His design relies on balancing like a bike. This is easy on an upright design but vastly harder on a laid back low down one. I built one on a different principle of being able to move the trike against a non-tilting part.
Firstly my apologies for my prolonged absence. A combination of other hobbies and medical issues. I note the new forum and I note the pictures in my old thread had died (probably were on photobox) so I've re-upped them here though probably not in chronological order.