X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from rv-out-0506.google.com ([209.85.198.231] verified) by logan.com (CommuniGate Pro SMTP 5.2.6) with ESMTP id 3077821 for flyrotary@lancaironline.net; Fri, 15 Aug 2008 08:10:29 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.198.231; envelope-from=msteitle@gmail.com Received: by rv-out-0506.google.com with SMTP id f6so830576rvb.7 for ; Fri, 15 Aug 2008 05:09:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:in-reply-to:mime-version:content-type:references; bh=Gg/4Q7DwdkLGfelvp/YoIEVpv9Ri3sBJyTN28sBn5Cw=; b=vsKirH1aDP0eywE3QxMPRDsqZrgX0yl0Mi1n4rnfmYwEkueA0DtVLQFLqtAIQiu6Tr j12XPsalmFK7XkPQ2KKfbGdp5P+C2R7NBjMwFADw+b3GUugHzuZtRUEWMidbi9PWsrwY AiSa912btpLNlL9MjzZiM9I6hE51rwgxsUrJI= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version :content-type:references; b=AwB+esutddtVrCOBvlE40cwI3VXbs8TcKeo0hQV58ms5pmQUVyOwJc+C5X1EM8+1Dy 0FVW0dKZCaaZIHpBw8iK91zboVIZMi/wiftBvz6UH85esidISdU0GhJLwGyBKdpabSlZ kdH9qrx60LxlHMEcoWG5ovIZjhkxp7u/zuyIc= Received: by 10.141.194.11 with SMTP id w11mr1425396rvp.228.1218802190679; Fri, 15 Aug 2008 05:09:50 -0700 (PDT) Received: by 10.141.178.21 with HTTP; Fri, 15 Aug 2008 05:09:50 -0700 (PDT) Message-ID: <5cf132c0808150509i28926079qd122eb2033e5580@mail.gmail.com> Date: Fri, 15 Aug 2008 07:09:50 -0500 From: "Mark Steitle" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Tank problem with Mogas vs fouled spark plugs In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_11299_13601505.1218802190681" References: ------=_Part_11299_13601505.1218802190681 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline I need to take a sample of Hysol 9360 and test it for resistance to ethanol. On Fri, Aug 15, 2008 at 2:30 AM, George Lendich wrote: > Mark, > Thanks for the response, I know Hysol is expensive and a high end Epoxy. I > am unsure what Europa uses and if it's Ethanol resistant- so I sent them an > e-mail and will advise if there is any positive information. > George ( down under) > > George, > > I'm not sure exactly what you mean by "a premo product", but the Hysol > specified by Lancair went for over $100 per quart, plus shipping (including > a hazardous materials surcharge). Between my two wings I used about 6 > quarts. I will have to check, but I think it was Hysol 9360. According to > this link, it is now $120/qt. You can read the specs on the stuff at > http://www.aerocraftparts.com/ItemForm.aspx?item=9360-QT > > Mark > > > On 8/14/08, George Lendich wrote: >> >> >> >> Mark / Bill, >> It's been a while since I researched this but the high strength epoxy >> Europa uses to bond wing skins etc. was a premo product, but I unsure about >> how it stands up to alcohol. >> Anyone have some info on that? >> George (down under) >> >> >> Bill, >> My big concern is the bond joint attaching the wing skin to the spar and >> ribs. Lancair uses Hysol to bond the honeycomb skin to the ribs >> during closeout and there is no way to seal the Hysol off from the fuel. I >> have seen pictures of where ethanol had attacked the Hysol. I don't know >> how long it took or how it was corrected. So, my main concern is with the >> Hysol adhesive, not the Jeffco 9700. >> >> Mark >> >> >> On 8/14/08, Bill Schertz wrote: >>> >>> The Jeffco 9700 FCR data sheet showed that it is supposed to be >>> compatible with gas/alcohol mixes. One of my fellow builders tested some >>> samples with Jeffco coatings, and Aeropoxy in a mix of gas/15%Alcohol. The >>> Jeffco coating was intact after the soaking, *but* it did swell some. The >>> Aeropoxy flaked off . >>> >>> So, any pinholes in the Jeffco, and the underlying aeropoxy would be >>> attacked, leading to a sequential failure as the underlying epoxy was >>> attacked. >>> >>> Bill Schertz >>> KIS Cruiser #4045 >>> N343BS >>> ----- Original Message ----- From: "Charlie England" < >>> ceengland@bellsouth.net> >>> To: "Rotary motors in aircraft" >>> Sent: Wednesday, August 13, 2008 1:26 PM >>> Subject: [FlyRotary] Re: Tank problem with Mogas vs fouled spark plugs >>> >>> >>> Bill, >>>> >>>> Do you still have the container of sealer? If so, why not just look up >>>> the product's data sheet or call the manufacturer to see if it's safe for >>>> alcohol? IIRC, the stuff that Van has sold in recent years (Flamemaster >>>> brand) is alcohol safe. At least, the stuff they shipped to me was. A bigger >>>> concern if you used any old aviation style items like gascolators, is the >>>> likelihood of natural rubber gaskets in them. >>>> >>> >>> >>> -- >>> Homepage: http://www.flyrotary.com/ >>> Archive and UnSub: >>> http://mail.lancaironline.net:81/lists/flyrotary/List.html >>> >> >> > ------=_Part_11299_13601505.1218802190681 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline
I need to take a sample of Hysol 9360 and test it for resistance to ethanol.  


