Hey guys, Im new to this site and the whole fixed gear world. I recently rode a friends fixed gear and loved it. I was wondering if converting this bike was possible and how I could do it for as little cash as possible, heres a link to the bike, http://philadelphia.craigslist.org/bik/442844471.html Now my main concern was the rear hub. Im not exactly sure how it all works but my friend has a flip flop hub which i definitly want to be able to ride both the single and fixed, the guy selling the bike said he has extra rims for sale that are black, which Is the color I want. Now it is as simple as purchasing the bike, purchasing the rims and purchasing a flip flop hub and installing the hub in the rear tire and just swapping the existing front hub onto the new rim and putting them back on the bike? or is there alot more mechanical work that would have to be done IE a new crank and what not? I was hoping to just purchase the bike, the parts necessary for the flip flop hub and some new pedals and was going to paint the bike myself. Am I making this scenario to simple or is it alot more complicated than Im thinking it is? Thanks in advance!