Join Date: Oct 2002
Location: Annandale, New Jersey
Bikes: 2014 Surly Steamroller, 1989 Nishiki Altron
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Go to a 5 arm setup and keep up on the chainring bolt tensions, if done so , next time you will have to change chainrings will be when you wear the teeth out. While it would be ideal to use fixed specific parts with it, you can get away with using non fixed gear specific parts. On my fixed gear, I'm using the double ultegra cranks and just running one chainring on the inside part of the spider for a closer chainline.
For most needs, you can go with a square taper bottom bracket, especially if you are a larger person since a square tapered bb will have larger bearings which equate to a better weight bearing load capability than the smaller bearings found in a splined bottom bracket.