I've been working on a design in Design Workshop Lite (A Macintosh CAD application) for a custom built electric bike.
The entire bike will be custom made, custom fabricated and built.
The hardware store will be where I will get the tubing for the frame. I haven't decided on a specific electric motor yet. I will be using a standard sized bike tires for the tires. (27 inch or a little smaller)
Other than that and the motor everything will be custom made.