Recommended Replacement for Duraflex 3,500 Pound Axle

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Question:

I have a Duraflex 3500# single axle boat trailer I need to replace. What info do you need to replace?

asked by: Howard

0

Expert Reply:

In order to find a typical replacement axle we would be looking for the overall length. That is, the hub face to hub face measurement. The axle you looked at has the same 3,500 lb capacity and measures 89" from hub face to hub face. This uses a leaf spring suspension, and from what I have found the Dura-Flex axle you have is some kind of torsion axle. Unfortunately we do not carry any torsion axles to replace your current axle.

We do, however, have one possible solution. The Timbren Axle-Less Trailer Suspension System # ASR3500S05 will fit any frame width. This system uses 2 separate units to replace your existing axle. It can be bolted or welded on, and has a weight capacity of 3,500 lbs. You would need to check to see if it would fit your existing hubs. It uses a # L68149 inner and # L44649 outer bearing, # L68111 inner and # L44610 outer race, and # 58846 (10-19) grease seal. There is also an option that comes with hubs # A35RS545 and electric brake hubs # A35RS545E that has a 5 on 4-1/2 bolt pattern.

I have attached a review of the Timbren system for your reference.

expert reply by: Robin H

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Answer 1

I do have a few ways for you to lower a camper but it will largely be dependent on what type of suspension you have, leaf springs or torsion. If you have leaf springs and they are positioned above the axle tube, you can flip them with the Dexter…

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Answer 2

To allow for full articulation so you don't have to worry about the tires bottoming out int he wheel wells, I'd recommend going with a 15° down torsion axle. If the original axle was a 0°, this would raise the…

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Answer 3

The most important factor when selecting an axle is the weight capacity you need. You want to ensure your completed trailer's fully loaded weight is less than the axle capacity, or that it at least matches. Axles of a given weight rating will…

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Answer 4

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 5

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 6

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 7

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 8

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 9

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 10

Increasing the tire and wheel size can increase the height of the trailer but it's usually quite minimal. Before you do anything else you should see if the pin box can be adjusted. Although you have to be careful here since This will lower the…

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Answer 11

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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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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Recommended Replacement for Duraflex 3,500 Pound Axle

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