I'm the third owner of this trike and I ride it EVERY day.I noticed a few days ago that I had no resistance when pedaling and then this morning it stopped altogether, I hopped off and checked it. The axle there the back chain connects was moving, but where the front chain connects was not moving. I started to walk it home and it started to work again.
What's wrong and how do I fix it? I live in a town where NO ONE does trikes or bikes, and I don't have any way to take it somewhere to fix.
EDIT
Underside of a Schwinn showing the jackshaft/intermediate shaft and both chains in place.
Update: 2018-06
I posted about this about two years ago and the other trike is no longer on the road. New trike (got it about a year ago) is now having the same issue as the last. It's no longer pedaling. I have a video on twitter that I just did to explain it better.
https://twitter.com/i/status/1005178798915178502
Please help! This trike is my only ride!