembled cables sold separately. Press brake bend. Cables are wound on drum and 1 shaft is clamped with vise grips to prevent.

A typical horse trailer or utility trailer ramp uses 3 4 inch hinge pins and would require two ramp springs with a 3 4 inch inner diameter. When starting a new torsional trailer spring design you must know the following parameters. But all trailers are different so this might be an alternative. My trailer door is an easy 500 lbs and as i remember it has 5 turns on the springs.

Initial fabrication of trailer ramp assist spring. 7 wide 2 wheel 1 spring.