X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao103.cox.net ([68.230.241.43] verified) by logan.com (CommuniGate Pro SMTP 5.2.15) with ESMTP id 3790488 for flyrotary@lancaironline.net; Fri, 31 Jul 2009 11:47:17 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.43; envelope-from=alventures@cox.net Received: from fed1rmimpo02.cox.net ([70.169.32.72]) by fed1rmmtao103.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20090731154644.DMFW1223.fed1rmmtao103.cox.net@fed1rmimpo02.cox.net> for ; Fri, 31 Jul 2009 11:46:44 -0400 Received: from BigAl ([72.192.133.78]) by fed1rmimpo02.cox.net with bizsmtp id Nfmj1c0061hf1Cg04fmjgt; Fri, 31 Jul 2009 11:46:43 -0400 X-VR-Score: -100.00 X-Authority-Analysis: v=1.0 c=1 a=4Da6bvebCNAA:10 a=pSrmsxKr-qlSN_6avzUA:9 a=FiZLiP6nOh3H-etjXO3NZgp4gTQA:4 a=JLLBmlddRI7_Dkhe6_EA:9 a=dUekT7UZ1YBsMbb9JH0A:7 a=4uCB_xl5HiJ_SsRFK_iB9RSRw3YA:4 X-CM-Score: 0.00 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Using Ethanol-laced Gasoline Date: Fri, 31 Jul 2009 08:48:15 -0800 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0000_01CA11BB.A4CDFCC0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6838 Importance: Normal Thread-Index: AcoR32MCo49e3goDQ0yN7j73kiaIAQAGjmMg In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01CA11BB.A4CDFCC0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 What, then, accounts for the horror stories that you hear all the time = with gasohol? Best Regards, =20 Steve Thomas =20 Steve; =20 I don't specifically recall any horror stories for EZpoxy with 10%, or = less, ethanol; but perhaps I have selective memory. I was pretty specific = "EZpoxy tanks are OK with ethanol levels up to 10%." =20 Factors that may contribute to the horror stories are a) different kinds = of epoxies; b) more than 10% ethanol; c) lower cure temps for the epoxy, = say, less than 70F; d) slightly off mix ratios; e) perhaps water in the ethanol/fuel mix which could be climate related - condensation in the = tanks; e) other. =20 I recall from some discussion with an expert years ago that post-cure at 150F significantly increased resistance to all kinds of chemical = reaction; and he believed - by extrapolation - that extended cure time above 90F = could make a difference. Also he believed that slightly off mix ratio would = be a factor, as well as poor mixing of the resin/hardener. =20 I'm not beyond being concerned about my EZpoxy tanks; but they did see considerable time at 90F or above, and I, and others have had mogas in = the tanks more than 4 years without deleterious effects. =20 Al G _______________________________________________________ =20 =20 =20 On Jul 30, 2009, at 10:41 PM, Al Gietzen wrote: =20 There seems to be pretty good evidence that the EZpoxy tanks are OK with ethanol levels up to 10%. =20 ------=_NextPart_000_0000_01CA11BB.A4CDFCC0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

 

What, then, accounts for the horror stories = that you hear all the time with gasohol?


Best Regards,

 =

Steve Thomas

 <= /font>

Steve;

 

I don’t specifically recall any horror stories for EZpoxy with 10%, = or less, ethanol; but perhaps I have selective memory.  I was pretty = specific “EZpoxy tanks are OK with ethanol levels up to 10%.”

 

Factors that may contribute to = the horror stories are a) different kinds of epoxies; b) more than 10% = ethanol; c) lower cure temps for the epoxy, say, less than 70F; d) slightly off mix = ratios; e) perhaps water in the ethanol/fuel mix which could be climate related = – condensation in the tanks; e) other.

 

I recall from some discussion = with an expert years ago that post-cure at 150F significantly increased = resistance to all kinds of chemical reaction; and he believed – by extrapolation – that extended cure time above 90F could make a difference.  = Also he believed that slightly off mix ratio would be a factor, as well as = poor mixing of the resin/hardener.

 

I’m not beyond being = concerned about my EZpoxy tanks; but they did see considerable time at 90F or = above, and I, and others have had mogas in the tanks more than 4 years without = deleterious effects.

 

Al G






___________________________________________________= ____

 

 



 

On Jul 30, 2009, at 10:41 PM, Al Gietzen wrote:

 

There seems to be pretty good evidence = that the EZpoxy tanks are OK with ethanol levels up to = 10%.

 

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