alt.energy.renewable

-> The gyro idea is nonsense from a practical point of view. 1 rev/day
-> torque would be in the billions of N-m for even a few kilowatts not to
-> mention the frictional losses from such a huge disks spinning in air
-> or maintaining a vacuum.

It's not only impractical, it's impossible for such a machine to
extract even a teeny bit of energy from the earth's rotation.

dow