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Tom Wesenberg · 08-15-2012, 10:43 PM

First make sure the blades run in the same plane, and the leading edge of one blade is parallel to the other blade's leading edge. If these are good I'd bet you'll find the balance is very close to perfect. Hopefully the blades aren't bent from using them to turn the engine. Even the last 3 aluminum fans I checked were so well balanced that I wouldn't touch them.

08-15-2012, 10:43 PM	#8
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: fan First make sure the blades run in the same plane, and the leading edge of one blade is parallel to the other blade's leading edge. If these are good I'd bet you'll find the balance is very close to perfect. Hopefully the blades aren't bent from using them to turn the engine. Even the last 3 aluminum fans I checked were so well balanced that I wouldn't touch them.