As tight as freewheels can be, I don't know that I'd use a pin wrench to try to remove one...unless it's a really durable pin wrench. To get them off you usually have to clamp the freewheel removal tool in a vise. Generally you'd need a 2-pronged freewheel removal tool...but with prongs that fit into the notches on the freewheel (similar) to the one on the right/foreground in my pic below. Once, I encountered a freewheel with odd sized notches that I didn't have a tool for. In that case I ended up fashioning my own tool (the one on the left) by cutting off the end, and grinding down the prongs of an old ratchet. I've actually used that thing several times.




Dan