There is a very good interview with Ernesto Colnago here that discuss the
bike(s):
http://www.cyclingnews.com/
go
on to next page)
Some quotes:
-"it's hard to imagine how much work we put into building those two
bicycles"
-"no one in Italy could weld titanium, so I went to Pino Morroni in
Detroit, America to weld the special lightweight titanium stem for Merckx's
Hour Record bicycle."
-"We made two road bikes with the same geometry for him."
-"The only thing we couldn't get for Merckx was Helium gas for the tires."
and more...worth reading.
Angel Garcia
Verona, Italy