Here's another banjo with an internal tensioning system. The tackhead travel banjo was so successful, I decided to try the concept on a full sized banjo.
Here is a video demonstration and explanantion and another video demonstration done months after the banjo was built. More photos of the banjo are below.
It has a block rim with purple heart, mahogany and maple
The peghead and fretboard are rosewood
The neck is wormy maple (ambrosia)
a calfskin head
I used standard bodhran head tuners for this instrument, but I think I like my homemade ones better