Nope. Standard construction. I am curious how they held it together for brazing (it is back together, so too much wondering will make me have to take it apart again). In both the top and down tubes, there are two large blobs on either side of the tube (right and left, not top and bottom), Almost seems like they pinned it from the inside with 16d nails. This bike really makes me think I could build frames for a living.