So here is what I have come up with so far... this shows the undercarriage and an upclose of one of my axle mounts- 2 more supports will be cut and mounted on the centerline.. I have already re-worked the draw-bar connection...the heavy U shape steel conx will be replaced with aluminum supports. I won't be able to finalize the hitch to bike portion fully until I have the wheels and they are connected. Any thoughts on the axle would be helpful...one long bolt running the width or two running outboard from the centerline? The wheels are 16" w/ 1/2" axle holes.... Thanks in advance.