I'm not sure I was clear enough. I didn't mean to suggest that the wheels should all be mounted on the same axle somehow, I just meant that they could be in the same plane. So, you'd still have three wheels in line with each other on each side, but all on the same level so that your trike frame sits flat.
Why could you not mount the axles in line with each other? It's a cool project, and I'm not trying to hate really, but the main axle being mounted above the wheels like that just makes it look kind of goofy. Lol
I like the idea about planting on the west side of your house. Passive cooling like that is awesome, and I hope to incorporate that type of design in my home someday.
I can't tell if you're serious or not :|