The frame and seat have worked well. Aluminum frame has no marks of corrosion. My English comes from the dictionary. Short hills can be driven with speed, so that it is not necessary to strain. The trike can be stored and maintained in vertical postition.
All wheels go around freely and claening is easy.
The durability of the frame must still be under control, because I did not have any construction calculations and no heat treatment. Lock pedals will allso be a good thing. The stability of the trike is good enough for lock pedals. I have tried to plan a new frame that will be more simple and thus cheaper. There is more room on the trunk.