Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Sat, 02 Oct 2004 13:00:34 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m26.mx.aol.com ([64.12.137.7] verified) by logan.com (CommuniGate Pro SMTP 4.2.4) with ESMTP id 450261 for lml@lancaironline.net; Sat, 02 Oct 2004 09:38:11 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.7; envelope-from=YoSamuel@aol.com Received: from YoSamuel@aol.com by imo-m26.mx.aol.com (mail_out_v37_r3.7.) id q.15c.3fb1cd5c (4418) for ; Sat, 2 Oct 2004 09:37:36 -0400 (EDT) From: YoSamuel@aol.com X-Original-Message-ID: <15c.3fb1cd5c.2e900920@aol.com> X-Original-Date: Sat, 2 Oct 2004 09:37:36 EDT Subject: Re: [LML] epoxy comparison X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1096724256" X-Mailer: 9.0 for Windows sub 5000 -------------------------------1096724256 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Jeffco Tg is 122F. If I remember correctly the wing panel in question was painted red. Wouldn't hot day skin temperatures far exceed the HDT for this resin? Would that lead to bond failure? We used 100% Hysol to close our wings on a IV, mostly because of the time it afforded us. Slow Jeffco wasn't Lancair approved at that time. We were building for a V8. We switched to the Walter. We decided to redo the wings for more fuel. We carefully removed the bottom skin with a couple of heat guns. We were told we could have made an oven to heat the whole wing and remove the skin when the temp got just right! We were worried that we stood a chance of ruining the whole wing in the oven. Replacement skins were $2600. Didn't even have to calculate the cost of replacing the whole wing. What a miserable job. the skin did not want to come off easily. Half way through the process, we realized the good news was we had done an excellent job closing this sucker out! On reclose out, again, we used 100% Hysol. "Buttered" both surfaces with a thin coating. Mixed flox at the prescribed amount. Mounded the flox mixture high in the center tapering to the edges. Worked great the first time, we're confident with the second close. Regards. Dave. -------------------------------1096724256 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
Jeffco Tg is 122F. If I remember correctly the wing panel in question w= as=20 painted red. Wouldn't hot day skin temperatures far exceed the HDT for this=20 resin? Would that lead to bond failure?
 
We used 100% Hysol to close our wings on a IV, mostly because of the ti= me=20 it afforded us. Slow Jeffco wasn't Lancair approved at that time. We were=20 building for a V8. We switched to the Walter. We decided to redo the wings f= or=20 more fuel. We carefully removed the bottom skin with a couple of heat guns.=20= We=20 were told we could have made an oven to heat the whole wing and remove the s= kin=20 when the temp got just right! We were worried that we stood a chan= ce=20 of ruining the whole wing in the oven. Replacement skins were $2600. Didn't=20= even=20 have to calculate the cost of replacing the whole wing.
 
What a miserable job. the skin did not want to come off easily. Half wa= y=20 through the process, we realized the good news was we had done an excellent=20= job=20 closing this sucker out! On reclose out, again, we used 100% Hysol. "Buttere= d"=20 both surfaces with a thin coating. Mixed flox at the prescribed amount. Moun= ded=20 the flox mixture high in the center tapering to the edges. Worked great the=20 first time, we're confident with the second close.
 
Regards. Dave.
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