Yes I still have the plans, Ill convert them to pdf incase you don't have autocad. Also I will be using it at the end of August so I'll take a few pics, so you get a better idea.
The axle is rated at 3,500 lbs and I am not aware of any law that states you can't carry a certain amount with just one axle(obviously don't go past the load capacity of axle) and I am in CA which usually has every law in the book.
My car weighs about 1930 and if I remember I calculated the weight of the trailer to be about 875 not including the wheels. So as far as the capacity of the trailer I am fine. My concern was over loading the tires but I got some top of the line Maxxis tires that have a very high weight capacity(thats why they are so big) and I have not had any problems. I have let two people borrow it and they both said is was the smoothest trailer they have towed and I believe that is due to the torsion axle.
