While I’m waiting for my last stepper motor, I’ve been pondering my electric motorcycle build. While eyeballing batteries, I ran across a really impressive human/electric recumbent bike project. [Bob Dold] built this for his M.S.M.E. Thesis project. The frame was built from bonded aluminum. The flat parts were cut via waterjet service, and the rest were machined by the college’s machine shop. The 1000w motor (and controller) came from a Schwinn X1000 electric scooter. Looks like a four link suspension (plus steering and shock linkages). Interestingly, he’s using some USB data loggers for voltage and current(with a shunt) and combining it with GPS data to track real world performance.