Check out this homebuilt generator over on Street Use… – “In theory if you spin an electric motor, it should “run backwards” and generate electricity. So this guy, Dan Meyer, in Minnesota built a small generator using an old gas engine and an old DC motor.” – Link.

Related:

• Homemade generator – Link.
• Building a solar generator – Link.
• Wind Powered Generator – Link.
• Build a pedal powered generator – Link.