Quintana Roo Caliente Triathlon frame (700c) converted to single speed. Frame is size 59cm per manufacturer specs, but being triathlon it is a measures differently. The actual measurements are:
top tube 54cm center to center
seat tube 53cm center to center
seat tube 59cm center to top
I'm 5'7 and i can ride it, but stand-over is not very comfortable so if you have 32" or higher stand-over - this will be a good fit.
bike is built with Sram GXP track cranks (S100 or S300 i am not sure)
Alex rims wheels with fresh continental tires (rear runs Origin 8 single speed conversion kit)
Basic rider bars with shimano 105 brake caliper and original triathlon saddle.
the frame has horizontal dropouts, so if you want to run fixed gear - that is an option as well.
Bike is light - 16lbs.
The only issue with it is that the bottom bracket seems to cause some cranks wobble. When you ride it is not noticeable at all. I use the cranks with a different bb on another bike and had no issues. The bb on this Caliente is original to the bike, so i think it just got a bit dated. Not a major issue.