X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf23aec.mail.bellsouth.net ([205.152.59.71] verified) by logan.com (CommuniGate Pro SMTP 4.3.2) with ESMTP id 968121 for flyrotary@lancaironline.net; Mon, 30 May 2005 15:45:55 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.71; envelope-from=13brv3@bellsouth.net Received: from ibm66aec.bellsouth.net ([65.6.194.9]) by imf23aec.mail.bellsouth.net with ESMTP id <20050530194509.XDDC8541.imf23aec.mail.bellsouth.net@ibm66aec.bellsouth.net> for ; Mon, 30 May 2005 15:45:09 -0400 Received: from rd ([65.6.194.9]) by ibm66aec.bellsouth.net with ESMTP id <20050530194509.BGGO5308.ibm66aec.bellsouth.net@rd> for ; Mon, 30 May 2005 15:45:09 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: will EFI pumps pump air Date: Mon, 30 May 2005 14:45:29 -0500 Message-ID: <001301c56550$22672020$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0014_01C56526.39911820" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0014_01C56526.39911820 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable One thing I'm considering is to just use the regular pumps to transfer fuel. If you plumb the tanks to a fuel selector, then when you select the aux side the excess flow will end up in what's now your primary tank. This is probably a step better than having one pump per tank. The only negative I see is not being able to run the tank out without killing the engine. With all the tanks you're talking about having, that's probably = not a big deal, but the RV-3 only has two 15 gallon tanks, so using every = last gallon is useful (if I ever went anywhere).=20 I've seen the 1st idea work in certified planes; the 2nd idea is wild speculation. Thanks, but I have enough wild speculation of my own :-) Charlie (Wish you could have made it up here this weekend; if you get bored & need a place to fly come on up for lunch sometime.) Roger. It might happen some day. =20 Rusty =20 ------=_NextPart_000_0014_01C56526.39911820 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

One thing I'm considering is to just use the regular = pumps to=20 transfer
fuel. If you plumb the tanks to a fuel selector, then when = you=20 select
the aux side the excess flow will end up in what's now your=20 primary
tank.

This is = probably a step=20 better than having one pump per tank.  The only negative I see is = not being=20 able to run the tank out without killing the engine.  With all the = tanks=20 you're talking about having, that's probably not a big deal, but the = RV-3 only=20 has two 15 gallon tanks, so using every last gallon is useful (if I ever = went=20 anywhere).

I've seen the 1st idea work in certified planes; the 2nd idea is=20 wild
speculation.

Thanks, but I have enough = wild=20 speculation of my own :-)

Charlie
(Wish you could have = made it=20 up here this weekend; if you get bored &
need a place to fly come = on up=20 for lunch sometime.)

Roger.  It might = happen some=20 day. 

Rusty

 

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