Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Mon, 14 Oct 2002 20:03:30 -0400 Message-ID: X-Original-Return-Path: Received: from corpprd-pxy2.canfor.ca ([198.162.160.3] verified) by logan.com (CommuniGate Pro SMTP 4.0b9) with ESMTP id 1805199 for flyrotary@lancaironline.net; Mon, 14 Oct 2002 12:25:18 -0400 Received: from exchange.canfor.ca (mail.canfor.ca [198.162.162.49]) by corpprd-pxy2.canfor.ca (Build 101 8.9.3/NT-8.9.3) with ESMTP id JAA00286 for ; Mon, 14 Oct 2002 09:23:28 -0700 Received: by exchange.canfor.ca with Internet Mail Service (5.5.2653.19) id <4GVWLBG7>; Mon, 14 Oct 2002 09:25:06 -0700 X-Original-Message-ID: <42FD577DCE14D411B5860090273F466240FCA3@mailman.canfor.ca> From: "Bartrim, Todd" X-Original-To: "'flyrotary@lancaironline.net'" Subject: RE: [FlyRotary] Re: EWP water pump X-Original-Date: Mon, 14 Oct 2002 09:25:13 -0700 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C2739E.45C0B780" 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. ------_=_NextPart_001_01C2739E.45C0B780 Content-Type: text/plain > > I thought that in a closed system there was no head pressure. > > As Tracy has said, the pump sees system friction as head pressure, however by pumping from a container, through the system and into a container we will see those pressures plus those induced by the container that we are drawing from. Even if the level in this container was kept constant, to provide constant head to the intake, while the output was measured, I still doubt that we could get any meaningful data. I still think that the only meaningful data would be obtained by using a non-restrictive flowmeter in a closed system. I will attempt to get this, however I think that all the numbers that can be obtained will mean less than the answer to a simple question: "Does it work?" yes or no. S. Todd Bartrim Turbo 13B rotary powered RX-9endurance (FWF) C-FSTB (reserved) http://www3.telus.net/haywire/RV-9/C-FSTB.htm ------_=_NextPart_001_01C2739E.45C0B780 Content-Type: text/html Content-Transfer-Encoding: quoted-printable RE: [FlyRotary] Re: EWP water pump

    > I thought that in a closed system = there was no head pressure. =20


        As Tracy has said, the pump sees system friction as head = pressure, however by pumping from a container, through the system and = into a container we will see those pressures plus those induced by the = container that we are drawing from. Even if the level in this container = was kept constant, to provide constant head to the intake, while the = output was measured, I still doubt that we could get any meaningful = data.

        I still think that the only meaningful data would be = obtained by using a non-restrictive flowmeter in a closed system. I = will attempt to get this, however I think that all the numbers that can = be obtained will mean less than the answer to a simple question: = "Does it work?" yes or no.

S. Todd Bartrim
Turbo 13B rotary powered
RX-9endurance (FWF)
C-FSTB (reserved)

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