Return-Path: <13brv3@bellsouth.net> Received: from imf21aec.mail.bellsouth.net ([205.152.59.69] verified) by logan.com (CommuniGate Pro SMTP 4.3c2) with ESMTP id 763451 for flyrotary@lancaironline.net; Mon, 28 Feb 2005 16:27:25 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.69; envelope-from=13brv3@bellsouth.net Received: from rd ([65.6.194.9]) by imf21aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050228212636.BZMW2296.imf21aec.mail.bellsouth.net@rd> for ; Mon, 28 Feb 2005 16:26:36 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: [FlyRotary]actual water flow was Belt rumnations; soliciting Opinions of racers please.... Date: Mon, 28 Feb 2005 15:27:19 -0600 Message-ID: <004601c51ddc$486f9510$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0047_01C51DA9.FDD52510" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0047_01C51DA9.FDD52510 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable What we need is some expire mental measurement of flow rate under actual conditions (which will involve a flow meter in the system) and then, with the engine at rest (the pump is the only moving part in the system), we can see how much current it takes to achieve that flow rate. Sadly, the pivotal instrument, a flow meter that doesn't disturb the system too much, is probably not available. If someone could come up with a flow meter in a 1.25" line, we could do some expirements. Other than that, we're guessing at numbers like PL and the bumblebee folks ... Jim S. I agree. Everyone keeps talking about all this head pressure that the = pump is having to face. It must be stealth pressure, because my pressure = gauge doesn't see it. =20 As I type, I'm also looking for a suitable flow meter, and I'm open for suggestions. The plan will be to rig this into my system, and find out = once and for all what sort of flow I've got with both the mechanical, and = EWP. I doubt there's any way to have this in place during flight, so Ernest = will say it's not valid :-) =20 So don't make this too painful, but lets here some options for suitable meters. =20 Rusty (Todd has already done all this of course) ------=_NextPart_000_0047_01C51DA9.FDD52510 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

What we
need is some expire mental measurement of = flow rate=20 under actual
conditions (which will involve a flow meter in the = system) and=20 then,
with the engine at rest (the pump is the only moving part in=20 the
system), we can see how much current it takes to achieve that = flow=20 rate.
Sadly, the pivotal instrument, a flow meter that doesn't = disturb=20 the
system too much, is probably not available.  If someone = could come=20 up
with a flow meter in a 1.25" line, we could do some = expirements.
Other=20 than that, we're guessing at numbers like PL and the bumblebee
folks = ... Jim=20 S.

I=20 agree.  Everyone keeps talking about all this head pressure that = the pump=20 is having to face.  It must be stealth pressure, because my = pressure gauge=20 doesn't see it. 

As I type, = I'm also=20 looking for a suitable flow meter, and I'm open for suggestions.  = The plan=20 will be to rig this into my system, and find out once and for = all what=20 sort of flow I've got with both the mechanical, and = EWP.   I=20 doubt there's any way to have this in place during flight, so Ernest = will say=20 it's not valid :-) 

So don't = make this too=20 painful, but lets here some options for suitable meters. =20

Rusty = (Todd has already=20 done all this of course)

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