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Old 05-12-2010, 10:29 PM   #25
MikeK
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Join Date: May 2010
Location: Windy City
Posts: 2,919
Default Re: Another Original 2-Blade Fan Takes Its Toll

Hate to be the naysayer, but NO. Price is not the concern, reliability is. OK, so it's new and you reset the cycles-to-failure clock, but it is still stamped steel flat stock and will fail from cyclic work hardening.

Now, if it was a vacuum investment cast nickel-titanium alloy single piece with controlled grain structure, like jet engine turbine blades are made, I'd pay $1,000 for one in a heartbeat. If made this way, every detail, including seam weld and spot weld marks could be reproduced exactly. It would be a perfect visual (J.S.) match, pass the magnet test, be 10x as strong, and likely have a M.T.B.F. of 100,000 hrs @ 10,000 rpm. As a plus, on addition to dynamic ballancing, the air thrust balance between the two blades could be near perfect.

Vacuum Investment Casting Overview Link Here: http://www.consarc.com/pages/vpic.html
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