Should you get a heavy duty fan clutch?

I took a video today to help @machoheadgames figure out if his is working correctly. Figured I'd post here so people can compare.

cold start, revving to about 2300rpm until the fan clutch disengaged after approx 15 seconds.


Based on how far I'd get from my house before the Hayden stopped roaring, I'd guess this test would have taken a good two minutes.

Are you running the 22159 or 22160?