Look back in the archives on electric fans and you will find that karl
moltzan had them installed in his dak he said that he needed about 4000cfm
to keep it cool enough while sitting in traffic on a 105 degree day, at
about 1/2 on the temp gauge with that. His system I believe had a 2800
cfm behind the radiator and another 1200 in front of it its all in the
archives just take a look I might have stated something wrong.
Chris Lang
-----Original Message-----
From: Bruce Bridges <bbridges@alarismed.com>
To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
Date: Tuesday, June 16, 1998 10:39 AM
Subject: Re: DML:Electric fans and back pressure
>DMLers
>watch out for restrictions in front of and behind the fans (like the
>engine). CFM ratings have to have back pressure factored in, and CFM vs
>backpressure is a function of fan blade/housing design. Hopefully the
>catalogue guys figure in some nominal backpressure to make their numbers
>"real". Doesnt seem like 2950cfm is enough does it...
>BKB
>At 09:14 AM 6/16/98 -0400, you wrote:
>>>The largest CFM rated 18" fan I've found so far is rated at 2700 CFMs
>>and I
>> >don't know if that is enough for our engines to stay cool.
>>
>>I saw in a catalog (Jegs?) that they sell electrics rated for 2950CFM
>>(dual fan) capable of handling a 280HP motor or 250HP with AC.
>>
>>Thought this might give you an idea of CFM needed.
>>
>>
>>Scott...
>>Lost in the Catskills of Upstate NY
>>
>>
>>
>
>
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:08:56 EDT