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#1
07-14-2020, 02:01 AM
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I'd like to think that the crease in the flex blades of that fan create stress risers, causing cracks to start after enough flexing. The reason I'd like that: because then I'd be more comfortable with the curved blades on the flex fan I just put on the Pontiac in my GMC!
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Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) ... or has a Pontiac born the same year as Jim Wangers? (1926} 
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#2
07-14-2020, 10:07 AM
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The few OE failed fans I have seen all failed at the rivets that held the blades. But all the OE fans I have seen have cupped blades and not the sharp creases like the one in this thread. When a blade does come apart, the potential for damage and injury is very high. The fan I just installed in my 62 Catalina is a 19" 1970 Oldsmobile clutch fan. The blades are a 2" pitch, cupped design. stainless steel blades riveted to a steel hub.
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#3
07-14-2020, 10:17 AM
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Wow, I didn't think people were running those things anymore.
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#4
07-14-2020, 10:30 AM
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Quote:
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