I haven't seen this one until now. I must live under a rock. Very nice work there!
I've been tossing around the idea of doing a trike truck. The idea came to me while staring at a ladies Schwinn Del Mar frame that's sitting in my garage. It would be perfect. Having never built or owned a trike, I got to brainstorming about how I will accomplish this. I'm really liking your perspective on the trike truck. Gives me some good ideas.
Now, one question I have (that I may have missed the answer for) was about how you're going to drive the wheels. Is it going to drive one or both? I saw the picture towards the beginning and saw a second shaft with a chain on each side, but how will the two wheels spin at different speed in a turn? Do you have some kind of differential in the works?