X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-ew0-f52.google.com ([209.85.215.52] verified) by logan.com (CommuniGate Pro SMTP 5.3.10) with ESMTP id 4520585 for flyrotary@lancaironline.net; Wed, 20 Oct 2010 08:08:20 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.215.52; envelope-from=msteitle@gmail.com Received: by ewy23 with SMTP id 23so3948936ewy.25 for ; Wed, 20 Oct 2010 05:07:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=JoDX+t+3Pr7wEHyClDJ1E6gd29ciTKihQ5mvLXPJqFo=; b=l9Y5+uaat6JXZh9mxXJIgzapoqYL3Ks8JP9nHznfi6+HttxyOf5U6IfwFBCiLHz7j/ JTUZ2mfTBz3H8BojfpUaRLmsrSaz5DFOcf29aTSF9acK10fA3A8uIcceIi2Yja1VQqHn FBXsehA3x3+H2VSJ1S39Z+c28yoU3B7Joixm4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=x2XUGtLX8a09ORdSI8/HEG6P/mpNypeW90ZKkBw20RUyLJ5WIklRTROgHLN24R6hYG D9xmqS0hCjyX3+aLQfz3SatRd2A/lATrRvc8pDQ1t3lHp6cnn43Q48OaTETJ07DriNto MWY9oKe5i3lxABGuorzQzRxj6HKHtxb/sbjSs= MIME-Version: 1.0 Received: by 10.213.28.208 with SMTP id n16mr412206ebc.75.1287576458231; Wed, 20 Oct 2010 05:07:38 -0700 (PDT) Received: by 10.213.33.131 with HTTP; Wed, 20 Oct 2010 05:07:38 -0700 (PDT) In-Reply-To: References: Date: Wed, 20 Oct 2010 07:07:38 -0500 Message-ID: Subject: Re: [FlyRotary] Re: header parts source From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0015174be3926a00c404930b41db --0015174be3926a00c404930b41db Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Tracy, I used inconel filler rod (which I had to purchase from an aerospace 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 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 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 < >> http://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 >> > > --0015174be3926a00c404930b41db Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable
Tracy,
=A0
I used=A0inconel filler rod (which I had to purchase from an aerospace= supply firm in California) and TIG welded my current inconel exhaust.=A0 W= elding 625 Inconel was about=A0the same as welding 321 SS, i.e. no special = skills requried.
=A0
Mark=A0S.=A0

On Tue, Oct 19, 2010 at 8:47 PM, Tracy <tracy@rotaryaviati= on.com> wrote:
IF you use thick enough material= , even mild steel will work.=A0 I used 321 for 2 reasons.=A0 You can go thi= nner with it than 304 and reduce the weight.=A0 I put 900+ hours on a set o= f headers made from .035 321 SS with no signs of deterioration (other than = the metal turning a dark color).=A0=A0 321 SS is the nicest welding alloy I= 've ever worked with.=A0 I tried welding Inconel 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 <JLuckey@pacbell.net> wrote:

I thought that p= eople 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 ma= x 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. =A0If so, that's great, because it's cheaper & more re= adily
available.



-----Original Message-----
From: Rota= ry 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. =A0= IIRC, I pinged them about a year
> ago and they did not carry 321 stainless=85
>
>

I a= lso bought bends from Columbia. =A0Their service and delivery was
excell= ent.

I don't see any mention of 321, but I wasn't really con= cerned about it.
Given the diameter of tube we have to use for
exhaust flow, and the thic= kness 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] h= eader parts source
>
>
>
> I have been happy with C= olumbia mandrel bending. =A0they make their own
> parts, family run, and significantly cheaper than burns.
> http://www.m= andrel-bends.com/catalog/
>
> last week I finally got the v= -band, another 90=B0, a flex joint, and
> muffler added to this header.
>
>
>
>
><= br>> KevinLane Carpentry
> www.KevinLaneCarpentry.com <http://www.KevinLaneCarp= entry.com>
>



--
Homepage: =A0http://www.flyrotary.com/
Archive and UnSub:
= http://mail.lancaironline.net:81/lists/flyrotary/List.html


--
Homepage: =A0http://www.flyrotary.com/
Archive an= d UnSub: =A0 http://mail.lancaironline.net:81/lists/flyrotary= /List.html


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