surly crosscheck with white industries double double…
Here is a sweet setup that we had the pleasure of doing for a very good customer.
It utilizes the White Industries Double Double crankset & freewheel. It essentially allows two different gear ratios while maintaining the simplicity of a single speed setup.
Read more about it here: http://www.whiteind.com/double-double-system.html
Mustache bar makes the cockpit super comfy.
Brooks saddle & Acorn saddle bag class it up like no other can.
Another fine hand-built wheelset round things off nicely!
The Broken Spoke 
Beautiful bike – the double double is a great idea.
Thanks for sharing.
Look at all those spacers!