I have a flip flob hub which is fixed gear on one side. I want to install a freewheel on the other side. Is there a particular way to go about doing this? For example, do I need to use any special tools to install it (or to remove the freewheel later on). Since the bike has track ends, do have to adjust the spacing to make sure the chainline is straight or can I use the same spacing as I do for the fixed cog (the idea being that the freewheel is wider than the fixed cog).
Anything else I need to know before doing this? Thank you.