Parts Needed To Convert Boat Trailer From Rollers To Bunk Boards

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Question:

Hello, I am working on a project converting a roller trailer to a Bunk trailer and I am trying to determine the right parts. It is a 22 ft trailer that will hold a boat that weighs approx 3500 lbs. Can you offer some parts to use. Thank you

asked by: Martin K

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Expert Reply:

Switching from roller bunks to bunk boards on your boat trailer is fairly straightforward. For the most part, you will just be replacing the rollers with the boards. We have the following bunk boards available:

-CE Smith Carpeted Bunk Boards for Boat Trailers - 3' Long # CE27800

-CE Smith Carpeted Bunk Boards for Boat Trailers - 4' Long # CE27810

-CE Smith Carpeted Bunk Boards for Boat Trailers - 5' Long # CE27820

-CE Smith Carpeted Bunk Boards for Boat Trailers - 6' Long # CE27840

-CE Smith Carpeted Bunk Boards for Boat Trailers - 7' Long # CE27845

I'm not entirely sure what your setup is, but I would choose a combination of boards that matches the same length as your current rollers. You will also need brackets # CE10001G-4 and U-bolts # CE15283GA-4 to mount the boards.

expert reply by: Robin H

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Answer 1

The weight of the boat on your trailer should be shared by the keel rollers and the bunks. All of the weight should not be placed on either the rollers or the bunks. It sounds like you have bunks that are just too short for your boat size. I…

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Answer 2

For your boat trailer, the length of bunks is dependent on the boat and the trailer, so I would be hesitant to change anything from the factory. It soulds like you have a couple of 2 foot bunk boards that need to be replaced and you can use the CE…

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Answer 3

In order to find the correct replacement leaf springs for a trailer you first need to start by noting the type whether that be slipper or double eye. Then, you'll need to measure their unloaded length via jacking up the trailer. If the springs…

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Answer 4

Yes, reducing the number of leaves on your leaf springs will lower your ride height and reduce your fender clearance. Lets say for example that the current spring has 9 leaves, and each leaf is 1/4" thick. So the whole spring is 2.25" thick…

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Answer 5

The longest 1-3/4" wide slipper spring we carry is 30" from the center eye hole to end of the flat slipper end. We have springs for 1,800lb #e29SR, 2,900lb #e49SR and 3,700lb #e89SR axles. With your axle diameter being 1-3/4" in…

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Answer 6

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 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

Hey Richard, thanks for reaching out! The Dexter DX7.5 Drop-N-Go Brake Actuator #099-175-00 is a great option for a replacement actuator because it's a direct replacement for the common Model 60 actuators that were popular in the '90s.…

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Answer 9

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 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

Load range B trailer tires are going to have a lower capacity than C load range tires. Basically that, psi rating, and the ply rating are the only differences. A higher load range tire would last a little longer than lower load ranges of the same…

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Answer 12

Hey Kevin, for your Demco DA70 actuator you can use the Reverse Lockout Solenoid for Demco Hydraulic Brake Actuators #DM11993.

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Parts Needed To Convert Boat Trailer From Rollers To Bunk Boards

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