Return-Path: Received: from access.aic-fl.com ([204.49.76.2] verified) by logan.com (CommuniGate Pro SMTP 4.3c2) with ESMTP id 768128 for flyrotary@lancaironline.net; Thu, 03 Mar 2005 09:16:41 -0500 Received-SPF: none receiver=logan.com; client-ip=204.49.76.2; envelope-from=unicorn@gdsys.net Received: from b9k4u9 (unverified [204.49.76.119]) by access.aic-fl.com (Rockliffe SMTPRA 4.5.6) with SMTP id for ; Thu, 3 Mar 2005 08:10:39 -0600 Message-ID: <000801c5200b$bf69acb0$774c31cc@b9k4u9> From: "Richard Sohn" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: EWP showdown Date: Thu, 3 Mar 2005 08:12:02 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0005_01C51FC8.AE0105B0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0005_01C51FC8.AE0105B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi WP world, as far as I know, same pumps in series do not increase flow rate. FWIW Richard Sohn N-2071U ----- Original Message -----=20 From: Jim Sower=20 To: Rotary motors in aircraft=20 Sent: Wednesday, March 02, 2005 8:46 PM Subject: [FlyRotary] Re: EWP showdown I was hoping to use them like fuel pumps - both for takeoff and = landing, one or the other enroute ... Russell Duffy wrote: <... would give me 3 pumps in series ...> Why do they have to be in series? Don't ANY of these folks make a viable check valve? It's just the easiest way to do the test. BTW, I was reviewing some = old EWP posts today, and noticed that Bob tested his pumps in series, = and parallel, and found that series had a higher flow rate. That might = be specific to his pumps, rather than a general rule, but the point was = that parallel isn't necessarily better. =20 Cheers, Rusty (can't parallel park either) >> Homepage: http://www.flyrotary.com/ >> Archive: http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_000_0005_01C51FC8.AE0105B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi WP world,

as far as I know, same pumps in series = do not=20 increase flow rate.

FWIW

Richard Sohn
N-2071U

----- Original Message -----
From:=20 Jim=20 Sower
To: Rotary motors in = aircraft

Sent: Wednesday, March 02, 2005 = 8:46=20 PM

Subject: [FlyRotary] Re: EWP=20 showdown

I was hoping to use them like fuel pumps - both for = takeoff and=20 landing, one or the other enroute ...

Russell Duffy wrote:

<... would give me 3 pumps in series = ...>
Why do=20 they have to be in series? Don't ANY of these folks make = a
viable=20 check valve?

It's = just the=20 easiest way to do the test. BTW, I was reviewing some old EWP = posts=20 today, and noticed that Bob tested his pumps in series, and = parallel, and=20 found that series had a higher flow rate. That might be = specific to=20 his pumps, rather than a general rule, but the point was that = parallel isn't=20 necessarily better.

Cheers,

Rusty (can't=20 parallel park either)

>> Homepage: http://www.flyrotary.com/ >> Archive: = http://lancaironline.net/lists/flyrotary/List.html

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