X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imr-mb02.mx.aol.com ([64.12.207.163] verified) by logan.com (CommuniGate Pro SMTP 5.3.10) with ESMTP id 4520990 for flyrotary@lancaironline.net; Wed, 20 Oct 2010 12:33:50 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.207.163; envelope-from=Bktrub@aol.com Received: from imo-da03.mx.aol.com (imo-da03.mx.aol.com [205.188.169.201]) by imr-mb02.mx.aol.com (8.14.1/8.14.1) with ESMTP id o9KGX5jZ028553 for ; Wed, 20 Oct 2010 12:33:05 -0400 Received: from Bktrub@aol.com by imo-da03.mx.aol.com (mail_out_v42.9.) id q.ecf.936dedb (37130) for ; Wed, 20 Oct 2010 12:33:02 -0400 (EDT) Received: from smtprly-ma01.mx.aol.com (smtprly-ma01.mx.aol.com [64.12.207.140]) by cia-ma02.mx.aol.com (v129.5) with ESMTP id MAILCIAMA024-5c494cbf19b577; Wed, 20 Oct 2010 12:33:02 -0400 Received: from webmail-m036 (webmail-m036.sim.aol.com [64.12.101.219]) by smtprly-ma01.mx.aol.com (v129.4) with ESMTP id MAILSMTPRLYMA017-5c494cbf19b577; Wed, 20 Oct 2010 12:32:53 -0400 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: header parts source Date: Wed, 20 Oct 2010 12:32:53 -0400 X-AOL-IP: 208.46.237.130 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: bktrub@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8CD3E8B940A0777_CF8_21B5_webmail-m036.sysops.aol.com" X-Mailer: AOL Webmail 32797-STANDARD Received: from 208.46.237.130 by webmail-m036.sysops.aol.com (64.12.101.219) with HTTP (WebMailUI); Wed, 20 Oct 2010 12:32:53 -0400 Message-Id: <8CD3E8B9402E357-CF8-F40@webmail-m036.sysops.aol.com> X-Spam-Flag:NO X-AOL-SENDER: Bktrub@aol.com ----------MB_8CD3E8B940A0777_CF8_21B5_webmail-m036.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Where did you get the inconel rod? Central welding up here in Washinton wa= nts $35 a pound, minimum order of ten pounds. I've got an inconel exhaust= that is tacked together right now, but can't proceed until I get some 625= Inconel rod.=20 Brian Trubee -----Original Message----- From: Mark Steitle To: Rotary motors in aircraft Sent: Wed, Oct 20, 2010 5:07 am Subject: [FlyRotary] Re: header parts source Tracy,=20 =20 I used inconel filler rod (which I had to purchase from an aerospace suppl= y firm in California) and TIG welded my current inconel exhaust. Welding= 625 Inconel was about the same as welding 321 SS, i.e. no special skills= requried. =20 Mark S. =20 On Tue, Oct 19, 2010 at 8:47 PM, Tracy wrote: 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 sign= s 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 Incon= el with no luck at all so I would have needed professional help if I used= that. Tracy=20 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 worki= ng 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=E2=80=A6 > > 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=C2=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 ----------MB_8CD3E8B940A0777_CF8_21B5_webmail-m036.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"
Where did you get the inconel rod? Central welding up here in Washint= on wants $35 a pound, minimum order of ten pounds. I've got an incone= l exhaust that is tacked together right now, but can't proceed until I get= some 625 Inconel rod.
 
Brian Trubee



-----Original Message-----
From: Mark Steitle <msteitle@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Wed, Oct 20, 2010 5:07 am
Subject: [FlyRotary] Re: header parts source

Tracy,
 
I used inconel filler rod (which I had to purchase from an aeros= pace supply firm in California) and TIG welded my current inconel exhaust.=   Welding 625 Inconel was about the same as welding 321 SS, i.e.= no special skills requried.
 
Mark S. 

On Tue, Oct 19, 2010 at 8:47 PM, Tracy <tracy@rotaryaviatio= n.com> wrote:
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 ni= cest welding alloy I've ever worked with.  I tried welding Inconel wi= th no luck at all so I would have needed professional help if I used that.=

Tracy=20


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 exhaust systems because it has a higher temp rating.

It's been a while, but I vaguely remember looking it up, and the max worki= ng
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 readil= y
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 abou= t a year
> ago and they did not carry 321 stainless=E2=80=A6
>
>

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<= br> 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 thei= r own
> parts, family run, and significantly cheaper than burns.
> htt= p://www.mandrel-bends.com/catalog/
>
> last week I finally got the v-band, another 90=C2=B0, a flex joint,= and
> muffler added to this header.
>
>
>
>
>
> KevinLane Carpentry
> www.Ke= vinLaneCarpentry.com <http://www.KevinLaneCarpentry.com>
>



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