Replacement Leaf Springs and U-Bolt Kit for Small Boat Trailer with Square Axle

Question

Question:

I would like to replace the leaf springs on my boat trailer. it is a light trailer for towing an inflatable boat. The Axle is 1-1/2 square. I would like 2 leaf, double eye springs with 1000 to 1200 lbs capacity. I would also like to replace the mounting hardware. U-bolts are 3/8 x 1-9/16 x 3 1/2 with the appropriate plates. Do you have this stuff? Your web site isnt showing it.

asked by: Thomas D

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Expert Reply:

We definitely have replacement suspension parts for your light boat trailer. Attached is a link to our selection of leaf springs for a 2,000 lb trailer axle. These are 3 and 4 leaf springs and to select the correct one you'll need to measure the distance from the center-eye to center-eye of your current leaf springs when the load is taken off of them.

For a U-Bolt kit it looks like the CE Smith U-Bolt Kit for Mounting 1-1/2" Square Trailer Axles # CE23102 will fit the bill.

Attached is a review video of the U-Bolt kit for you to check out.

expert reply by: Jon G

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Answer 1

The closest spring we have to that is part #e46SR which is a 6,000 pound 1-leaf spring but it measures 25-1/4 inches long. If your 26 inch spring is old and flattened out then there's a good chance part #e46SR is what you need because your old…

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Answer 2

The single leaf #e46SR is designed for use with a mobile home axle, which is intended to be a one-time use item, so I'd wholeheartedly recommend going with the other option, part #e34SR which is designed for use on a trailer that's designed…

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Answer 3

You want to choose the springs based on the weight capacity and fit. Since you are building this, the length of the spring would be open if you have the room. Slipper springs usually have a greater weight capacity but they will tend to ride a little…

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Answer 4

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…

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Answer 5

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 6

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 7

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 8

I have attached for you below some common torque values needed for a trailer suspension system but a lot of these will vary by bolt size and other factors. U-Bolts: Varies by Size - 1/2" bolts: 45 ft/lbs - 70 ft/lbs, 9/16" bolts: 65 ft/lbs…

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Answer 9

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 10

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 11

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

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Answer 12

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

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Replacement Leaf Springs and U-Bolt Kit for Small Boat Trailer with Square Axle

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