X-Junk-Score: 10 [X] X-KAS-Score: 10 [X] From: "Doug Lomheim rv9flyer13b@gmail.com" Received: from pmg.Logan.com ([207.170.160.161] verified) by logan.com (CommuniGate Pro SMTP 6.4.0) with ESMTPS id 3847522 for flyrotary@lancaironline.net; Fri, 21 Feb 2025 19:38:51 -0500 Received: from pmg.Logan.com (localhost [127.0.0.1]) by pmg.Logan.com (Proxmox) with ESMTP id 9D1BD25EFE for ; Fri, 21 Feb 2025 19:38:51 -0500 (EST) Received-SPF: pass (gmail.com ... _spf.google.com: Sender is authorized to use 'rv9flyer13b@gmail.com' in 'mfrom' identity (mechanism 'include:_netblocks.google.com' matched)) receiver=pmg.Logan.com; identity=mailfrom; envelope-from="rv9flyer13b@gmail.com"; helo=mail-ot1-f42.google.com; client-ip=209.85.210.42 Received: from mail-ot1-f42.google.com (mail-ot1-f42.google.com [209.85.210.42]) by pmg.Logan.com (Proxmox) with ESMTPS for ; Fri, 21 Feb 2025 19:38:51 -0500 (EST) Received: by mail-ot1-f42.google.com with SMTP id 46e09a7af769-72720daed05so1366291a34.2 for ; Fri, 21 Feb 2025 16:38:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1740184724; x=1740789524; darn=lancaironline.net; h=to:date:message-id:subject:mime-version:from:from:to:cc:subject :date:message-id:reply-to; bh=nuJB9JrvY4Q8nWOUsFFBwdgdEz4BSN7vJwzt8yxIutA=; b=fVxInnLtTmHGEuRY01LPak70JmSuMV2WtU4h/oGBeDWqL79vujxtRoMd725X0+tyRl 2MKnoJONiA+T2o25a2ORutZdh+JxRXmhhd8MLQ8rfF5onWTqTNXTgbpqEz8x6dSWS/Rl kPDhXZyDxWA79ysf7dwda58bqe/4WcrqbbevI/EK9+g3ubLh31b6SBCMMOlNDKS+PqOO lOCkq/4fqFfiXwIhrnXdQPeWNck74GMYgS5eVMgGaHo6QK1ACTVoWpP5vzkMoCETEG/C xPI0TjA24+hSTJtLHVJet+fM7hi6tQQj1gL4Y4pgwVxhZS0muE6ckyv7nrNeNphaaAUo 8xaA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1740184724; x=1740789524; h=to:date:message-id:subject:mime-version:from:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=nuJB9JrvY4Q8nWOUsFFBwdgdEz4BSN7vJwzt8yxIutA=; b=a2f8axcnByj8XVTBvvKG6MK4PozYafdkU1mXNoFYqtxHCEwm7b5CW6XovuGktGzv4H h7w4pr8WteqiZ2Ny0bXk+1kL5X021YP+ChsDBY4H4S9uouKbGwul7XlU5mmMFJO57A8o IvyJqct2jTwbJmjVhLOKBBBHNNq/2ZmvkG8bazAnQUaIcoqkF3faI+vn9GBZYpo6O8JA oSbI4LPlPU6TzgRlvcg62yLpoHrw4NSKv6vz7ARskHUoOfjLsBfNFKBiFcsUdYi8fUbR nt8Bw1X15nTg0ebBCdRecZyy9tcocbXu8Zp9aLWwEyiUKwzNAhCGTN71HCPZCQlf/Stj X8/g== X-Gm-Message-State: AOJu0Yzd74XTWqCmzC+SXO4OfxpCbS9kG14xUsM+9jjFFzO9QGQ/palL 1aMNa/mQ+TyihNnD4JGpCfMMrEM4ymIBoGC1rTPJTZCSSRGfrZf5oNFgXHIl X-Gm-Gg: ASbGnctjvxqop0lQSR8QinwHfHhmGE9vo+3PkUyK8X9pYBEETK307srvJNmf+bfGtJJ SyYp69CRq8ONsvADVllFjuIKNXfZYsCn3Sc+NMMwBI4nwCJp/dwFMCuO7cmNfJ2sRrHWLeHtvU6 7tc2tWxs1d65aFEM1LmTv14t3DsgblmALQD36dFJUuhoK6fPnhRS/oczL1mWW3F3R5h4Fx9DCmy 8QirCJiVp4MJO2jkNuYNAU48EyyiVaVY4FeVvwgXT58VEerCqJS1jLGVSbpccTy4RP5GyQmf3qz gulyKuuhnb39WuoZF/z86cL9+EPGzZfdFIg1mMs= X-Google-Smtp-Source: AGHT+IFbQppwtRlJxPCk0wi7XTDZDP0FOgRNey0NY9j0ibIALnKJsqpNXKlIhJA0urL21mGkvrb1Ug== X-Received: by 2002:a05:6830:6d17:b0:727:1041:4202 with SMTP id 46e09a7af769-7274c24e549mr5674010a34.21.1740184724243; Fri, 21 Feb 2025 16:38:44 -0800 (PST) Received: from smtpclient.apple ([158.62.143.114]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-727359dd714sm1938923a34.64.2025.02.21.16.38.43 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 21 Feb 2025 16:38:43 -0800 (PST) X-Google-Original-From: Doug Lomheim Content-Type: multipart/alternative; boundary="Apple-Mail=_835830C0-19E8-4C76-BF3A-B19A6DC62828" Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.15\)) Subject: RE: [FlyRotary] Fuel injection Diagram Message-Id: Date: Fri, 21 Feb 2025 18:38:42 -0600 To: Rotary Motors in Aircraft X-Mailer: Apple Mail (2.3654.120.0.1.15) X-SPAM-LEVEL: Spam detection results: 0 AWL 0.090 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DKIM_SIGNED 0.1 Message has a DKIM or DK signature, not necessarily valid DKIM_VALID -0.1 Message has at least one valid DKIM or DK signature DKIM_VALID_AU -0.1 Message has a valid DKIM or DK signature from author's domain DKIM_VALID_EF -0.1 Message has a valid DKIM or DK signature from envelope-from domain DMARC_PASS -0.1 DMARC pass policy FREEMAIL_FROM 0.001 Sender email is commonly abused enduser mail provider GB_FREEMAIL_NUM 1 Freemail spammy address HTML_MESSAGE 