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Date: Tue, 11 Jul 2006 09:03:22 -0400
From: Ernest Christley <echristley@nc.rr.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: -  EWP Power
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Bulent Aliev wrote:

>
>> In a message dated 7/10/2006 11:43:35 AM Central Standard Time,  
>> jesse@jessfarr.com writes:
>> Have any of you ewp folks looked at CSR Performance products stuff?  
>> They
>> tell me they have a high volume pump that fits into some good looking
>> anodized aluminum housings for big block car stuff that will pump  up 
>> to 70
>> gpm and is expected to last for 5500 hours or so; and, they have a  
>> remote
>> that is something like davies-craig that is also expected to last  
>> about 5500
>> hours and pumps around 35 to 37 gpm. They run in the $250 to $300  
>> range,
>> supposedly use about 5 or 6 amps; and, I would like to learn from  
>> someone
>> else's experimentation, if possible. <g>
>> jofarr, soddy tn
>>
>
> Looks like somebody is dreaming in Technicolor. I sell DC pumps on my  
> web site. The smallest 3 GPM pump is using 5-7A and the pump is 3  
> pounds. Pump that will pump 15 GPM at 12V DC is about 30 pounds and  
> huge motor. There is no free lunch. Pumping 35-37 GPM on 5-7 amps? My  
> transponder needs 7 amps.
> Buly

What is the head pressure on those flow figures?

-- 
         ,|"|"|,              Ernest Christley       |
----===<{{(oQo)}}>===----    Dyke Delta Builder      |
        o|  d  |o        http://ernest.isa-geek.org  |