X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-ey0-f180.google.com ([209.85.215.180] verified) by logan.com (CommuniGate Pro SMTP 5.3.10) with ESMTP id 4520809 for flyrotary@lancaironline.net; Wed, 20 Oct 2010 10:35:59 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.215.180; envelope-from=rwstracy@gmail.com Received: by eyd9 with SMTP id 9so707861eyd.25 for ; Wed, 20 Oct 2010 07:35:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:sender:received :in-reply-to:references:date:x-google-sender-auth:message-id:subject :from:to:content-type; bh=8mzwi7f5AxdCN0Jhj/67lJx/Ns6jUTmjhZcQTDXNKBE=; b=xZLLLRm6CEvDMhOpVt1wUVR8U++e3viEyyzayMkeRre1wIRV/2ce/nVCNHCwmLvUOz OsKcDJlaU8xyWTeHiJhRMoLbeE/jXgxDnvfNAXcomQzG0CmyCg2br+LP6lEd0w4wlH6v 5jNO+fh1A/+CBu3MpPTs8FQ0R8rE/9ecU9ggs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=fGABfW/o6EAecPLnQjRlUQH2CabcKHzmG+Kov3H8KhSPkFuWV3fxSLYvvzQKCIGAGK BLLAjPfGmryH3zBLfNygIjJosN4f8+VWqaY8VlYH4gbviKJGltVd/9tmoXsI0pOuu22k l/4ChsQb2xkmBriCg8NwWqAmcGWPEZZ8spTHU= MIME-Version: 1.0 Received: by 10.216.13.207 with SMTP id b57mr4414403web.32.1287585292993; Wed, 20 Oct 2010 07:34:52 -0700 (PDT) Sender: rwstracy@gmail.com Received: by 10.216.72.18 with HTTP; Wed, 20 Oct 2010 07:34:52 -0700 (PDT) In-Reply-To: References: Date: Wed, 20 Oct 2010 10:34:52 -0400 X-Google-Sender-Auth: q7ZYa0VLvbe4XwSc5iLPf_jd9A8 Message-ID: Subject: Re: [FlyRotary] Re: header parts source From: Tracy To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0016364d26cf01d0e704930d50dd --0016364d26cf01d0e704930d50dd Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable I didn't have access to TIG at the time so I was gas welding using the Henrob 2000 torch and a rich carburizing flame. Tried a variety of SS rods but they all seemed to work equally well on 321 with the torch. Tracy On Wed, Oct 20, 2010 at 3:26 AM, George Lendich wrote= : > Tracy, > 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 th= e > 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 ye= ar >> > 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, an= d >> the corrosion resistance characteristics of >> the alloys at elevated temperatures, I couldn't see enough of a differen= ce >> 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 >> > > --0016364d26cf01d0e704930d50dd Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable I didn't have access to TIG at the time so I was gas welding using the = Henrob 2000 torch and a rich carburizing flame.=A0 Tried a variety of SS ro= ds but they all seemed to work equally well on 321 with the torch.

Tracy

On Wed, Oct 20, 2010 at 3:26 AM, Ge= orge Lendich <= lendich@aanet.com.au> wrote:
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)
=A0
IF you use thick enough materia= l,=20 even mild steel will work.=A0 I used 321 for 2 reasons.=A0 You can go=20 thinner with it than 304 and reduce the weight.=A0 I put 900+ hours on a se= t=20 of headers made from .035 321 SS with no signs of deterioration (other than= the=20 metal turning a dark color).=A0=A0 321 SS is the nicest welding alloy I'= ;ve=20 ever worked with.=A0 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 tha= t people were commonly using 321 for Rotary=20 exhaust systems
because it has a higher temp rating.

It's b= een 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. =A0I= f=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 32= 1=20 stainless. =A0IIRC, I pinged them about a year
> ago and they did n= ot=20 carry 321 stainless=85
>
>

I also bought bends from Co= lumbia.=20 =A0Their service and delivery was
excellent.

I don't see an= y=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 characteristic= s=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:* [FlyRota= ry]=20 header parts source
>
>
>
> I have been happy wit= h=20 Columbia mandrel bending. =A0they make their own
> parts, family ru= n,=20 and significantly cheaper than burns.
> http://www.mandrel-bends.com/catal= og/
>
> last=20 week I finally got the v-band, another 90=B0, a flex joint, and
> m= uffler=20 added to this header.
>
>
>
>
>
>=20 KevinLane Carpentry
> www.KevinLaneCarpentry.com <http://www.KevinLaneCarpentry.co= m>
>



--
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Archive and UnSub:
http://mail.lancairo= nline.net:81/lists/flyrotary/List.html


--
Homepage: =A0http://www.flyrotary.com/
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