Okay y'all, late night question while doing research for you. I'm currently rebuilding an old Schwinn bicycle into a single speed (mostly for the learning experience) and there are so many words being thrown around I am starting to get confused. I have read Sheldon Brown about 50 times and still I have no idea what I am doing.

Here is what I have - a rear wheel with a flip flop hub, a 16 tooth cog and a lock ring.

After watching some YouTube videos, it seems to me that these are the appropriate parts for building a fixie (no thanks!) but that for a single speed bicycle I need something called a "freewheel". I am assuming that if I put the cog and lockring on the non-fixed side (the side without the "stepped" threads) that this will not allow the wheel to turn while coasting (not sure if it's even possible to put these two things on the non-fixed side).

So, the question is - do I need this thing called a freewheel? And if so, do you have any recommendations for good ones? The wheels are EighthInch Amelia wheels if that makes any difference (doubtful).

(I haven't even started on the crank/bottom bracket yet, so there will probably be more questions later).

Thanks in advance!!