Thanks to Anique for taking the picture with me inside the bicycle. I have modified the experimental frame a little and positioned the wheels a little more inwards. That caused an unexpected problem. The steering is suddenly limited by the front stabilizer. I made a real test drive now.
Disc brakes are just great by the way.
Driving the trike was big fun. I drove it without the streamline this time which had a nasty dissadvantage. I never got so dirty from riding a bicycle before. Last picture is from the new rear fork with some parts still to be welded. I took the bike out again.