[DeTomaso] Cooling system hose questions

Fri May 29 06:20:10 EDT 2009

Tomas Gunnarsson skrev:
> Pushers will bend away from the radiator while operating and suckers
> will move towards the radiator, right?

Yes, but when you're driving at 150mph I doubt that the fans are 
running, even if they are spinning, and that they would be able to push 
air at higher speed than that ;-)

>  
> Tomas
> 
> <-----Ursprungligt Meddelande----->
> From: Thomas Tornblom [Thomas.Tornblom at hax.se]
> Sent: 29/5/2009 9:26:04 AM
> To: detomaso at realbig.com
> Subject: Re: [DeTomaso] Cooling system hose questions
> 
> One thing against pushers is that if the blades are flexible they might 
> run into the radiator at high speed, destroying the radiator.
> 
> Why would you lay the radiator down if you have the fans in front of the
> radiator? I believe the reason for a lay down arrangement is mainly for 
> space issues with sucker fans.
> 
> Thomas
> 
> 
> Julian Kift skrev:
>> 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.asajay.com/> 
>>> http://www.teampanteraracing.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=gall
> ery&Itemid=57&g2_itemId=2554
> <http://www.teampanteraracing.com/index.php?option=com_g2bridge&view=gal
> lery&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=gall
> ery&Itemid=57&g2_itemId=2548
> <http://www.teampanteraracing.com/index.php?option=com_g2bridge&view=gal
> lery&Itemid=57&g2_itemId=2548> 
> http://www.teampanteraracing.com/index.php?option=com_g2bridge&view=gall
> ery&Itemid=57&g2_itemId=2551
> <http://www.teampanteraracing.com/index.php?option=com_g2bridge&view=gal
> lery&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.asajay.com/> 
>>>> http://www.teampanteraracing.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
>>>>>
>>>>>
>>>>> **************
>>>>> Cooking Dinner For Two? Sign Up & Get Immediate 
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