This is probably one of the latest examples of a bonded frame, the Lemond Spine bikes. Mine is steel and C.F. This was built up as my light climbing beast but as of the test ride on my trade in De Rosa yesterday morning, this is excess. Listed locally because I don't need two triple setups. These frames must be fairly light as it weighs in at 18lbs 4 ozs as built in this picture. Very respectable for a triple setup running alloy wheels. I put way too much into this one too, LOL!
These also came in aluminum/C.F. and Titanium/C.F. configurations.