Suspension Hanger Locations for Dual Axle Dump Trailer

Question

Question:

I have a dump trailer that had torshion springs on it and I took them off to put on leaf springs the center to center axles were 35 inch from the factory. I have now two axles I want to put on that are 7000 pound apiece, with 25 inch leaf springs from eye hole to eye hole, they have four plates on each spring. if I put the new axles in the exact place as the old torsion spring axles where do I start putting the brackets at and how far apart measurements? I have 3 inch U brackets from eye hole to bottom, I have the said springs 25inch above. I have the butterfly bracket dont know the true name, that is 7 3/4inch eye hole to eye hole to hold both of the leaf springs, with plate brackets that are 4inch eye hole to eye hole that mount on the butterfly bracket to the leaf spring. I know some of my words are not correct on parts but can you help me on where to put the U brackets on using these parts at axles 35 inch apart? thank you.

asked by: G W

0

Expert Reply:

There are some measurements missing that are important in giving you the exact positioning. I've attached a couple articles to assist with the dimensions you must calculate to get your precise 35 inch on center axles.

Your center hanger will be obviously directly centered between the two axles and then your other two hangers will be spaced identically on each side. Your spring from the center of the outside hanger to spring seat location is the dimension that would be extremely helpful. In the attached photo, that dimension is "C". Once you have that and know that spring seat needs to be at the center of each axle spaced out 35 inches apart, you will be able to determine your hanger location and then also what shackle straps are needed to attach to your equalizer in the center.

I've attached some photos to further assist.

expert reply by: Jason S

0

click to enlarge

Answer 1

In the attached diagram the A measurement is actually the distance from the center of the spring hangers for a single axle trailer. The spring eye to spring eye measurement for your leaf springs will be slightly different. The B measurement that you…

view full answer...

Answer 2

Generally speaking, on a single axle trailer you will want the leaf spring hangers to be spaced apart 1/2" less than the eye to eye measurement of your leaf spring. Therefore, you will want to place the hanger 25-1/2" apart on center when…

view full answer...

Answer 3

The position of the axle should dictate the position of the springs and hangers not the other way around. With that being said, in order to determine proper placement of the hangers you will want to take the the distance between the two eye holes on…

view full answer...

Answer 4

There are a few differences between slipper springs and double-eye leaf springs. Slipper springs normally have a higher weight capacity, and fewer moving parts, but they tend to ride a little rougher than double-eye. You will need to know the length…

view full answer...

Answer 5

Leaf spring hangers come in different heights to provide more or less clearance between the trailer body and the suspension. Manufacturers determine the best spacing for the axles and sizes of the hangers, leaf springs, equalizers, and shackle straps…

view full answer...

Answer 6

We don't carry the MR4 leaf springs but based on my research they look like they are 26 inch double-eye springs like part #e94SR. For springs of this length and the Tandem-Axle Trailer Hanger Kit for Double-Eye Springs #APT4 the hangers are going…

view full answer...

Answer 7

It is possible that hanger kit #APT5 will fit your trailer. But you will need to take the measurements first like you said. When taking the measurements you will want to have the weight off of the trailer by jacking up one side. Depending on the axle…

view full answer...

Answer 8

Since you have a tandem axle set up using double-eye springs #e54SR, the Tandem-Axle Trailer Hanger Kit for Double-Eye Springs #APT5 recommends a distance between the front and center hangers of 29-1/2" and a distance between the center and rear…

view full answer...

Answer 9

The hanger spacing for the #APT4 with 25-1/8" leaf springs is 27-3/4" on center. I have attached a drawing for your reference.

view full answer...

Answer 10

Thank you for including your diagram, but unfortunately some of the information is not legible. In any case if you are replacing existing parts with different ones you will want to mock up the suspension set-up by first just tack welding the hangers.…

view full answer...

Answer 11

We can set you up with all of that. We do offer a 3,500 lb 95" hub face axle #e68GR. The spring seats on this axle are at 80", so we can sell you a few loose spring seats #TRSS238 and you can have them attached at 76". We can also…

view full answer...

Answer 12

Thank you for providing the specs for the suspension components that you already have. Correct hanger spacing really depends on the components being used such as springs, hangers and equalizers. Most of the hanger spacing dimensions that we have are…

view full answer...

Suspension Hanger Locations for Dual Axle Dump Trailer

Product Page this Question was Asked From

Featured Help Information

Miscellaneous Media

Continue Researching