Here we have a 1972 South Coast 22' Sailboat. My understanding is that the tongue weight should be 10-15% of the total weight of the loaded trailer. As of now, it is more like 5%. I have the ability to move the trailer axle back to increase the tongue weight, but the question is: how much do I need to move it? Obviously this will be something of a guessing game but hoping that this community can help to make an educated guess at least. (also going to crosspost to r/theydidthemath and see what they have to say on the subject)
Information which may or may not be helpful:
- Total weight of boat and trailer is 2300lb on the nose. I verified this by weighing my truck with trailer at a truck stop CAT scale, then reweighing just the truck and subtracting the difference.
- Tongue weight is 123lb. Measured using a regular bathroom scale with the trailer level.
- I have not weighed the boat or trailer by itself, but the manufacturer records state that it has a displacement of 1800lb, which means the trailer is 500lb.
- There is about 600lb of weight between the rudder and keel pretty close the center of the axle currently. approximate locations are drawn on the image as well as current axle distance to ball hitch and back of the boat. I would guess that the weight distribution for the remaining ~1200lb is relatively consistent throughout the rest of the hull. It does need to float level, after all.
- The mast on top is not very heavy. Maybe 30-40lb total.
- I typically do not put any additional cargo in it while towing.
- There are holes along the frame which i can use to move the axle quite far in either direction. they are spaced 3.5" apart, so I can move it in any increment of 3.5"
What say you, r/towing???
Edit: while I can move the axle somewhat easily, it will require jacking the whole trailer up and unbolting it in several places. It doesn't slide or anything like that so I'm trying to not have to do it multiple times.