My mountain bike is a Schwinn S-30. It's in my dad's garage right now, so I cannot post pictures. The closest I can find in google images is a S-25.
I picked up this at Academy for $55 last week.
It's a Pacific Oceanside. I'm going to mount a 500 watt brushless motor to it.
I also have an old Puch Waffenrad that I plan to fix up sometime.
Everything on it appears to be original, including the tires. If anyone has info on this bike, I'd like to know.