Hey nice bike you have there.
I'm building a home made recumbent I've stopped work on it for now as I'm doing other things I plan on putting a china engine on it sometime. right now it setting on my back porch rusting quietly need to get some wheels and brakes etc.
The small engine on there is a leaf blower I gave up on that idea its ruff as yell right now but some day I'll finish it. the seat is not finished either I needed something to sit on just to try it out.

Rough isn't it. plans can be gotten from easy clone recumbent bikes