X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-pv0-f180.google.com ([74.125.83.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTPS id 5032570 for flyrotary@lancaironline.net; Sat, 25 Jun 2011 19:05:49 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.83.180; envelope-from=rwstracy@gmail.com Received: by pvc21 with SMTP id 21so2175904pvc.25 for ; Sat, 25 Jun 2011 16:05:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:subject:references:from:content-type:x-mailer :in-reply-to:message-id:date:to:content-transfer-encoding :mime-version; bh=jSA2bJj9SFDmuG9fvS/DaHoNByQJatEVNmToDf57784=; b=l78g+I2CtDNsEfXyiFD9NaY+fcXciuwlLqLvC/mvVws8ykoL+qBgVG9DCe5vntxrXD EzGUhPuMTg2grqM/+T74yKEsmuo2PUPqrHF1e2hOE2r27OT7tb7aAkow0Px+tasIu3bl zL/2IBTsjqtRE+F9wt74H9E0Om7i3VBZac9tY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:references:from:content-type:x-mailer:in-reply-to :message-id:date:to:content-transfer-encoding:mime-version; b=uj61vjkOkVzpwCRURp/P1lxmrv8dquoNrrjaVJp4WPh4DR+bsmLPH9g7/WgKM8GnhI JgkJKA5HygyscdnGCnMeWPbDME9WmjVod/09aCgMlDLR/K9edSiBKGL6BYrXfrie10l+ Pz7c9B1yaUPeaUUHqpWjDSsRiuXAxQk/uBZWk= Received: by 10.68.60.67 with SMTP id f3mr2378909pbr.380.1309043112450; Sat, 25 Jun 2011 16:05:12 -0700 (PDT) Return-Path: Received: from [75.220.44.246] (246.sub-75-220-44.myvzw.com [75.220.44.246]) by mx.google.com with ESMTPS id k4sm3132945pbl.27.2011.06.25.16.05.09 (version=TLSv1/SSLv3 cipher=OTHER); Sat, 25 Jun 2011 16:05:11 -0700 (PDT) Subject: Re: [FlyRotary] Re: Floscan orientation, fuel line size References: From: Tracy Content-Type: multipart/alternative; boundary=Apple-Mail-11-23428986 X-Mailer: iPad Mail (8F191) In-Reply-To: Message-Id: <0F649DED-D1E3-4694-89C4-3EE304616DA8@gmail.com> Date: Sat, 25 Jun 2011 17:05:07 -0600 To: Rotary motors in aircraft Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (iPad Mail 8F191) --Apple-Mail-11-23428986 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii At first I was thinking there wasn't much difference between -4 lines and th= e 5/16 I was using but on second thought, -4 is only 3/16 ID compared to my 5= /16 ID which is a big cross sectional difference. I am flowing 30 GPH at fu= ll power and rich mixture though which is 50% more than a 13B would. Tracy Sent from my iPad On Jun 25, 2011, at 9:36 AM, Charlie England wrote= : > Thanks, Tracy. My pumps and the regulator are on the floor between spar & f= irewall (RV-7), & it's an easy path up the diagonal brace on the firewall, w= ith the sensor at roughly mid point. A second look a the firewall, & the ang= le is closer to 60 degrees (measured it:55*). This spot may not work anyway= ; it's looking like rudder pedals may hit it or the fuel line if run there.=20= >=20 > I think I'll take a closer look at -4 lines, though. >=20 > Charlie >=20 > On 6/25/2011 9:43 AM, Tracy wrote: >>=20 >> Just guessing on Q1 but I think it would work OK in that orientation. >>=20 >> I used 5/16" fuel line on my 231 floscan sensor but it's in automotive EFI= rubber type plumbing. >>=20 >> Tracy >>=20 >> Sent from my iPad >>=20 >> On Jun 25, 2011, at 8:14 AM, Charlie England wr= ote: >>=20 >>> OK, 2 questions.=20 >>>=20 >>> 1. For those using Floscan fuel flow transducers: >>>=20 >>> Anyone have a floscan 201 sensor that's working ok while mounted in othe= r than a horizontal position? My most convenient location would have the fue= l path flowing up at a 45 degree angle. In addition, the mounting can have t= he wires 'up', but mounting would be a bit more convenient with the wires po= inting horizontally. >>>=20 >>> 2. While researching Q1, I found a note from the guy who makes Airflow P= erformance fuel injection systems for Lycs (they run at around 15-30 psi), r= ecommending 1/4" (AN-4) fuel lines firewall forward to minimize fuel heating= & vapor lock. I've already been tempted to consider this instead of -6 (sav= es weight, running lines is easier, etc) because the injection pumps & autom= otive systems use small diameter lines, but was reluctant to go against 'con= vention'. Has anyone who's flying an injected rotary used -4 fuel lines to f= eed the engine? >>>=20 >>> Thanks, >>>=20 >>> Charlie >>=20 >=20 --Apple-Mail-11-23428986 Content-Transfer-Encoding: 7bit Content-Type: text/html; charset=utf-8
At first I was thinking there wasn't much difference between -4 lines and the 5/16 I was using but on second thought, -4 is only 3/16 ID compared to my 5/16 ID which is a big cross sectional difference.  I am flowing 30 GPH at full power and rich mixture though which is 50% more than a 13B would.

Tracy

Sent from my iPad

On Jun 25, 2011, at 9:36 AM, Charlie England <ceengland@bellsouth.net> wrote:

Thanks, Tracy. My pumps and the regulator are on the floor between spar & firewall (RV-7), & it's an easy path up the diagonal brace on the firewall, with the sensor at roughly mid point. A second look a the firewall, & the angle is closer to 60 degrees (measured it:55*). This spot may not  work anyway; it's looking like rudder pedals may hit it or the fuel line if run there.

I think I'll take a closer look at -4 lines, though.

Charlie

On 6/25/2011 9:43 AM, Tracy wrote:
Just guessing on Q1 but I think it would work OK in that orientation.

I used 5/16" fuel line on my 231 floscan sensor but it's in automotive EFI rubber type plumbing.

Tracy

Sent from my iPad

On Jun 25, 2011, at 8:14 AM, Charlie England <ceengland@bellsouth.net> wrote:

OK, 2 questions.

1. For those using Floscan fuel flow transducers:

Anyone have a floscan 201 sensor that's working ok while mounted in other than a horizontal position? My most convenient location would have the fuel path flowing up at a 45 degree angle. In addition, the mounting can have the wires 'up', but mounting would be a bit more convenient with the wires pointing horizontally.

2. While researching Q1, I found a note from the guy who makes Airflow Performance fuel injection systems for Lycs (they run at around 15-30 psi), recommending 1/4" (AN-4) fuel lines firewall forward to minimize fuel heating & vapor lock. I've already been tempted to consider this instead of -6 (saves weight, running lines is easier, etc) because the injection pumps & automotive systems use small diameter lines, but was reluctant to go against 'convention'. Has anyone who's flying an injected rotary used -4 fuel lines to feed the engine?

Thanks,

Charlie

--Apple-Mail-11-23428986--