On Tue, 20 Mar 2018 14:55:32 +0100, Emanuel Berg
wrote:

AMuzi wrote:

http://www.yellowjersey.org/gth8.jpg

Right, but are the tubes typically that thin?
If so I see the point.


High end tubes are typically less then 1mm wall thickness. A Columbus
"Spirit" top tube is 0.38mm ( wall thickness ) and is butted on each
end to 0.5mm.
--
Cheers,

John B.