How to Choose Correct Leaf Spring Length for 1958 Spartan Trailer

Question:

I have a 58 Spartan trialer and the leaf spring is 20 3/4 CTC and 2in wide how or where might I find one if yall dont happen to have any? And if I can get one that is 21in long CTC will that work or be too much.

asked by: Brady C

Expert Reply:

When choosing a replacement leaf spring for your trailer suspension you will want to choose a leaf spring that is compatible with your hangers (double-eye or slipper spring) and that has the proper axle weight capacity rating.

Because leaf springs tend to flatten out as they get older and more worn out (making them longer), you're going to find that your measurements aren't the exact length of springs you'll use; it's most important to get close to the length while using the correct axle capacity and mounting style of the springs. The capacity is typically listed on the axle itself or up on the same plate that has the VIN number.

The two leaf springs I have that are closest to your measurement of 20-3/4" is the 3-Leaf Double-Eye Spring for 2,000-lb Trailer Axles - 20-3/8" Long # e84SR. This spring is a double-eye leaf spring and measures 20-3/8" CTC. It is rated to work on a 2,000-lb axle. The spring width is 1-3/4" with an eye diameter of 9/16".

The other spring is the Dexter Axle Double Eye Leaf Spring for 2,000-lb Trailer Axles - 21" Long # 072-017-00. This spring is a double-eye leaf spring and measures 21" CTC. It is rated for 2,000-lb axles. The spring width is 1-3/4" with an eye diameter of 9/16".

When replacing springs it is recommended to replace them in pairs for proper axle alignment and to avoid performance issues.

I am including a link to a helpful article on Double-Eye Trailer Suspension Systems.