That is one out of the box brake set up! No wonder why you have faith in your front coaster set up. Dang that is a clone fer sure. Looks just like the Honda. Hey I wanted the Briggs. The mind conceived, but the hands missed the mark. I could put an angled mm plate over the existing and make it work. So if the power isn't there ill be redoing it. I'm in holding, waiting for a #35 sprocket,and freewheel from sbp. I thought I could use a sprocket freewheel from a razor mx500.. nope..their threaded uncommonly, they go on halfway, then you gotta wrench'em on..and I didn't want to chance striping my adaptor. Al ready thinking of a build using a cruiser frame and running down tubes like jeff's bikes (CCC).