[darkpuppet]

Those electric impact wrenches are pretty amazing... better if you can get an extension corded one, since they're more powerful and consume some heavy amperage. (ie 8A).

Are there any power sockets in your storage facility? Sometimes they have power built into the florescent fixtures... just a thought.

But the long bar and a hammer works pretty good. If it's a sharp force, you don't need much to stop the flywheel.