Manufacturers, brands, skins, maintenance, stands, sticks, michrophones and other accessories for congueros can be discussed into this forum ...... leave your experience or express your doubts!
Looks like the person or maker used two crowns on one drum with a turnbuckle like part in the center. Very interesting. I am wondering if you can see any signs of wear of scraping along the lower crown? That would be one of my main concerns with those drums. The bongos however look like they have no such issues.
I just noticed from the first picture that if you do not tune these perfectly balanced that you will have that bottom crown shift on you and possibly cause damage to the shell. It's a nice idea, but definitely not practical like the bongos.