[DeTomaso] Cooling system hose questions

[Julian Kift]

I don't have access to photo's right now, but if this is a Flexalite unit the 'pusher' and 'sucker' applications are two different and distinct part numbers.

Julian

> Date: Thu, 28 May 2009 20:13:23 -0700
> From: asajay at asajay.com
> To: detomaso at realbig.com
> Subject: Re: [DeTomaso] Cooling system hose questions
> 
> Maybe I should just mount them on the front.  As long as I have a decent 
> seal around the edge, I should accomplish essentially the same thing 
> shouldn't I?
> 
> Comments?
> 
> Asa Jay
> 
> Asa Jay Laughton, MSgt, USAFR, Retired
> 
> & Shelley Marie
> Spokane, WA
> 
> 1971 Mach I Mustang  [ASA JAY]
> 1973 Pantera L 5533  [ASASCAT]
>     
> ******************************     
> http://www.asajay.com
> http://www.teampanteraracing.com
>   
> 
> 
> 
> Asa Jay Laughton wrote:
> > Okay, obviously I'm not communicating this correctly.  The fan blades 
> > are -straight- from the center hub to the outside ring.  There is no 
> > curve to them between the hub and the ring.  We'll say each blade is 
> > about six inches long by about two inches wide. The blade is straight 
> > along it's length.  The blade is convex, or curved across the width.
> >
> > Stock Pantera fan:
> > http://www.teampanteraracing.com/index.php?option=com_g2bridge&view=gallery&Itemid=57&g2_itemId=2554
> >
> > Note how it has a curved (convex) blade that effectively -scoops- the 
> > air as the blade goes around, blowing air into the radiator.
> >
> >
> > Now look at the dual fan assembly here:
> > http://www.teampanteraracing.com/index.php?option=com_g2bridge&view=gallery&Itemid=57&g2_itemId=2548
> > http://www.teampanteraracing.com/index.php?option=com_g2bridge&view=gallery&Itemid=57&g2_itemId=2551
> >
> > Note how it too has curved blades, but also note that when mounted to 
> > the -back- of a radiator, in a sucker arrangement, -and- the fan turning 
> > in the correct direction to suck air through the radiator, the curve 
> > will not be scooping the air.  To me, this creates an inefficiency.
> >
> > Do the photos help?
> > Asa Jay
> >
> >
> > Asa Jay Laughton, MSgt, USAFR, Retired
> >
> > & Shelley Marie
> > Spokane, WA
> >
> > 1971 Mach I Mustang  [ASA JAY]
> > 1973 Pantera L 5533  [ASASCAT]
> >     
> > ******************************     
> > http://www.asajay.com
> > http://www.teampanteraracing.com
> >   
> >
> >
> >
> > MikeLDrew at aol.com wrote:
> >   
> >> In a message dated 5/28/09 13 51 16, asajay at asajay.com writes:
> >>
> >>
> >>   
> >>     
> >>> I don't mind the curve, what I mind is that it's not "scooping" the 
> >>> air with the curve.  Imagine for a moment, mounting an orignal Pantera 
> >>> fan on the motor backwards, so the curve is the wrong way.  It still 
> >>> works if the motor turns the right way, but how less efficient is it?
> >>>
> >>>     
> >>>       
> >>>>> Scimitar fans don't work by scooping the air.   They are deliberately 
> >>>>>         
> >>>>>           
> >> curved so that the outside of the fan blade trails the inside by several 
> >> inches.   I don't understand why it's better, but it's the latest trend in 
> >> propeller/fan aerodynamics.   Among other things, it is much quieter.   From the 
> >> Spal website FAQ section:
> >>
> >> Q.    What's the difference between the straight blade fans and the curved 
> >> blade fans?
> >> A.     The straight blade fans provide maximum cooling for their size.  The 
> >> curved blade fans sacrifice a small amount of performance in return for a 
> >> much quieter fan. If noise is an issue, go with the curved blade fans.  If 
> >> ultimate performance is the objective, use the straight blade fans.
> >>
> >> Mike
> >>
> >>
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