Are Trailer Leaf Spring Shackles Supposed to be Angled or Totally Straight

Question

Question:

Starting with the equalizer support welded in the same location as the old ones are the shackles supposed to completely vertical or at a angle . Im going to mock it up on the frame then weld it into place. I have my trailer up side down to make it easier. thanks

asked by: George

1

Helpful Expert Reply:

You want leaf spring shackles to be at a slight angle as that prevents the springs from flipping around to the other side of the equalizer over uneven terrain.

I attached a picture that shows what the angle is typically like.

expert reply by: Jameson C

1

click to enlarge

Brandon

8/27/2024

Hello I saw the photo you attached for this question. If I have a single axle trailer are the shackles towards the back of the boat supposed to be angled toward the axle or towards the rear of the trailer?? Thank you

Reply

Jameson C.

8/27/2024

@Brandon The easiest way for me to describe it would if you were looking at a trailer that had the front of the trailer to your left the shackle strap would be closer to the vehicle at the top and further away at the bottom. Or you could say it resembles this \ This allows the leaf spring to extend as it flattens out.

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Answer 1

We do have what you need to replace the UFP HD-1377-10 hub and drum as well as add hydraulic brakes for your boat trailer. Here are the exact parts you will need: - Dexter Trailer Hub and Drum Assembly #84546UC3 - Hydraulic Trailer Brake Kit -…

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Answer 2

In order for your trailer suspension to function properly you will want the angle of the shackle strap to be towards the axle so that as the leaf spring compresses and expands it will have somewhere it can go. Otherwise, you will not get the optimum…

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Answer 3

Ff the springs you are installing are 25-1/4 inches, you would need to place the hangers between 24-3/4 and 25 inches apart. The shackle should be angled as the drawing shows in the attached helpful article, which should be toward the rear of the…

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Answer 4

Thank you for the pictures. The shackles should always be pointing up at about a 45 degree angle towards the axle. There is not a specific angle set in stone, but they should should make a "W" shape at all times. They appear to be…

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Answer 5

You would want the shackle straps of your trailer suspension to be both pointing the same direction. The would need to be pointed up on the straight equalizer part #TREQR83. I attached a picture that shows how the straps should orientate with the…

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Answer 6

The U-bolts of the U-Bolt Kit part #APUBR-9 are Grade 5. The torque specs for 9/16 diameter U-bolts like this is 65-95 ft lbs.

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Answer 7

If the tires are the same size then that matters more than the ply rating, however, we do recommend running the same exact tires on your trailer as that will give you the best performance and most consistent tread wear. For example, you can…

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Answer 8

Having different size tires on your trailer can cause a couple of different issues. The first one being that they have different weight capacities. Your 4.8-12 ranges from 785 lbs at 60 psi to 990 lbs at 90 psi whereas your 5.3-12 ranges from 840 lbs…

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Answer 9

The height of your equalizer is measured from the center of the horizontal mounting holes, to the center of the upper mounting hole as shown as the 2" measurement in the included diagram of the #TREQ104. If you can send me this measurement, and…

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Answer 10

You'd have to go with a brake mounting flange designed for a round axle since we don't have any specifically for square axles. Most likely some modifications will need to be made but since only people with experience installing brake flanges…

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Answer 11

The first thing to do is verify that the the disc brake calipers and wheel bearings will fit your trailer. The majority of 3,500 lb axles use #L68149 inner, #L44649 outer bearings and the #RG06-050 grease seals, but you should check to be sure. Next,…

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Answer 12

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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Are Trailer Leaf Spring Shackles Supposed to be Angled or Totally Straight

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