0.001 HTML included in message RCVD_IN_MSPIKE_H3 0.001 Good reputation (+3) RCVD_IN_MSPIKE_WL 0.001 Mailspike good senders SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record --Apple-Mail=_835830C0-19E8-4C76-BF3A-B19A6DC62828 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Le Roux: I purchased Dennis Haverlah=E2=80=99s nice RV-7A the end of = Sept. and now have about 5.6 of the 930 hrs. on it. Dennis followed = Tracy=E2=80=99s initial installation where the left tank feeds directly = to two (2) filters and then to two (2) Walbro type fuel pumps, located = on the floor of the cockpit. The single AN-6 alum. line from the left = tank kits a TEE and runs to the filters and pumps (in line), and coming = out of the pumps it again Tee=E2=80=99s into a single AN6 which = penetrates the firewall and goes to an adjustable fuel regulator. =46rom = the regulator it flows to the fuel rails, and returns to the left tank. = Dennis connected the right tank to the left tank via another AN-6 line, = and there is a facet pump on the floor of the PAX side, and fuel is = therefore transferred when needed from right to left tanks. =20 Since the RV-7A is a side by side fuselage, the one negative I=E2=80=99ve = seen with this system is that as fuel is burned down there is a tendency = for the right tank get a bit lighter than the left tank, since my weight = is left of center, and fuel is also transferred to the left which then = tends to also be heavier than the right for much of a flight. It I were = doing this again, I therefore would draw from the right tank and feed = from the left, which I think would help offset my weight and create a = heavy wing situation on long cross country trips. In this configuration, there also is NOT a way to mechanically turn OFF = the fuel to the filters / pumps, and it therefore can only be done by = turning off the fuel pumps. Om my 9A =E2=80=9Cproject=E2=80=9D, I=E2=80=99= m using an Adair valve (w/out auto return), and I initially set it up to = pull fuel from the left or right (as selected), and it returns (off the = fuel rail) to the left tank. With either configuration the pilot has to = make sure too much fuel isn=E2=80=99t transferred or it will flow over = the side out the vent line or out a loose fitting tank cap. Since I now know about the light right wing issue, I=E2=80=99m = considering changing the fuel rail return line to go to my right tank... Doug=20 RV-7A Renesis flying =20 RV-9A RX-7 / 13B w/4.2 hrs. ground runs=20 =20 -----Original Message----- From: Rotary motors in aircraft=20 Sent: Friday, February 21, 2025 10:15 AM To: Rotary motors in aircraft Subject: [FlyRotary] Fuel injection Diagram=20 Hi : Do somebody have a schematic drawing ? Of a typical low wing = experimental aircraft fuel system to the 13B. Can=E2=80=99t find good detail info. The feed from the wings to the high pressure fuelpumps. Where to place the low pressure fuel pumps and then to fuel injection = pumps. Must i do a header tank ? or not.Must the high pressure pumps be inside = or outside on the firewall? Regards Le Roux Sent from my iPhone Le Roux Breytenbach= --Apple-Mail=_835830C0-19E8-4C76-BF3A-B19A6DC62828 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
Le Roux: I purchased Dennis Haverlah=E2=80=99s nice = RV-7A the end of Sept. and now have about 5.6 of the 930 hrs. on it. =  Dennis followed Tracy=E2=80=99s initial installation where the = left tank feeds directly to two (2) filters and then to two (2) Walbro = type fuel pumps, located on the floor of the cockpit.  The = single AN-6 alum. line from the left tank kits a TEE and runs to the = filters and pumps (in line), and coming out of the pumps it again = Tee=E2=80=99s into a single AN6 which penetrates the firewall and goes = to an adjustable fuel regulator.  =46rom the regulator it flows to = the fuel rails, and returns to the left tank.  Dennis = connected the right tank to the left tank via another AN-6 line, and = there is a facet pump on the floor of the PAX side, and fuel = is therefore transferred when needed from right to left tanks. =  

