Gosh, Hilary.... that TT frame is wickedly cool, makes me want to chop 3 inches off my inseam just to be able to ride it. Talk about "fag paper" clearances! Makes my 1982ish Alan Shorter look like a touring frame in comparison. What is the bb height on this.. it looks tremendous, just the think for 180 cm cranks and a 56t ring.
I think Engers and others put 35 mm film stock behind the head tube cut-outs on these machines as all that cutting out caused airflow problems and increased drag as much as they reduced weight.
Hope this finds an appreciative home. What a find.
Peter Kohler
Washington DC USA