i just put my bike back together, 1963 schwinn varsity. i got a new chain for it and everything. the chain was the same size as my old one. now that i have put the shifters back on and adjusted the derailleurs, the chain keeps "slipping". it feels like its popping off and catching again every time i start to pedal real hard/moderate in 10th gear. i dont know what can be causing this. it shifts fine and everything (thanks to all that helped with the last post!).
this chain thing is killing me here though. help!?