Thank you!

In actuality, loaded with 100+ lbs of goods, the tongue weight should be only about 10 - 15 lbs. The trailer wheels take most of the additional weight.

However, the single wheel type of trailer does put about half of it's load on the bike's rear wheel. That is the main objection I have to the single wheel, due wholly to my own not inconsiderable mass. If i can manage to get back down to my HS weight of 170, that would change the dynamics of the situation.

The only weak point in my design appears to be in the attachment to the rear triangle. When the testing of this prototype is over, in about 6 - 8 months, prototype 3 will most probably have a few design changes in that area. I am seriously considering having a local machine shop make some type of pillow block that will take the place of the weak clamps that I am using now.