Someone locally had a Santana tandem used for sale for a few hundred dollars. It's a good frame but I am not sure about the rear wheel. There was a newly wedded couple on the Northern Tier going west to east in 1987. We bicycle together a few times. My wheels cost $26 each. His rear wheel cost $250, according to him. I had no trouble with any of my wheels. His Freewheel tightened down to the point it was impossible to turn counterclockwise. I watched him try with all his might. He actually broke the teeth off the fitting. There was no way that Freewheel was going to loosen. He had a Broken Spoke. He had to thread that in that little hole he had to thread the spoke in the spoke hole and bend it repeatedly maybe a hundred or 200 times to fit it through the hole. There was not enough space between the Freewheel and the flange for the spoke to be Insurgent straight in. I thought to myself a bicycle wheel that costs $250 for a tandem bicycle should at least have some kind of a stop built in to prevent that problem. The free wheel has to pull two people which could be $300 400 lb. Maybe 450 lb plus the weight of the bicycle and the baggage. That's very different from pulling the weight of one person. His wheel cost 10 times what mine cost but he had 10 times the trouble.