Frame has a slightly sloping top tube, c-c the seattube is 48cm, the top tube is 54cm, and the chainstays are 41.5(I'm 5' 6" and had it setup with flat handle bars). Uses a 26.8mm seatpost, and 1 1/8th headset. Brake bridge is drilled for a sidepull brake, but it also has canti posts on the seat stays. Dropout spacing is 130mm, and it also has cable routing under the downtube for a Nexus/Alfine IGH shift cable. I rode this with 28mm 700c tires, but it could likely be setup w/ larger 650b tires.
Includes a 115 tooth Gates CDX belt ($80 new), 55 tooth Gates CDX 130 bcd ring ($80 new), and 21 tooth CDX thread on fixed cog ($70 new). The drive train probably has under 800 miles, looks near new, and CDX setups are known to last for quite a few thousand miles. I found that gearing (fixed) to be very comfortable for commuting Melrose to Boston for a few months daily. Compared to a chain drive this is absolutely silent, and compared to a chain driven fixed setup there is zero 'slop'.
I'm the second or third owner, and though there are a few small dings/paint chips this is a fantastic commuter/whatever bike(I wanted to go internally geared w/ 650b wheels personally but never got around to it). Manufactured by Quijano, and I'll send you a link to what appears to be their blog post about the frame.
Lots of other parts for sale if you are looking to piece together a full build. I'm north of the city, but can find time to meet in Boston/Somerville/Cambridge.
do NOT contact me with unsolicited services or offers