Suspension and Trailer Tire/Wheel Combo Recommendation for Boat Trailer with 3.5K Axle

Question

Question:

Looking for a kit galvanized 3500 lb axle, hub, spring Tire , fender and mounting u bolts etc

asked by: Ron M

0

Expert Reply:

I do have just about everything you are needing. The only thing that we don't currently carry is a galvanized axle rated for 3,500 lbs. If you check with a local trailer garage/store they should be able to help you order one that has a galvanized finish that also have the correct hub-face and spring-center measurements for your application.

A 3,500 lb axle should use inner bearing L68149, outer bearing L44649, and a grease seal that has an inner diameter of 1.719" and an outer diameter of 2.565". If this is the case for your axle then I recommend using the galvanized hub and drum assembly # AKHD-545-35-G-EZ-K and the electric brake kit # AKEBRK-35-SA which is self-adjusting. The Karrier # AM32156 is a great tire that has a galvanized wheel and a max load of 1,870 lbs which is more than enough for a 3,500 lb axle.

Then for a leaf spring you can use part # e57SR with the hanger kit # APS4. I have attached a photo showing where these would install on your trailer frame. The hanger kit to use with this is the CE Smith # CE23002 which has a Zinc plating to combat that rust.

For a fender I recommend going with an aluminum option like part # CE17100ATB because it will have the best corrosion resistance, but I have also linked out selection of fenders that fit with a 14" wheel for you to look through so you can get the style that suits you best.

If your trailer hasn't already been configure for electric brakes and you don't have a brake controller in your tow vehicle just let me know and I can make additional recommendations for you. I have attached a helpful article that explains what is needed for electric brakes that you can check out.

Please note that you will need to disconnect your trailer wiring from your tow vehicle before backing your boat trailer into the water. Electric brakes are becoming more common on boat trailers so it is safe to use, just disconnect the trailer to keep from short-circuiting your wiring.

expert reply by: Jon G

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Answer 1

To determine the correct replacement springs there are a couple of things you will want to look at. First, you will need to know the axle capacity. This information should be on a sticker or plate on the trailer tongue or frame somewhere. If you…

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Answer 2

If your springs are already on top of your axles as it sounds, then you will lose the diameter or your axle plus the spring stack height when you flip the springs to the traditional location under the axle. This will most likely lower your trailer by…

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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

I contacted MORryde and this does happen from time to time as the weight of the trailer can spread out the axles due to downward pressure on the springs/suspension. Odds are the 35" wheel base #MR27ZR will be the correct one for you, but they…

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Answer 5

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 6

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 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

The absolute best cushioned equalizer that fits the dimensions you mentioned having would be the MORryde ALLTREK 4000 part #MR89DR as this is only option to provide vertical and horizontal cushioning. This would make a big difference and you'd be…

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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

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 11

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 12

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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Suspension and Trailer Tire/Wheel Combo Recommendation for Boat Trailer with 3.5K Axle

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