On Fri, Aug 15, 2008 at 2:30 AM, George Lendich <lendich@optusnet.com.au> wrote:
Mark,
Thanks for the response, I know Hysol is expensive and a high end Epoxy. I am unsure what Europa uses and if it's Ethanol resistant- so I sent them an e-mail and will advise if there is any positive information.
George ( down under)
 
George,
I'm not sure exactly what you mean by "a premo product", but the Hysol specified by Lancair went for over $100 per quart, plus shipping (including a hazardous materials surcharge).  Between my two wings I used about 6 quarts.  I will have to check, but I think it was Hysol 9360.  According to this link, it is now $120/qt.  You can read the specs on the stuff at http://www.aerocraftparts.com/ItemForm.aspx?item=9360-QT
 
Mark

 
On 8/14/08, George Lendich <lendich@optusnet.com.au> wrote:
 
Mark / Bill,
It's been a while since I researched this but the high strength epoxy Europa uses to bond wing skins etc. was a premo product, but I unsure about how it stands up to alcohol.
Anyone have some info on that?
George (down under)

 
Bill,
My big concern is the bond joint attaching the wing skin to the spar and ribs.  Lancair uses Hysol to bond the honeycomb skin to the ribs during closeout and there is no way to seal the Hysol off from the fuel.  I have seen pictures of where ethanol had attacked the Hysol.  I don't know how long it took or how it was corrected.  So, my main concern is with the Hysol adhesive, not the Jeffco 9700.
 
Mark 

 
On 8/14/08, Bill Schertz <wschertz@comcast.net> wrote:
The Jeffco 9700 FCR data sheet showed that it is supposed to be compatible with gas/alcohol mixes.  One of my fellow builders tested some samples with Jeffco coatings, and Aeropoxy in a mix of gas/15%Alcohol.  The Jeffco coating was intact after the soaking, *but* it did swell some. The Aeropoxy flaked off .

So, any pinholes in the Jeffco, and the underlying aeropoxy would be attacked, leading to a sequential failure as the underlying epoxy was attacked.

Bill Schertz
KIS Cruiser #4045
N343BS
----- Original Message ----- From: "Charlie England" <ceengland@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, August 13, 2008 1:26 PM
Subject: [FlyRotary] Re: Tank problem with Mogas vs fouled spark plugs


Bill,

Do you still have the container of sealer? If so, why not just look up the product's data sheet or call the manufacturer to see if it's safe for alcohol? IIRC, the stuff that Van has sold in recent years (Flamemaster brand) is alcohol safe. At least, the stuff they shipped to me was. A bigger concern if you used any old aviation style items like gascolators, is the likelihood of natural rubber gaskets in them.


--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html



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