X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao106.cox.net ([68.230.241.40] verified) by logan.com (CommuniGate Pro SMTP 5.2.15) with ESMTP id 3780609 for flyrotary@lancaironline.net; Sat, 25 Jul 2009 11:39:01 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.40; envelope-from=rv-4mike@cox.net Received: from fed1rmimpo03.cox.net ([70.169.32.75]) by fed1rmmtao106.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20090725153825.FDPI25927.fed1rmmtao106.cox.net@fed1rmimpo03.cox.net> for ; Sat, 25 Jul 2009 11:38:25 -0400 Received: from wills ([68.105.87.229]) by fed1rmimpo03.cox.net with bizsmtp id LFeM1c00E4wtUdQ04FeQP1; Sat, 25 Jul 2009 11:38:24 -0400 X-VR-Score: 0.00 X-Authority-Analysis: v=1.0 c=1 a=xHS2sCygpLNVyq0dvjMA:9 a=8L3nMSKS33OZ6kKNBN4A:7 a=7G1PWbFv_FGcxECs7CawhGFoy0oA:4 a=SSmOFEACAAAA:8 a=YarKIx00AAAA:8 a=Ia-xEzejAAAA:8 a=xKQQPljrOQNBLvn9Ti8A:9 a=RRPXS9davcmeiLiXqAAA:7 a=HNeI1MJ6uGwN_40jLx-RlZLRzSgA:4 a=q03wWUK6tb4A:10 a=EzXvWhQp4_cA:10 X-CM-Score: 0.00 Message-ID: <563EB7B8FF034A2EB67F602CB6127A39@wills> From: "Mike Wills" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Primers & Priming Date: Sat, 25 Jul 2009 08:38:21 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001A_01CA0D03.4481CA20" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_001A_01CA0D03.4481CA20 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Jeff, When I started building the RV I went the etch, alodine, prime route = with PPG DP series epoxy primers. Thats whats in the tail feathers. Too = much work. For the balance of the airframe I figured if the SW wash = primer was good enough for Vans its good enough for me and thats what I = used for the most part. For little odds and ends pieces I used a self = etching primer in a rattle can that I picked up at my local auto body = supply shop. Having said all of that if I were building an RV today I wouldnt prime = any of the Alclad surfaces, only the 6061. While I was in the process of = finishing up the airframe construction of the RV I bought into a = partnership on a 1947 Cessna 140. I was pretty involved in the annuals = and general maintenance of that airplane. The inside of the fuselage was = bare 2024T3 just like the RV and there was very little corrosion in it. = I now realize that the Alclad will pretty likely outlast my medical = eligibility. Mike Wills RV-4 N144MW ----- Original Message -----=20 From: Jeff Luckey=20 To: Rotary motors in aircraft=20 Sent: Friday, July 24, 2009 3:10 PM Subject: [FlyRotary] Primers & Priming Please forgive me if I already asked this question here and I realize = that this is not engine-specific but. =20 What are builders of aluminum airplanes doing about priming? The last = time I did any serious painting was a long time ago. Way back then, the = standard practice for aluminum was to clean, acid etch, alodine, then = prime w/ zinc chromate. From what I've read, a lot has changed since = then. =20 I'm getting ready to put rivets in tail feathers and feel the need to = prime interior surfaces. The airplane will most likely be tied down at = an airport that is less than 2 miles from the ocean so I think I will = need very good corrosion protection. Some products I'm considering: =20 1.. ACID 8 self-etching primer - comes highly recommended by auto = guys, but it doesn't have much of a track record in airplanes=20 2.. Stits EP-420 epoxy primer=20 3.. The Sherwin Williams primer that Vans uses=20 =20 If you have used any of these products or have a better idea, I'd = really like to hear about it. =20 =20 Thanks, =20 Jeff =20 =20 (If you think this subject is too far off-topic please reply to me = privately) =20 ------=_NextPart_000_001A_01CA0D03.4481CA20 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Jeff,
 
When I started building the RV I went = the etch,=20 alodine, prime route with PPG DP series epoxy primers. Thats whats in = the tail=20 feathers. Too much work. For the balance of the airframe I figured if = the SW=20 wash primer was good enough for Vans its good enough for me and thats = what I=20 used for the most part. For little odds and ends pieces I used a self = etching=20 primer in a rattle can that I picked up at my local auto body supply=20 shop.
 
Having said all of that if I were = building an RV=20 today I wouldnt prime any of the Alclad surfaces, only the 6061. While I = was in=20 the process of finishing up the airframe construction of the RV I bought = into a=20 partnership on a 1947 Cessna 140. I was pretty involved in the annuals = and=20 general maintenance of that airplane. The inside of the fuselage was = bare 2024T3=20 just like the RV and there was very little corrosion in it. I now = realize=20 that the Alclad will pretty likely outlast my medical = eligibility.
 
Mike Wills
RV-4 N144MW
----- Original Message -----
From:=20 Jeff Luckey=20
Sent: Friday, July 24, 2009 = 3:10 PM
Subject: [FlyRotary] Primers = &=20 Priming

Please forgive me if I already asked this = question=20 here and I realize that this is not engine-specific=20 but=85

 

What=20 are builders of aluminum airplanes doing about priming?  The last = time I=20 did any serious painting was a long time ago.  Way back then, the = standard practice for aluminum was to clean, acid etch, alodine, then = prime w/=20 zinc chromate.  From what I=92ve read, a lot has changed since=20 then.

 

I=92m=20 getting ready to put rivets in tail feathers and feel the need to = prime=20 interior surfaces.  The airplane will most likely be tied down at = an=20 airport that is less than 2 miles from the ocean so I think I will = need very=20 good corrosion protection.  Some products I=92m=20 considering:

 

  1. ACID 8 self-etching primer = =96 comes=20 highly recommended by auto guys, but it doesn=92t have much of a = track record=20 in airplanes=20
  2. Stits EP-420 epoxy=20 primer=20
  3. The Sherwin Williams primer = that Vans=20 uses

 

If=20 you have used any of these products or have a better idea, I=92d = really like to=20 hear about it.

 

 

Thanks,

 

Jeff

 

 

(If=20 you think this subject is too far off-topic please reply to me=20 privately)

 

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