Slider in wa, love the shot of the trike your building, its simular to the frame I have in storage. Where did you get the center gear drive casing from? My first trike I used one from HD I found in a pick a part bike yard. This one on my trike in storage is machined from aluminum and I got the specs from a guy I knew from across the pond. That one looks peachy, a bit of paint and some cool rims and those would be great! If you ever decide to do a custom scooter and need some painting help or sheetmetal services for a vet let me know, be glad to donate what I can.