It is a standard 53/39, but no, it doesn't quite fit... Do you know a source for larger chain rings that will fit a Shimano 105 5-bolt pattern 5700 series crankset? I wouldn't mind a 58 or 60 tooth, but I like the weight and quality of the Shimano 105's and Ultegra's.
Started today's build session by cutting the steerer tube on the fork down about 4 inches. After acquiring a range of potential cutting tools at my local Home Depot I ended up using a $15.85 tubing cutter (designed for cutting thin-walled metal conduit for electrical wiring). It worked great. Clean cut, perpendicular to the steerer, and almost no sharp edges to clean up. Well worth the expense.
Today's big dissapointment was that the front derailleur bracket on the frame is about 3-5mm too high in its lowest position so I have a potential issue with the Shimano Ultegra 6700 series derailler I planned to use. The bracket also seems to make the derailler sit at the wrong angle, with the rear of the derailler lower to the chainring vs. the front of the derailleur. I will see if a low-bracket SRAM clamp-on will work...
I planned to use a bottom-pull front derailleur and to do that I need a pulley which I don't have. The frame has the weld-on fitting for the pulley, but I didn't have one lying around in spare parts, so I have to acquire it before I can complete the build.
Brakes set up OK, the Tektro levers I chose don't have as long a pull as regular road levers, but they seem to be able to stop the bike. I chose Avid BB7 mechanical road disc brakes since I have had good luck with the standard BB7s on a couple of other bikes. Hydraulics seem to work better, but I hope to use this folder in far away places so I wanted brakes that I could find housing and cables for where ever I was.
Here is a look at what the build looks like at the end of today. Once I get the front derailler issues sorted out it will be rideable in about 20 minutes. Not totally sure of my shift lever positions, so I won't tape the bars until I am satisfied with how they are placed on the bars.
