Return-Path: Received: from imf22aec.mail.bellsouth.net ([205.152.59.70] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 520728 for flyrotary@lancaironline.net; Sat, 06 Nov 2004 14:24:11 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.70; envelope-from=atlasyts@bellsouth.net Received: from [65.11.149.188] by imf22aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20041106192341.SZSU2430.imf22aec.mail.bellsouth.net@[65.11.149.188]> for ; Sat, 6 Nov 2004 14:23:41 -0500 User-Agent: Microsoft-Entourage/10.1.4.030702.0 Date: Sat, 06 Nov 2004 14:22:52 -0500 Subject: Re: [FlyRotary] Re: EWP From: Bulent Aliev To: Rotary motors in aircraft Message-ID: In-Reply-To: Mime-version: 1.0 Content-type: multipart/related; boundary="B_3182595777_4522144" > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3182595777_4522144 Content-type: multipart/alternative; boundary="B_3182595777_4469039" --B_3182595777_4469039 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit On 11/6/04 12:14 PM, "Russell Duffy" <13brv3@bellsouth.net> wrote: > So I will add to Bulent's question - what will be the current draw at 25 > gallons per minute when installed in a functioning cooling system? > > Ken Powell > > > I'm going to put a meter on mine, maybe today. In the mean time, below is an > excerpt from one of Todd's posts that I found in the archive. Current is WAY > low on the Davies Craig pump. If I can verify this, I'd say there's no > problem running one of them when the alt fails. > > Cheers, > Rusty (mourning the departure of one of my fillings) > > > > Hi Guy's > I brought home a new mag tube & transmitter, which I tested first > against a calibration standard, so I'm certain of it's accuracy. I ran a full > set of tests tonight and was somewhat surprised at the results. > > I ran the first test with the Ford evap cores in the system, plumbed > in parallel. > * Max flow 9.3 usg/m 35 l/m > * 12.07 volt battery supply voltage > * .49 amps current draw > * 1.8 amps max inrush current > Second test had no evap cores in the system. Simply recirced water through > pump - engine - header tank - pump. > * max flow 13.0 usg/m 49 l/m > * 12.06 volt battery supply voltage > * .37 amps current draw > * 3 amps max inrush current. > Third test, I plumbed in a set of GM (Harrison) evap cores in parallel, > into the system. I hung them just below my mounted Ford cores, using they same > pipe sizes in an effort to have comparable test conditions. > * max flow 7.7 usg/m 29 l/m > * 12.4 volts supply voltage (I hooked a trickle charger to the battery) > * .47 amps max current draw > In each test configuration test results are with heater valve closed. > Heater core added .5 usg/m in each case. > > In all of the above tests the electronic pump controller was bypassed to > give full battery voltage to the pump. With the pump controller in use, as the > water was cold well water, controller had pump at minimum flow which was > measured at .6 usg/m - 2.2 l/m. I suppose I should have dipped the RTD probe > into hot water to watch the flow increase, however all test equipment is > packed up and system is back together. > Hi Rusty, I have hard time believing these Amp draw figures? I sell gear pumps on my web site and have tested them on our bench. Even the 3 gpm pump uses about 5A minimum without load. Our 6 GPM pump is rated 15A 12V. Somehow you are getting free lunch :) -- Bulent Aliev Enginegear Ft Lauderdale, FL 954 557-1019 954 784-5519 Fax http://www.enginegearonline.com --B_3182595777_4469039 Content-type: text/html; charset="US-ASCII" Content-transfer-encoding: quoted-printable Re: [FlyRotary] Re: EWP On 11/6/04 12:14 PM, &q= uot;Russell Duffy" <13brv3@bellsouth.net> wrote:

So I will add to Bulent's question - what will be the current draw at &nb= sp;25 gallons per minute when installed in a functioning cooling system? &nb= sp;
 
Ken Powell
 
 
I'm going to put a meter on mine, maybe today.  In the mean = time, below is an excerpt from one of Todd's posts that I found in the archi= ve.  Current is WAY low on the Davies Craig pump.  If I can verify= this, I'd say there's no problem running one of them when the alt fails. &n= bsp;
Cheers,
Rusty (mourning the departure of one of my fillings)
 
 
Hi Guy's
        I brought home a new mag tu= be & transmitter, which I tested first against a calibration standard, s= o I'm certain of it's accuracy. I ran a full set of tests tonight and was so= mewhat surprised at the results.

        I ran the first test with t= he Ford evap cores in the system, plumbed in parallel.
  • Max= flow 9.3 usg/m  35 l/m  
  • 12.07 v= olt battery supply voltage  
  • .49 amp= s current draw  
  • 1.8 amp= s max inrush current
&nb= sp;  Second test had no evap cores in th= e system. Simply recirced water through pump - engine - header tank - pump.<= BR>
  • max= flow 13.0 usg/m   49 l/m  
  • 12.06 v= olt battery supply voltage  
  • .37 amp= s current draw  
  • 3 amps = max inrush current.
 = ;  Third test, I plumbed in a set of GM (Harrison) evap cores in p= arallel, into the system. I hung them just below my mounted Ford cores, usin= g they same pipe sizes in an effort to have comparable test conditions.
  • max= flow 7.7 usg/m   29 l/m  
  • 12.4 vo= lts supply voltage (I hooked a trickle  charger to the battery)<= FONT FACE=3D"Verdana">  
  • .47 amp= s max current draw
 = ;  In each test configuration test results are with heater valve c= losed. Heater core added .5 usg/m in each case.
    In all of the above tests= the electronic pump controller was bypassed to give full battery voltage to= the pump. With the pump controller in use, as the water was cold well water= , controller had pump at minimum flow which was measured at .6 usg/m - 2.2 l= /m. I suppose I should have dipped the RTD probe into hot water to watch the= flow increase, however all test equipment is packed up and system is back t= ogether.



Hi Rusty, I have hard time believing these Amp draw figures? I sell gear pu= mps on my web site and have tested them on our bench. Even the 3 gpm pump us= es about 5A minimum without load. Our 6 GPM pump is rated 15A  12V. Som= ehow you are getting free lunch :)

--

Bulent Aliev
Enginegear
Ft Lauderdale, FL   
954 557-1019
954 784-5519 Fax

http://www.enginegearonline.com

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