A few years ago I bought a Kent tandem for me and my wife. Earlier this year we finally took it out for a spin. It was a bit hit or miss on that first ride, but on subsequent rides we determined that we loved riding together.
So the Kent went to a friend and I picked up one of these tandems. The weight difference was noticeable. The first thing that I did was to tear everything down, clean out all of the bearings and reinstall properly.
As noted, many of the components are substandard, but my plan is to refit it with better parts and put some miles on it. I'll likely look into a ghost ring as the idler is rather noisy.