Return-Path: Received: from fed1rmmtao03.cox.net ([68.230.241.36] verified) by logan.com (CommuniGate Pro SMTP 4.3c2) with ESMTP id 760340 for flyrotary@lancaironline.net; Sat, 26 Feb 2005 09:03:58 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.36; envelope-from=dale.r@cox.net Received: from smtp.west.cox.net ([172.18.180.52]) by fed1rmmtao03.cox.net (InterMail vM.6.01.04.00 201-2131-118-20041027) with SMTP id <20050226140311.IKAH1282.fed1rmmtao03.cox.net@smtp.west.cox.net> for ; Sat, 26 Feb 2005 09:03:11 -0500 X-Mailer: Openwave WebEngine, version 2.8.15 (webedge20-101-1103-20040528) From: Dale Rogers To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: fuel flow Date: Sat, 26 Feb 2005 9:03:12 -0500 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=____1109426592111_SVr5Ng0Fpp" Message-Id: <20050226140311.IKAH1282.fed1rmmtao03.cox.net@smtp.west.cox.net> This is a multi-part message in MIME format. ------=____1109426592111_SVr5Ng0Fpp Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit > > From: Jim Sower > Date: 2005/02/25 Fri PM 02:12:46 EST > To: "Rotary motors in aircraft" > Subject: [FlyRotary] Re: fuel flow > <... introduce a new wrinkle ...> > > Not really new. Solve that little issue with what is really the best design. To wit: > Draw from Right wing (via sump if you like) > Return to Right wing (run return pretty far outboard - at least past the first baffle) > Have a Facet transfer from Left wing to Right wing. > Put a one or two minute timer on transfer pump if you like to prevent forgetting it and overflowing right tank (I plan to have 3-pos xfer switch ON - OFF - Momentary ON so that I have a choice of timer controlled or pilot controlled transfer. It has the additional (very important IMO) feature of being able to transfer Left tank bone dry. I am a lot more comfortable late in the flight knowing that every drop of gas on board is in the SELECTED tank. ? Go ahead - ask my why I feel so strongly about that :o) ... Jim S. Jim I can understand the latter concern. Nevertheless, I have a couple of concerns regarding the facet pump. How does one check it's functionality in pre-flight? Is it noisy enough that turning it on results in instant recognition? It's also a single point of failure that could leave me with a strake full of gas that I can't get at. (I suspect this list has had this part of the discussion before, too. I oughta go search the archives.) Dale R. COZY MkIV-R13B #1254 Ch's 4, 5 & 23 in-progress ------=____1109426592111_SVr5Ng0Fpp Content-Type: text/html; charset=us-ascii; name="reply" Content-Disposition: inline; filename="reply"

<... introduce a new wrinkle ...>

Not really new. Solve that little issue with what is really the best design. To wit:
Draw from Right wing (via sump if you like)
Return to Right wing (run return pretty far outboard - at least past the first baffle)
Have a Facet transfer from Left wing to Right wing.
Put a one or two minute timer on transfer pump if you like to prevent forgetting it and overflowing right tank (I plan to have 3-pos xfer switch ON - OFF - Momentary ON so that I have a choice of timer controlled or pilot controlled transfer. It has the additional (very important IMO) feature of being able to transfer Left tank bone dry. I am a lot more comfortable late in the flight knowing that every drop of gas on board is in the SELECTED tank.

Go ahead - ask my why I feel so strongly about that :o) ... Jim S.

Dale Rogers wrote:

Jim Sower <canarder@frontiernet.net> wrote:

We've already discussed this too much - it's all been said more 
than once ... Jim S.


Jim,

   Indeed it has ... but you did introduce a new wrinkle 
(for me, anyway - and I've been on the list, what, three 
years?): the concern about pumping air from a "dry" tank 
into the fuel rail.  Since my fuel system, when I get that 
far, is pretty much like the Parmalee system,

     http://www.marcnadine.com/Menu.html

and I planned to use "both" on takeoff and landing, this 
is some concern to me.  

   It's defininely something I want to experiment with on 
my test cell.

Dale R.
COZY MkIV #1254

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

>>  Homepage:  http://www.flyrotary.com/

>>  Archive:   http://lancaironline.net/lists/flyrotary/List.html

------=____1109426592111_SVr5Ng0Fpp--