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A mechanical fan with a properly designed shroud represents the best low-speed cooling option available. The flex fan on the ungainly spacer was merely for fabrication purposes; the thermal-clutch fan that replaced it robs no power when disengaged and moves volumes more air than any similar electric fan. Whether fixed-blade, flex-blade, or coupled by a thermal clutch, a mechanical fan moves a ton of air. The pressure generated at idle was sufficient to suck this folded terry cloth towel to my car’s grille. View Related Article
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