Trek on 1/24/2012 8:56:45 PM:
I don't have experience with our bikes and riding the train, but I have checked it out in the past while trying to plan a trip with our tandem. I just cut this from Amtrak's website:
No unusual bikes allowed
Bicycle racks will not accommodate tandem, recumbent or other unusual bikes. Such bikes must be transported as checked baggage, in a box.
No couplers on the tandem, so I couldn't see taking it as checked baggage. We'll take the half bikes as roll on's if we do a trip where we ride the train.