Rotary Car Club - View Single Post - 4 or 5 Blades. Which is better? radiator cooling

***ZGN*** · 08-07-2008, 12:07 PM

A 4 blade seems like it would require higher speed to = the same amount of airflow of a 5 blade. If this is true then why would mazda use a 4 blade fan on one fan and a 5 on the other. There has to be a reason.

08-07-2008, 12:07 PM	#4
*ZGN* Administrator Join Date: Jan 2008 Location: Birmingham, AL Posts: 2,264 Rep Power: 10	A 4 blade seems like it would require higher speed to = the same amount of airflow of a 5 blade. If this is true then why would mazda use a 4 blade fan on one fan and a 5 on the other. There has to be a reason.