Karl, I had a 50cc Honda when I was on Okinawa in 63. Looked like this one, except it wasn't a cafe racer style. Mine had a ironing board seat and a back fender. Ran well with just me on it, but when my nasan got on the back the chain would come off on the slightest incline. I was skinny then, but she was a little on the chubby side. Then I upgraded to a 305 Dream. It handled both of us, no sweat.
Mac