Axle Replacement For a Boat Trailer With 3,500LB Axle With V-Shape For Boat Hull

Question

Question:

I have been searching for a 3500# square, v shaped axle for my boat trailer. The hub face is 85” but spring centers are 71”. All I can find in an 85” hub face is a spring center of 70”. Is there any forgiveness for the spring center measurement?

asked by: Douglas B

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Expert Reply:

We do have the Timbren Heavy-Duty Axle-Less Trailer Suspension # TASR35HDS03 that you will be able to use for your boat trailer as we do not have any axles with the dimensions or design you are needing. These will replace your leaf springs and bolt to the frame. The hub face will be positioned 6-1/4" from the frame which is equivalent to your 85" hub face and 71" spring center. If you have an axle with the 81" hub face and 70" spring center that will work for your boat trailer you can remove the spring seats and have new Seats # TRSS238 welded on.

If you go with the Timbren system above you can pair them with an Idler Hub # 8-213-51UC1-EZ of Brake Drum Hub # AKHD-655-6-EZ-K. For brakes you can use the Electric Trailer Brake Kit # AKEBRK-7-SA or Hydraulic Trailer Brake Kit # AKFBBRK-7-D.

expert reply by: Bud M

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Answer 1

In order to find the correct replacement axle you will need to know the capacity of your current axle, as well as the hub face to hub face measurement. Based on what I found, your 2006 Weekend Warrior SuperLite FS2300 more than likely has two 3,500…

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Answer 2

You can definitely replace the torsion axle on your trailer with a Timbren Axle-Less Trailer Suspension System like the 3,500 pound #ASR3500S04 referenced in your question. Since you will be replacing your axle, the easiest way to install this system…

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Answer 3

From a spec standpoint the Dexter 7k trailer axle part #8327872 is exact same as the etrailer part #e35GR. Most would consider the Dexter axles to be the very top of the line in terms of quality but our etrailer brand is also a really solid option…

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Answer 4

Triple axle trailer scrub tires pretty hard around corners which can put quite a bit of lateral force on the sides of the axle assemblies. The Timbren axles just are not rated to withstand that amount of force in that direction. Installation of a…

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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

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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Answer 8

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 9

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 10

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 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 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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