26 Inch Long Double-Eye Leaf Spring With at Least 3 Leaves For 3,200 lb Tandem Axle Trailer

Question

Question:

Wanting to upgrade tandem axle boat trailer leaf springs from single spring to at least a 3 spring. Trailer label says GVWR 3206 lbs. Current springs are single spring, double eye,1.75 wide and 26 eye to eye as sitting in garage, still on trailer. Springs are 5/8 thick at center. U bolts are 5 long and axle is 2 3/8 diameter. What leaf spring kit would work for this application. Thank you,

asked by: Wes S

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Expert Reply:

Hey Wes, thanks so much for all that info it extremely helpful, and we do have leaf springs for you. For your 3,200 lb tandem axle trailer there is a leaf spring with the right capacity that also measures 26 inches long eye to eye and has four leaves; the leaf spring you can use is the following:

- 4-Leaf Double-Eye Spring # e77SR

The # e77SR is rated for 1,000 lbs (so 4,000 lbs total for your tandem axle trailer) and is 1-3/4 inches wide. Each leaf is 1/4 inch thick so the spring is 1 inch tick in the center, just under double the thickness of your current leaf spring.

expert reply by: Kyle S

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Answer 1

If a leaf spring is 26 inches long when worn out and flat you most likely are in need of new springs that are the very common size of 25-1/8 or 25-1/4 inch. I don't know what axle capacity your trailer has but I attached links to a page that has…

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Answer 2

To correctly measure a leaf spring, you'll want to jack the trailer up on jack stands so the axle is hanging freely, then measure directly across from the center of one spring eye to the other, as shown in the provided diagram. The height of the…

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Answer 3

Well shackle length is mainly based on the height difference between the front and rear hangers. The rear hanger normally doesn't hang as low as the front so that the shackle can offset the difference and add the ability to move. What is the…

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Answer 4

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…

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Answer 5

For a single axle trailer, you want the shackle strap to be able to move so that you have the spring deflection needed for your suspension. Angled like the photo or even almost vertical is fine you just don't want the shackle strap to bind and…

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Answer 6

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 7

Hey Patrick, so for your leaf spring upgrade I am going to need to know a couple of things before I can get you over to the right part. Specifically, the length from eye to eye, the spring width, leaf thickness, and the number of leaves. From here I…

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Answer 8

Yes, going from a 4 leaf to a 6 leaf spring would add slightly to your ride height. For example, if the current 4 leaf spring has 3/8" thick leaves, and you go to a 6 leaf spring with 3/8" thick leaves, you would be adding 3/4" of…

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Answer 9

To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that…

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Answer 10

When replacing shackle straps they should be the same length as the ones that were previously on your tandem axle trailer; replacing them with longer straps will result in additional play in your trailer suspension which could lead to additional wear…

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Answer 11

The spring hanger placement is going to be determined by your axle spacing. For example, if your axles are spaced 33 inches apart, as shown in the attached diagram, a 7K axle slipper spring, like #e74SR, requires a distance of 28-1/2 inches between…

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Answer 12

I attached a picture that shows the proper position of shackles and equalizers on trailer suspension. Sometimes the shackle will flip up but if you jack up the trailer by the axle that's got the shackle flipped you can usually get it to flip back…

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26 Inch Long Double-Eye Leaf Spring With at Least 3 Leaves For 3,200 lb Tandem Axle Trailer

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