3 ms·

Also flywheels don't give off noxious fumes during failure.

• tossandturn 8y ago
  ...or during production (relatively speaking).
• naravara 8y ago
  For now. If you want to use one for long term energy storage, though, you're going to need to invent some kind of room temperature superconductor and frictionless surfaces. Who knows whether those would be noxious or not.
  • smaddox 8y ago
    Why? Magnetic bearings and copper work just fine...
• jhayward 8y ago
  Are you sure? Metal fumes and vaporized epoxies are usually pretty toxic.