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08-27-2005 03:52 PM #19
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- Join Date
- Apr 2001
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- St Cloud
- Car Year, Make, Model: 48 GMC trk & a 66 Rolls Royce
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You simply can not beat a mech fan w/a clutch. Since nothing works at 100% effiecency it takes more power to run the alternator that feeds the electric fan than a electric fan produces.
Thus, for those cars that run a/c & have the fan running all the time you actuall use more energy w/a electric fan. The mech fans speed & power changes w/temp(clutch) & thus are more efficient if running a/c.
If you insist on running a electric fan use a Lincoln mark7 or 8. They are a 2 speed fan that I have measured 38 amps , which should be right at 4000 free air cfm.
DonLast edited by Don Meyer; 08-29-2005 at 03:27 PM.
Don Meyer, PhD-Mech Engr(48 GMC Trk/chopped/cab extended/caddy fins & a GM converted Rolls Royce Silver Shadow).
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