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View Full Version : long cooling article but worth a read



jeff5347
07-12-2006, 09:24 AM
i found this article on Chevy Hi Perf
http://store.summitracing.com/partdetail.asp?autofilter=1&part=FLX%2D150&N=115&autoview=sku

Confused i was curious on the part that states
"The shape of the fan's blades will change the fan's performance. A straight-blade fan is generally the most efficient fan possible, but often the noisiest. A quieter, curved-blade fan will move about 10 percent less air than a comparably sized straight-blade fan. "

So should a taurus fan still outperform a flex a lite black magic?

porschev8
07-12-2006, 03:32 PM
The Taurus fan will move more air.

The problem with curved blade fans is the CFM drops off more rapidly as the static pressure increases.

engine
07-12-2006, 03:36 PM
the number of blades, as well as fan diameter and fan speed, play an important part in how much air a fan can move. The Taurus fan is a curved blade fan, but it has 9 blades to compensate for moving more air while being quiet. It is also 16" in diameter. The Black Majic has 8 blades and is 15" in diameter
The Taurus fan is said to move about 3800 CFM, while the Black Majic moves 2800 cfm.
The Taurus fan also has a more powerful, and durable electric motor.