I was hoping someone could help me with this problem I'm having. I just bought a Raleigh Rush Hour from a friend of mine. He was riding it free wheel but I prefer fixed so we flipped the rear tire around. Everything was going fine until I started skid stopping. It felt like something was skipping or turning to much (sorry for the cryptic descriptions). I would continue pedaling and its almost like it fell back into place and went back to normal. After that I did a particularly long stop and it felt as if my chain fell off. I was pedaling but it wasn't moving the rear tire at all. After that the only way I could move the rear tire was if I pedaled slowly without too much force. I dont really know whats wrong, Im still very new to this. Can anyone point me in the right direction? Is that a common problem?