Looks great! I see he chose a straightforward single pivot. Whats the idea behind this one? Pivot is much farther back than say your Orange or a Cannondale. Small bump sensitivity?
Holy H!! I bet that Cannondale made the Tange look like tank plating!
I can't hope to be as thorough as mattr, so I will save my energy and defer to his recollections
I work at a frame manufacturer and was just in the blast room yesterday! We blast 0.9 wall tubing for powdercoat all day. We also blasted some Zona the other day. I'll see if i can get some data for you all.