X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from poplet3.per.eftel.com ([203.24.100.44] verified) by logan.com (CommuniGate Pro SMTP 5.3.10) with ESMTP id 4520367 for flyrotary@lancaironline.net; Wed, 20 Oct 2010 03:27:40 -0400 Received-SPF: none receiver=logan.com; client-ip=203.24.100.44; envelope-from=lendich@aanet.com.au Received: from sv1-1.aanet.com.au (mail.aanet.com.au [203.24.100.34]) by poplet3.per.eftel.com (Postfix) with ESMTP id 221DC37D13 for ; Wed, 20 Oct 2010 15:27:04 +0800 (WST) Received: from OwnerPC (203.171.92.134.static.rev.aanet.com.au [203.171.92.134]) by sv1-1.aanet.com.au (Postfix) with SMTP id 49F79C5DA8 for ; Wed, 20 Oct 2010 15:27:03 +0800 (WST) Message-ID: From: "George Lendich" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: header parts source Date: Wed, 20 Oct 2010 17:26:57 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0011_01CB707B.FF32D1C0" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 X-Antivirus: avast! (VPS 101019-1, 19/10/2010), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0011_01CB707B.FF32D1C0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Tracy,=20 What sort of welding did you do, if it were MIG you probably used 316 = welding wire, that's what is used for all stainless, if TIG you may have = used some sort of rod recommended for 321, don't know what that would be = - probably 316. George (down under) IF you use thick enough material, even mild steel will work. I used 321 = for 2 reasons. You can go thinner with it than 304 and reduce the = weight. I put 900+ hours on a set of headers made from .035 321 SS with = no signs of deterioration (other than the metal turning a dark color). = 321 SS is the nicest welding alloy I've ever worked with. I tried = welding Inconel with no luck at all so I would have needed professional = help if I used that. Tracy On Tue, Oct 19, 2010 at 8:22 PM, Jeff Luckey = wrote: I thought that people were commonly using 321 for Rotary exhaust = systems because it has a higher temp rating. It's been a while, but I vaguely remember looking it up, and the max = working temps were something like this: 304 =3D 1200F 321 =3D 1600F So, my question is, are people using 304 successfully for Rotary = exhaust systems. If so, that's great, because it's cheaper & more readily available. -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of Ernest Christley Sent: Tuesday, October 19, 2010 07:51 To: Rotary motors in aircraft Subject: [FlyRotary] Re: header parts source Jeff Luckey wrote: > Does Columbia now carry 321 stainless. IIRC, I pinged them about a = year > ago and they did not carry 321 stainless=85 > > I also bought bends from Columbia. Their service and delivery was excellent. I don't see any mention of 321, but I wasn't really concerned about = it. Given the diameter of tube we have to use for exhaust flow, and the thickness we need to contain the exhaust pulse, = and the corrosion resistance characteristics of the alloys at elevated temperatures, I couldn't see enough of a = difference to stress over. > > = ------------------------------------------------------------------------ > > *From:* Rotary motors in aircraft = [mailto:flyrotary@lancaironline.net] > *On Behalf Of *kevin lane > *Sent:* Monday, October 18, 2010 22:03 > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] header parts source > > > > I have been happy with Columbia mandrel bending. they make their = own > parts, family run, and significantly cheaper than burns. > http://www.mandrel-bends.com/catalog/ > > last week I finally got the v-band, another 90=B0, a flex joint, and > muffler added to this header. > > > > > > KevinLane Carpentry > www.KevinLaneCarpentry.com > -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_0011_01CB707B.FF32D1C0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
Tracy,
What sort of welding did you do, if it were = MIG you=20 probably used 316 welding wire, that's what is used for all stainless, = if TIG=20 you may have used some sort of rod recommended for 321, don't know what = that=20 would be - probably 316.
George (down under)
 
IF you use thick enough = material,=20 even mild steel will work.  I used 321 for 2 reasons.  You can = go=20 thinner with it than 304 and reduce the weight.  I put 900+ hours = on a set=20 of headers made from .035 321 SS with no signs of deterioration (other = than the=20 metal turning a dark color).   321 SS is the nicest welding = alloy I've=20 ever worked with.  I tried welding Inconel with no luck at all so I = would=20 have needed professional help if I used that.

Tracy

On Tue, Oct 19, 2010 at 8:22 PM, Jeff Luckey = <JLuckey@pacbell.net> = wrote:

I thought that people were commonly using 321 = for Rotary=20 exhaust systems
because it has a higher temp rating.

It's = been a=20 while, but I vaguely remember looking it up, and the max = working
temps were=20 something like this:

304 =3D 1200F
321 =3D 1600F

So, = my question=20 is, are people using 304 successfully for Rotary exhaust
systems. =  If=20 so, that's great, because it's cheaper & more=20 readily
available.



-----Original = Message-----
From:=20 Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]=20 On
Behalf Of Ernest Christley
Sent: Tuesday, October 19, 2010=20 07:51
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = header=20 parts source

Jeff Luckey wrote:
> Does Columbia now carry = 321=20 stainless.  IIRC, I pinged them about a year
> ago and they = did not=20 carry 321 stainless=85
>
>

I also bought bends from = Columbia.=20  Their service and delivery was
excellent.

I don't see = any=20 mention of 321, but I wasn't really concerned about it.
Given the = diameter=20 of tube we have to use for
exhaust flow, and the thickness we need = to=20 contain the exhaust pulse, and
the corrosion resistance = characteristics=20 of
the alloys at elevated temperatures, I couldn't see enough of a=20 difference
to stress over.

>
>=20 = ------------------------------------------------------------------------<= BR>>
>=20 *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
>=20 *On Behalf Of *kevin lane
> *Sent:* Monday, October 18, 2010=20 22:03
> *To:* Rotary motors in aircraft
> *Subject:* = [FlyRotary]=20 header parts source
>
>
>
> I have been happy = with=20 Columbia mandrel bending.  they make their own
> parts, = family run,=20 and significantly cheaper than burns.
> http://www.mandrel-bends.com/catalog/
>
>= last=20 week I finally got the v-band, another 90=B0, a flex joint, = and
> muffler=20 added to this header.
>
>
>
>
>
>=20 KevinLane Carpentry
> www.KevinLaneCarpentry.com <http://www.KevinLaneCarpentry.com>
>

=

--
Homepage:=20  http://www.flyrotary.com/
Archive and = UnSub:
http://mail.lancaironline.net:81/lists/flyrotary/List.htm= l


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

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