Trailer Couplers, Mounts, Hitches, Locks, Accessories

Trailer Couplers, Mounts, Hitches, Locks & Accessories How-Tos

Boat Hitch Weight - (Video) How to determine the proper trailer hitch weight, presented by Rusty Stainless

Video Transcript

Rusty Stainless here. Today we are going to look at how to get the correct ball weight for towing. We are going to fix an unbalanced trailer. So how do we do it? Well bathroom scale sitting under the jockey wheel. We have the car here so that when we want to start doing some work at the back end, we can hook the trailer to the car and that will steady the whole unit as we adjust the axles at the back.

Currently I have got a ball weight of 22 lbs (10 Kgs). So this combination back here has a weight of around 800 kilos. So I will be wanting to have a ball weight around about 10% of that. So I have got to get this figure up to 80 kilos. I will tell you what pounds that is later when I work it out.

The chassis is separate from the spring and axle assembly. The spring and axle and mud guard sit on this beam here at this angle and the chassis is here. So to balance this trailer all we have to do is push that back and it becomes heavier at the front. If you have got a brake trailer don't forget to unhook the brake cable first because as this guy is back, it could snap your brake cable.

Before we get started we do need to remove the u-bolts that secure this. I did that earlier; I had to use a grinder to cut the bolts, to cut the top of the u-bolt and dropped them away. So the jockey wheel is now up, the trailer is now down on the ball and locked. And I'm now ready to go back on the axle and move it back. And we just have to do it little bit by little bit and see how the weight goes as it builds up.

We start off by marking the current position and that way we can see any progress that we make. I have jacked up the back of the boat and put it on some stands, that way I lift a little bit of the weight off the axle assembly so it makes it easier to slide it back.

To knock it back you will need a FBH. I will let you work out the acronym but this is an FBH and I'm going to start by knocking back this way here. The bigger the hammer you've got the quicker it going to move. So I have to move this axle assemble back 12 1/4 inches to reach my target. So there it is a little over 80 kilos a little over 180 lbs. And the whole thing is sitting clear of the ball there. So very happy I got up to my target weight, but it was a big shift moving it back 12 1/4 inches.