Since the = RV-7A is a side by side fuselage, the one negative I=E2=80=99ve seen = with this system is that as fuel is burned down there is a tendency = for the right tank get a bit lighter than the left tank, since my = weight is left of center, and fuel is also transferred  to the = left which then tends to also be heavier than the right for much of a = flight.  It I were doing this again, I therefore would draw from = the right tank and feed from the left, which I think would help offset = my weight and create a heavy wing situation on long cross country = trips.

In = this configuration, there also is NOT a way to mechanically turn = OFF the fuel to the filters / pumps, and it therefore can only be done = by turning off the fuel pumps.  Om my 9A =E2=80=9Cproject=E2=80=9D= , I=E2=80=99m using an Adair valve (w/out auto return), and I = initially set it up to pull fuel from the left or right = (as selected), and it returns (off the fuel rail) to the left tank. =  With either configuration the pilot has to make sure too much = fuel isn=E2=80=99t transferred or it will flow over the side out = the vent line or out a loose fitting tank cap.

Since I = now know about the light right wing issue, I=E2=80=99m = considering changing the fuel rail return line to go to my right = tank...

Doug 

RV-7A = Renesis flying  
RV-9A RX-7 / = 13B w/4.2 hrs. ground runs 

  =   








-----Original = Message-----
From: Rotary motors in = aircraft 
Sent: Friday, February = 21, 2025 10:15 AM
To: Rotary motors in = aircraft <flyrotary@lancaironline.net>
Subject: [FlyRotary] Fuel injection = Diagram 

Hi : Do somebody have a schematic = drawing ? Of a typical low wing experimental aircraft fuel system to the = 13B.
Can=E2=80=99t find good detail = info.
The feed from the wings to the high = pressure fuelpumps.
Where to place the low = pressure fuel pumps and then to fuel injection pumps.
Must i do a header tank ? or not.Must = the high pressure pumps be inside or outside on the firewall?

Regards Le Roux

Sent from my iPhone
Le Roux Breytenbach= --Apple-Mail=_835830C0-19E8-4C76-BF3A-B19A6DC62828--