X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 23 Mar 2009 12:59:09 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-banded.atl.sa.earthlink.net ([209.86.89.70] verified) by logan.com (CommuniGate Pro SMTP 5.2.13) with ESMTP id 3555825 for lml@lancaironline.net; Sun, 22 Mar 2009 18:28:29 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.70; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=WA9RCxfvwtZUrZbAGpydWP/guBErY1OYQstfsUskQagFX0EQcHgDp/2B0kLo/uOI; h=Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [216.57.118.63] (helo=ccaselt3) by elasmtp-banded.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1LlW94-000094-Cf for lml@lancaironline.net; Sun, 22 Mar 2009 18:27:54 -0400 X-Original-Message-ID: <007001c9ab3d$71958970$6c01a8c0@nvidia.com> From: "Colyn Case at earthlink" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] FAA Swft 702 Fuel test report X-Original-Date: Sun, 22 Mar 2009 18:27:53 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_006D_01C9AB1B.EA163380" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da940b6ff32388a25d5c482e09648dab5d1a1350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 216.57.118.63 This is a multi-part message in MIME format. ------=_NextPart_000_006D_01C9AB1B.EA163380 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable It's worth reading the summary section on page 29. It's only 2 pages Highlights: - swift fuel weighs 21% more but only increases range by 8% - if you are weight limited for fuel you will only get 89% as much = range. - if you are gallon limited for fuel you will get 8% more range - egt's increase by 50 dF. On my installation that would mean having to = back off the mixture an additional 50dF to keep the TIT's in range - something about aromatics I didn't understand Overall: It's better than not flying but not as far or as fast as 100LL. --------------------------------------------- ----- Original Message -----=20 From: Kevin Stallard=20 To: lml@lancaironline.net=20 Sent: Sunday, March 22, 2009 4:13 PM Subject: [LML] FAA Swft 702 Fuel test report I found a link to a pdf of the Swift fuel test report from FAA testing = done last year. Looks like there is a heat issue ( around 50F greater = than 100LL) and peak HP is about 1.3% less than 100LL. =20 I know very little about the chemistry behind fuels and engine design, = but if more heat is generated, how come that can't be harnessed and = turned into power? =20 http://www.tc.faa.gov/its/worldpac/techrpt/ar0853.pdf =20 Kevin =20 ------=_NextPart_000_006D_01C9AB1B.EA163380 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
It's worth reading the summary section = on page=20 29.  It's only 2 pages
 
Highlights:
- swift fuel weighs 21% more but only = increases=20 range by 8%
- if you are weight limited for fuel = you will only=20 get 89% as much range.
- if you are gallon limited for fuel = you will get=20 8% more range
- egt's increase by 50 dF.  On my = installation=20 that would mean having to back off the mixture an additional 50dF to = keep the=20 TIT's in range
- something about aromatics I didn't=20 understand
 
Overall:
It's better than not flying but not as = far or as=20 fast as 100LL.
 
---------------------------------------------
----- Original Message -----
From:=20 Kevin = Stallard=20
Sent: Sunday, March 22, 2009 = 4:13=20 PM
Subject: [LML] FAA Swft 702 = Fuel test=20 report

I found a link to a pdf = of the=20 Swift fuel test report from FAA testing done last year.  Looks = like there=20 is a heat issue ( around 50F greater than 100LL) and peak HP is about = 1.3%=20 less than 100LL.

 

I know very little about = the=20 chemistry behind fuels and engine design, but if more heat is = generated, how=20 come that can=92t be harnessed and turned into=20 power?

 

http://www= .tc.faa.gov/its/worldpac/techrpt/ar0853.pdf<= /P>

 

Kevin

 

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