Per usual, I have no useful information.
I think that your picture is a much better wheelchair rig than the
botched attempt in the other thread. It is better thought out. This strikes me as one of those projects that sounds easier than it is. A trailer set up (like the poor example) sounds good but becomes unworkable quickly because you have to have a high ramp that folds and can be worked by the driver and you have to keep the chair locked into place and...and...and...
Most bikes I've seen set up for wheel chairs use the side car driver approach. I have seen several that look similar to that design. A guy in town rode a Yamaha that we set up like that. He had found the instructions on the internet.
Anything to keep on riding.
That is a nice example.
I like the front loading trunk on the side car chariot. I like the windscreen too. It looks well thought out.
I still think that everyone should watch
the seeker because it is a well made movie about a guy riding a motorcycle no matter what. It is an enjoyable documentary.The main guy in that movie also found the directions online if I remember correctly.