Attaching Shackle Bolts and Spring Hangers to Utility Trailer  

The torque requirements for leaf spring u-bolts depend on the diameter of the u-bolts that are being used. If the gross weight of your tandem axle trailer is 7,000 lbs, then you likely have two 3,500 lb axles. Typically 1/2 inch diameter u-bolts…

In general shackle bolts turning from use over time does not considerably wear out components. As long as the bolts are greased normally the movement from standard use would not cause them to wear out. The tension of the bolt and nut is loose…

There should be enough free play in the shackles to allow them to move. There is no specific torque rating for shackle bolts. The first thing you should make sure of is that the bolts you use are long enough so that when installed you will have at…

If the shackles aren't angled slightly you run the risk of the equalizers angling and having the shackles on the wrong side of the springs. 28 inch leaf springs are hard to come by so your best solution will be to either go with replacement…

We have leaf spring bolts that were made specifically with features for the leaf spring application like the part #126B2. This is the correct size has a knurled section right below the head of the bolt which helps with install and has a grease…

Before you can pick out a set of leaf springs for your boat you need to find out the weight rating of your trailer axle. Then you will need to purchase leaf springs that are each 1/2 of the axle rating. The #SP-210275 is rated for 1500 pounds so if…

When installing a slipper spring, like the 2-Leaf Slipper Spring #e29SR, you will install it so that the end with the eye is oriented towards the front of the trailer and the open end is facing the rear part of the trailer. You will need to use…

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…

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…

Typically, a wider tire will offer more stability, but with a small, light trailer any advantage provided by the wider tire would be tiny. There are some differences in the two tires you mentioned that could possibally make the tire for your setup.…

Yes, you could convert your Rolco trailer from the wooden bunks to roller bunks. The Boat Trailer Deluxe Roller Bunk, part #DL21741, has a universal mount system that attaches directly to either vertical or horizontal positioned bunk boards that…

Trailer manufacturers don't usually keep a record of parts like these that they install at the factory, so I cannot be sure as to the exact length of the shackle strap that would have come originally on your trailer. With this in mind, a 3-1/8…