Originally Posted by
EpicSchwinn
JB welding a freewheel is called a suicide hub for a very good reason. If you do try it, don't remove your brakes!
Back pedaling with a fixed gear will make the bike move backwards assuming you're standing still. Applying back pressure while rolling will make you slow down.
A suicide hub is a normal threaded road hub with track cog and bottom bracket lockring. This is not that... I've welded (not JB) up a crappy bmx freewheel out of boredom while stuck in Alaska for a few months because there was an abandoned bmx bike left in the garage. It worked, but I wouldn't trust it for anything other than tooling around.