Trailer Spring Selection for a 1974 Two Horse WW Horse Trailer

Expert Reply:

To determine the proper leaf springs to purchase we will need to get some measurements and a few other details. First we will need to know if your trailer has double eye springs or slipper springs, next we need to know how many axles the trailer has and the weight capacity of your trailers axle or axles. Measurements needed are the distance from the center of one eye to the center of the other eye on the double eye leaf spring and from the center of the eye to the highest point on the slipper spring style. Finally the number of leaves on your original set of springs will be helpful also.

Springs tend to stretch out with wear so if you have a trailer with a single 3500 pound axle and double eye springs that measure 23-1/4 inches on center, or within an inch of that, and 3 leaves then you would most likely need two of the Trailer Leaf Springs, 1750 lbs. 3 Leaf, item # 1724. If your measurement is more like 25-1/4 inches or longer and you have 4 leaves then you will need two of the Trailer Leaf Springs, 1750 lbs. 4 Leaf, item # PR4B.

Our Trailer Suspension System Review pages (see links) have some valuable information about selection of leaf springs and related components for your trailer.

expert reply by: Bob G