X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 28 Jun 2012 10:27:18 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-spurfowl.atl.sa.earthlink.net ([209.86.89.66] verified) by logan.com (CommuniGate Pro SMTP 5.4.6) with ESMTP id 5628967 for lml@lancaironline.net; Wed, 27 Jun 2012 22:56:00 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.66; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=nSak2viFxRNwO4K4wZnz9TJxXGsu9PVEjpvIYo2Lvjp7C4jaEGiGd4oscP5JoZYs; h=Received:From:Mime-Version:Content-Type:Subject:Date:In-Reply-To:To:References:Message-Id:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [70.105.247.254] (helo=[192.168.1.24]) by elasmtp-spurfowl.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1Sk4tB-00021k-RY for lml@lancaironline.net; Wed, 27 Jun 2012 22:55:26 -0400 From: Colyn Case Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: multipart/alternative; boundary=Apple-Mail-360--379810907 Subject: Re: [LML] Re: LN2 queries X-Original-Date: Wed, 27 Jun 2012 22:55:25 -0400 In-Reply-To: X-Original-To: "Lancair Mailing List" References: X-Original-Message-Id: X-Mailer: Apple Mail (2.1084) X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da940cef255dda52b520740f4f931f211396d350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 70.105.247.254 --Apple-Mail-360--379810907 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 Bill, Covering the firewall with stainless seems like a big improvement. I = see you dispensed with the blanket? ....or did you? What is the rationale for eliminating the insulating effect of the = blanket? Colyn On Jun 27, 2012, at 6:41 PM, = wrote: Posted for "Bill Harrelson" : Rob, =20 I did not ground (earth) any of my fuel tanks. I am not aware of any = 320/360=20 builder who has done so. Having said that, it is certainly not a bad = idea as=20 long as you do it in a lightweight manner.=20 =20 As far as the fibrefrax, it=92s good stuff. I put it in beneath the = stainless=20 steel firewall per the manual. What I found is that under compressive = loads it=20 gets squeezed flat causing the stainless to wrinkle. This will have = little or=20 no practical implication...but it looks like crap. I removed everything = from=20 the firewall and replaced the fibrefrax with washers everywhere that = something=20 was bolted to the firewall. This included the engine mount bolts. Now, I = have=20 solid, no compression, surfaces at the bolts and no wrinkles in the = stainless=20 while retaining the heat/fire resistance of the fibrefrax.=20 =20 The first photo shows the fibrefrax cut out around the washers = (phenolic=20 behind the battery) and ready for the stainless to be added. The second photo is the completed firewall with everything torqued down = and=20 no wrinkles. I burnished the stainless with scotchbrite and a hand = drill. =20 Let me know if you need more info. =20 =20 =20 Bill Harrelson N5ZQ 320 2,050 hrs N6ZQ IV under construction http://www.mykitlog.com/harrelson/ =20 =20 =20 =20 =20 =20 =20 From: Stevens Family=20 Sent: Monday, June 25, 2012 8:27 AM To: lml@lancaironline.net=20 Subject: [LML] LN2 queries =20 Another couple of queries for those who have built the L320/360 = aircraft. =20 =20 =20 1. I notice that the instructions make no mention of earthing the = fuel=20 filler on the header tank. On my kit, which I purchased partly built = with the=20 wings completed, I notice that all the metal parts of the wing tanks are=20= electrically bonded, including the fuel filler port inserts. However in = the=20 instructions for building the header tank, there is no mention of = bonding the=20 filler port. It would be quite simple to do with some copper bonding = strap=20 glassed into the inside of the forward deck, and passing through the = flox bond=20 where the tank is bonded to the forward deck. What has everyone else = done? =20 2. I am researching the firewall forward part of the manual, and = notice=20 they talk about using 2 layers of fibrefax behind the stainless steel = fire=20 shield which covers the firewall, all bonded into place with =93 high=20 temperature silicone=94. As this section of my construction manual is = dated=20 1994, I am wondering whether this is still the recommended process, or = have=20 fibrefax and high temperature silicone been superceded by something more = up to=20 date.=20 =20 =20 =20 I appreciate any suggestions offered. =20 =20 =20 Regards, =20 =20 =20 Rob Stevens =20 Perth, =20 Western Australia. =20 =20 -- For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html --Apple-Mail-360--379810907 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 marv@lancair.net> <marv@lancair.net> = wrote:


Posted for "Bill Harrelson" <n5zq@verizon.net>:

 Ro= b,
 
 I did not ground (earth) any of my fuel tanks. I = am not aware of any 320/360
builder who has done so. Having said that, it is certainly not a bad = idea as
long as you do it in a lightweight manner. =
 
 As far as the fibrefrax, it=92s good stuff. I put it in beneath the = stainless
steel firewall per the manual. What I found is that under = compressive loads it
gets squeezed flat causing the stainless to wrinkle. This = will have little or
no practical implication...but it looks like = crap. I removed everything from
the firewall and replaced the fibrefrax with = washers everywhere that something
was bolted to the firewall. This included the engine mount bolts. Now, I have
solid, no compression, = surfaces at the bolts and no wrinkles in the stainless
while = retaining the heat/fire resistance of the fibrefrax.
 
 The first = photo shows the fibrefrax cut out around the washers (phenolic =
behind the battery) and ready for the stainless to be added.
 The second = photo is the completed firewall with everything torqued down and
no wrinkles. I burnished the stainless with scotchbrite and a hand = drill.
 
 Let me know if you need more info.
 
 
 
 Bill = Harrelson
 N5ZQ 320 2,050 hrs
 N6ZQ  IV under construction
 http://www.mykitlog.com/harrel= son/
 
 
 
 
 
 
&n= bsp;
From: Stevens Family
 Sent: Monday, June 25, 2012 8:27 AM
 To: lml@lancaironline.net =
 Subject: [LML] LN2 queries
 
 Another couple of queries for those who have built the L320/360 = aircraft.
 
 
 
 1.    = ;   I notice that the instructions make no mention of earthing the fuel =
filler on the header tank. On my kit, which I purchased partly built = with the
wings completed, I notice that all the metal parts of the wing tanks = are
electrically bonded, including the fuel filler port inserts. = However in the
instructions for building the header tank, there is no = mention of bonding the
filler port. It would be quite simple to do = with some copper bonding strap
glassed into the inside of the forward deck, = and passing through the flox bond
where the tank is bonded to the = forward deck. What has everyone else = done?
 
 2.       I am = researching the firewall forward part of the manual, and notice
they talk about using 2 layers of fibrefax behind the = stainless steel fire
shield which covers the firewall, all bonded = into place with =93 high
temperature silicone=94. As this section of my = construction manual is dated
1994, I am wondering whether this is = still the recommended process, or have
fibrefax and high temperature silicone = been superceded by something more up to
date.
 
 
 
 I appreciate any suggestions = offered.
 
 
 
 Regards,
 
&nbs= p;
 
 Rob Stevens
 
 Perth,
 
 Western = Australia.
 
 
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For archives and = unsub http://mail.= lancaironline.net:81/lists/lml/List.html

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