Timbren Axle-Less Suspension Upgrade For A 4x6 Off-Road Trailer

Question

Question:

Hello, I need help in piecing together the suspension components. I am in the process of converting my leaf spring 4x6 trailer to the Tembren axle-less setup. I believe the ASR1THDS03 are what I need? As I need something that can handle the extreme off-road conditions along with the added lift. I plan on getting a set of hubs with matching 6x5.5 bolt pattern as my 07 FJ Cruiser, but which one? I also need for the axle-lesss and hubs to be able to support 17inch wheels and 33inch off-road mud terrain tires. Please advise. Thank you.

asked by: Fugi

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Expert Reply:

When choosing your axle-less solution components, you want to match up a few things, including your wheel size and the set of bearings used in the hub. The bearings in the hubs have to match in order for them to fit on your spindles. You also need to match the wheel bolt pattern and the hub weight capacity.

The Timbren Axle-Less Trailer Suspension System # ASR1THDS03 referenced uses L68149 inner, L44649 outer so we need a hub and drum set that matches. The only hub and drum set we have for 17" wheels with 6 on 5-1/2 bolt pattern is the Dexter Trailer Idler Hub Assembly for 6,000-lb Axles # 42655UC1. It has the inner bearing 25580 (1.75" inner diameter) Outer bearing: 15123 (1.25" inner diameter) so they are not a match.

A better solution I recommend is the Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Lift Spindle - Off-Road Tires - 3,500 lbs # ASR35HDS02 which we've seen used for similar off-road applications. These will work with the Dexter Trailer Hub and Drum Assembly # 8-201-9UC3-EZ bearing sizes.

Included are video resources with more information on these parts.

expert reply by: Patrick R

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Answer 1

As you mentioned, you will need to match the number of bolt holes in addition to their spacing in order to fit a wheel to a trailer hub. This is known as the bolt pattern and you can use the attached help article to help you find which pattern you…

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Answer 2

The Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Lift Spindle - Off-Road Tires - 3,500 lbs #ASR35HDS02 is a great product made by Timbren. It is a universal fit product that uses aeon rubber springs as shock absorber suspension. This…

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Answer 3

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 4

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 5

A BT8 spindle would have a diameter of .99 of an inch where the bearings would both install and would have a diameter of 1.24 where the great seal would ride. That would require a hub part #AKIHUB-440-2-1K for an idler hub. A BTR spindle would have…

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Answer 6

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 7

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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Answer 8

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 9

Thanks for the information on your trailer. For your axle with brakes I recommend the Trailer Hub and Drum Assembly - 5,200-lb and 6,000-lb E-Z Lube Axles - 12" - 6 on 5-1/2 #AKHD-655-6-EZ-K if you have the spindles with the integrated grease…

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Answer 10

To determine if there are compatible hubs and associated bearings to replace your current hubs to a more standard size you will have to take several precise measurements on the spindle of your axle. It is recommended to use a set of dial calipers to…

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Answer 11

The BTR and BT8 denotations refer to the spindle, not the trailer hub. The difference between a BTR and BT8 spindle is that the BTR spindle uses a 1.063" diameter L44649 bearing and the BT8 spindle uses a 0.99" diameter L44643 bearing. In…

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Answer 12

Depending on how the trailer was made, there will be a few spots you can check to identify the axle. First, if the trailer was pre-made by a specific company, you may be able to find this information in either the paperwork or on a placard somewhere…

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