I'm back on this project again. The photo shows my engine mounts, made from 1/8'' flat stock and fitted to the bike frame, motor base and cylinder head in a triangle configuration. Holds the engine in securely and strengthens the frame.
Next photos are of the clutch, arm and bracket that gets welded to the seat post behind the motor. A spring attaches to the arm pulling up tensioning the belts while the center mounting bolt hole is slotted allowing the belts to self center. The 3 bolts around the perimeter of the pivot are to secure it to the bracket, and the three set screws are to adjust for tilt when the assembly starts to sag and misalign.
It will become clear when I get all these parts welded on. More photos as I get more done.