X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=BpPjPrf5 c=1 sm=1 tr=0 a=ccA1FXCYYycThNn3AvCQpg==:117 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=x7bEGLp0ZPQA:10 a=A-0mRrAPPO4A:10 a=Jdjhy38mL1oA:10 a=UKPAHat8AAAA:8 a=Ia-xEzejAAAA:8 a=jThZ7_-JAAAA:8 a=9Z78Hd4c9LDtd3MnBr4A:9 a=QEXdDO2ut3YA:10 a=7Neee5olXpqQPVnp_EkA:9 a=PqYp8DuDTWz7N56S:21 a=Fc6xXSS-RxGHxrvp76Qp:22 a=Urk15JJjZg1Xo0ryW_k8:22 a=NVbvhy2gKIdozzgvQOKv:22 From: "Charlie England ceengland7@gmail.com" Received: from mail-io1-f49.google.com ([209.85.166.49] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 13406338 for flyrotary@lancaironline.net; Mon, 20 Jan 2020 11:23:56 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.166.49; envelope-from=ceengland7@gmail.com Received: by mail-io1-f49.google.com with SMTP id h8so34310701iob.2 for ; Mon, 20 Jan 2020 08:23:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=f3JBIeLtvKjKxidsn6j1RKZ8Q1o7Uwo0db9YMlUTRL4=; b=NOC5Y7vA5AWSzZYVA60I4P+2mxlxFCIFN3ilCWXqtX2Cq7joh0KyxzUawbwm3/uq+A TURxzq0hLi3MQ4UjDIBiW9KpKn9RzKSClFWpJ8Rl5WZjqa6uBYbXgUv1itDjWFxMz39v lWD3bEhra7vEjT214DUNRZTqXP4CgNBY1KcsPdnDgdJq6awiZR6SdV4PQOhXLbR+f0O6 S+KSqOSyTwhVg4iE/ApShgYkByA6CM96g1FvGfCl0Lk8XEwao7gzJiZU3Coyp1tk5zGd awdLA/nAW6mUde6c4RDEOfDhW6dr9XORge1XeSowuABf5e5Fvo6KvKQZ4hMvMlfoTikf MzCQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=f3JBIeLtvKjKxidsn6j1RKZ8Q1o7Uwo0db9YMlUTRL4=; b=XbQImUhYfIA2B1Lq0DhoY/fPTcGVDFu4TjrzOReFa+7bZWObi7rQbYRMagtfOquU+s UNHhwFFiH9IwGWuY9s0UhiTm7At0jbGDXOEiDo2Kjp85N/ZAQQ20iDBQJLgZpFRPv863 SPknm2xziym2ysEqpRDUa0hWjpOXUfLPcq5Dt+NCRYCqpBptdrhGWkltwly9bzU8ycri I/1JqNcJpLPwj6jkTs27x1E09MTF4cNaCq6i+esBvm+WMb1TTOads3C/rPKZkPXNq+QI RM8D7VFo58ppDfkBUv0Q+HyZU5SbF9b5783T2mmfwtpEgWye/qPRP08GbG8YFyxdriBc vsoQ== X-Gm-Message-State: APjAAAXzjvJM9coCc1gRHX5iv9oVaVB11hFq+To8VvYcir9xgdXWSIap pcxyiLKqU+KRhh7WQbOCpkPpLxlT5ztCIGn4pwnHsA== X-Google-Smtp-Source: APXvYqzU6I0+rNKtlY8LtC57evy5BXoQrK5j7gP38AmSBZl6tMqBBLzU/etKmOtY185SzmkCcjX2PnutQJ317X8SNmw= X-Received: by 2002:a6b:3bd2:: with SMTP id i201mr41755811ioa.145.1579537419316; Mon, 20 Jan 2020 08:23:39 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: Date: Mon, 20 Jan 2020 10:20:57 -0600 Message-ID: Subject: Re: [FlyRotary] Fuel System Design for High wing Aircraft To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="000000000000c9b5bf059c94b677" --000000000000c9b5bf059c94b677 Content-Type: text/plain; charset="UTF-8" The holy grail is a returnless system, to finish out the automotive style injection. :-) Ed did use a very small header tank; logic was that the recirculated fuel never stayed in the tank long enough to begin to heat up. But he didn't vent the header back to either main tank. I always thought that the unvented header was going to be the cause of his next 'glider' flight. If you add a vent line back to the main tank, it'll work safely. (My BD4 had a similar system, but for a different purpose; the BD main tanks had a tendency to unport in uncoordinated flight.) There are other options, too. We can talk. On Mon, Jan 20, 2020 at 7:58 AM Bobby J. Hughes bhughes@qnsi.net < flyrotary@lancaironline.net> wrote: > What is the best method for handling return fuel in a high wing? Fuel > return to a small header tank sized to keep fuel temperatures low? I think > Ed Anderson may have used a small header in his RV6. > > > > Asking for a friend with an airplane addiction. > > > > Bobby > > > *Disclaimer* > > The information contained in this communication from the sender is > confidential. It is intended solely for use by the recipient and others > authorized to receive it. If you are not the recipient, you are hereby > notified that any disclosure, copying, distribution or taking action in > relation of the contents of this information is strictly prohibited and may > be unlawful. > > This email has been scanned for viruses and malware, and may have been > automatically archived by *Mimecast Ltd*, an innovator in Software as a > Service (SaaS) for business. Providing a *safer* and *more useful* place > for your human generated data. Specializing in; Security, archiving and > compliance. To find out more Click Here > . > --000000000000c9b5bf059c94b677 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
The= holy grail is a returnless system, to finish out the automotive style inje= ction. :-)

=
Ed did use a v= ery small header tank; logic was that the recirculated fuel never stayed in= the tank long enough to begin to heat up. But he didn't vent the heade= r back to either main tank. I always thought that the unvented header was g= oing to be the cause of his next 'glider' flight. If you add a vent= line back to the main tank, it'll work safely. (My BD4 had a similar s= ystem, but for a different purpose; the BD main tanks had a tendency to unp= ort in uncoordinated flight.)

There are other options, too. We can talk.

On Mon, Jan 20, 2020= at 7:58 AM Bobby J. Hughes bhughes@qnsi.net <flyrotary@lancaironline.net> wrote:
<= blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-l= eft:1px solid rgb(204,204,204);padding-left:1ex">
<= p class=3D"MsoNormal">What is the best method for handling return fuel in a= high wing? Fuel return to a small header tank sized to keep fuel temperatu= res low? I think Ed Anderson may have used a small header in his RV6.

=C2=A0

Asking for a friend with an airplane addiction.

=C2=A0

Bobby=



Disclaimer

The information contained in this = communication from the sender is confidential. It is intended solely for us= e by the recipient and others authorized to receive it. If you are not the = recipient, you are hereby notified that any disclosure, copying, distributi= on or taking action in relation of the contents of this information is stri= ctly prohibited and may be unlawful.

This email has been scanned for= viruses and malware, and may have been automatically archived by Mimeca= st Ltd, an innovator in Software as a Service (SaaS) for business. Pro= viding a safer and more useful place for your human generated= data. Specializing in; Security, archiving and compliance. To find out mo= re Click He= re.

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