Originally Posted by
Aeroplane
Take it to a shop and have them take it off. Freewheel removal tools are only good to have if you are taking off the same kind of freewheel all the time. Your shop, however, will probably have every type of freewheel removal tool under the sun, and can do it in under a minute.
Aeroplane is correct, there are a TON of freewheel tool removers - Sachs, Shimano... etc...
I'm not sure what you mean by using two chains, perhaps you mean two chain whips? A chain whip will have a chain on one end and a socket hole in the other. You use one whip to hold the freewheel in place (because loosening will spin it forward), and the other with the socket hole to go around the freewheel remover in the freewheel itself. Then, try your best to hold the freewheel with one whip while loosening it with the other.
Alternatively, put the freewheel remover in a vice grip, put your wheel in it (freewheel facing toward the ground) and spin the wheel.