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
Bird's eye view
Close up of the main tube assy.