This is Vince's Thunderbolt MK II project.  It is absolutely beautiful!

(I'll try to get Vince to post a write on his project)

This photo shows the right knuckle assembly.  This view looks awesome without the seat tube interfering in the  photo.

A front view of Vince's machine

A rear side view

Another rear-side view

A close up of the Knuckle bulkhead

Side View

Bird's eye view

Close up of the main tube assy.