Frank,
I came across a interesting web site a while back with many different types of homemade bikes.
You may find it helpful with your project. Here are two links that relate to your project, or just click on the category of your choice at the top of the page.
AtomicZombie Builder's Gallery - Short Wheelbase Recumbent 1
AtomicZombie Builder's Gallery - Long Wheelbase Recumbent 1
This guy also provides tutorials on bike component repair and fabrication.
Atomic Zombie Extreme Machines! - Bikes Trikes and Chopper Plans
Good luck with your project.
Bikes are cool...
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