X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from poplet2.per.eftel.com ([203.24.100.45] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4397647 for flyrotary@lancaironline.net; Sun, 18 Jul 2010 18:17:42 -0400 Received-SPF: none receiver=logan.com; client-ip=203.24.100.45; envelope-from=lendich@aanet.com.au Received: from sv1-1.aanet.com.au (mail.aanet.com.au [203.24.100.34]) by poplet2.per.eftel.com (Postfix) with ESMTP id B6B7917358E for ; Mon, 19 Jul 2010 06:17:06 +0800 (WST) Received: from ownerf1fc517b8 (203.171.92.134.static.rev.aanet.com.au [203.171.92.134]) by sv1-1.aanet.com.au (Postfix) with SMTP id 2D6FFBEC004 for ; Mon, 19 Jul 2010 06:17:06 +0800 (WST) Message-ID: From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Tie Down Hardpoints Date: Mon, 19 Jul 2010 08:17:11 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0013_01CB271A.C990BCD0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5931 X-Antivirus: avast! (VPS 100718-0, 07/18/2010), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0013_01CB271A.C990BCD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thomas, Well that's a new one on me. Sound to me you might be getting confused = with Anodized Aluminium. I know lower grade stainless can pit because of = electrolysis in extreme environments and because of that they use 316 ( = marine) grade. I know carbon grade stainless can rust However if anyone can confirm this I would appreciate hearing further = about it. George ( down under) I think I want to stay away from the stainless because it will be = completely enclosed in fiberglas. Stainless needs to be exposed to an oxygen environment in order to for = that protective layer (chrome oxide) that prevents further oxidation. At least that's what I've been told/read. -------------------------------------------------------------------------= ----- Thomas, I agree with Tony, use something that won't rust, nothing looks worse = on the exterior of a plane. Maybe consider stainless steel, I use it on = everything. George (down under) Hey Tony. Now I'm looking for the tie down hardpoints (either parts or specs) = referenced on page 25 of the 'A' kit manual. I have not found them in the drawings either. They say thay are Cad plated steel. I can have them made but I would = be guessing.=20 Maybe .125 3" x 3.5" plate would suffice with a threaded steel = bushing welded to it and then plated. I figure the bushing threaded/tapped 1/4" x 28 could be 5/8" = material ... maybe. ... or 3/4". Any Ideas? Thanks. T Mann=20 ------=_NextPart_000_0013_01CB271A.C990BCD0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Thomas,

Well that's a new one on me. = Sound to me you=20 might be getting confused with Anodized Aluminium. I know lower=20 grade stainless can pit because of electrolysis in extreme = environments and=20 because of that they use 316 ( marine) grade. I know carbon grade=20 stainless can rust

However if anyone can confirm this I=20 would appreciate hearing further about it.

George ( down under)

I=20 think I want to stay away from the stainless because it will be = completely=20 enclosed in fiberglas.
Stainless needs to be exposed to an oxygen=20 environment in order to for that protective layer (chrome oxide) that = prevents=20 further oxidation.

At least that's what I've been=20 told/read.

Thomas,

I agree with Tony, use something that = won't rust,=20 nothing looks worse on the exterior of a plane. Maybe consider = stainless=20 steel, I use it on everything.

George (down under)

Hey=20 Tony.
Now I'm looking for the tie down hardpoints (either parts = or specs)=20 referenced on page 25 of the 'A' kit manual.

I have not found = them in=20 the drawings either.

They say thay are Cad plated steel. I = can have=20 them made but I would be guessing.
Maybe .125 3" x 3.5" = plate=20 would suffice with a threaded steel bushing welded to it and then=20 plated.
I figure the bushing threaded/tapped 1/4" x 28 could be = 5/8"=20 material ... maybe. ... or 3/4".

Any = Ideas?

Thanks.

T=20 Mann
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