I'm building three of these for some guys who have a small team out of a bike service shop on the Facebook campus. These guys will take time off of wrenching to do some of the bigger gravel events around the country. Word has it that this bike will be at the Dirty Kanza- I'm not sure if any of my bikes have ever been ridden there. If I were about 30 years younger I would try to qualify. Being 64 I think I'm a bit past it to try 200 miles of rolling dirt, mud and pain.
This one is a mixture of Columbus Zona , Reynolds 725 and Velospec tubes- all of it fairly stout for all the torque that a really tall rider can dish out.