i dont get it. the 2008 cowan has replaceable dropouts. they make horizontal dropouts too SO YOU CAN RUN SINGLE SPEED. but for some reason every one keeps the regular dropouts and has a chain tensioner. i have a 2008 cowan. i dont know why andreu is running the regular dropouts and a chain guide. soo much weight
maybe he sacrifices the weight so that he can run the rear wheel in farther, if u have horizontal drop outs it bumps the wheel back farther making the bike longer thus harder to spin, tailwhip etc.