I considered that but my wife probably hasn't ever revved past 3000, and I seldom do. I warned her in case she decides to start now. I also respectfully disagree with the opinion that the fan couldn't spin the full redline of the engine without grenading.
What's inside the clutch? Has anyone had one apart? Is it like a torque converter, two sets of vanes? It must be a more total lockup or else the spin-the-fan-while-the-engine's-hot clutch diagnostic wouldn't work. I wonder how it could possibly decouple at a certain RPM? A couple governor weights could open a valve I guess. I still think it spins right along, though.
