classic motorcycle forum

Hello all, newby here.  I am looking for some help..I am trying to restore a Ducati RT 450, but have run into a problem. Anyone know how to take the rear tire off?  The original rear swingarm is completly closed and I am not able to take the tire off.  On a newer bike, you slide the tire off the rear of the swing arm.  Well not in this case, it's closed.  I can't pry the swing arm open, but I guess you're not supposed to.  Can anyone please help.  Or is it as easy as having to cut it open.