X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail17.syd.optusnet.com.au ([211.29.132.198] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTPS id 2779361 for flyrotary@lancaironline.net; Thu, 06 Mar 2008 00:15:51 -0500 Received-SPF: pass receiver=logan.com; client-ip=211.29.132.198; envelope-from=lendich@optusnet.com.au Received: from george (d58-108-80-13.dsl.nsw.optusnet.com.au [58.108.80.13]) by mail17.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id m265F093029268 for ; Thu, 6 Mar 2008 16:15:02 +1100 Message-ID: <003701c87f49$07ae9040$0d506c3a@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Exhaust Wrap was [FlyRotary] Re: Exhaust? Date: Thu, 6 Mar 2008 15:14:52 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0034_01C87F9C.D8414100" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0034_01C87F9C.D8414100 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mike, I purchased some material used by the council buses to fire protect and = reduce noise, it was a reasonably thick 3/16" woven material. Not sure = what it was! I put it under the hood of my old Landcruiser as the paint = was burning off. I knew it would get pretty dirty under there so I got a = tube of silicon and spread it over the entire surface front and back and = tried to force it into the weave material as much as possible. This = protected the material from dirt and moisture ( weight) and helped with = the heat protection - I stuck it on with the same silicon. Just some suggestions!! George ( down under) What's not to like? This is easy on straight sections but not so where = the pipe curves. Would be really tough to shield my exhaust like this. I = havent tested anything like this but suspect that it is not as effective = an insulator as the wrap or some other sort of barrier (like the Zetex = or Fiberfrax). My exhaust is made of .060 mandrel bent 321 stainless and coated in = and out with a 2000 degree ceramic coating. So not sure how relavent the = comparisons to wrapped mild steel are. I agree with the inspection = related comments. But would like to hear from anyone who has used the = tape in an aircraft install where the high heat is constant, on a = comparable exhaust (i.e. 321 stainless). The real issue here is my cowl is close. And after all the work to = make it the prospect of burning it up isnt an option. Lesson learned is = to make sure ALL engine work including fabrication of exhaust is = complete before making a cowl. But that ship has sailed so now I'm = looking at ways to recover. The simple shields that Lynn proposed will = leave too many gaps and too much potential for cooking the cowl. The Zetex looks like a possible answer if I can find a source other = than the manufacturer that has small quantities available. Anybody have any experience with Fiberfrax (Aircraft Spruce sells it; = claims its good to 2200 degrees)? Mike ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Wednesday, March 05, 2008 1:45 PM Subject: [FlyRotary] Re: Exhaust Wrap was [FlyRotary] Re: Exhaust?=20 I think that's what the Doctor ordered, Lynn Simple, effective, light weight, permits inspection, relatively = inexpensive, can be easily removed, does not cause deterioration of the = tubing, can be done in home work shop. =20 What's not to like {:>) Ed ----- Original Message -----=20 From: Lehanover@aol.com=20 To: Rotary motors in aircraft=20 Sent: Wednesday, March 05, 2008 3:20 PM Subject: [FlyRotary] Re: Exhaust Wrap was [FlyRotary] Re: Exhaust? = OK, How about this.=20 A shield in .015" stainless. The tabs can be bent inboard to take = up less space. The air gap can be as little as 1/2". Only needed on the = side where some protection is required. Very light. Can be wired on = instead of hose clamps. Removable for tubing inspection.=20 Lynn E. Hanover In a message dated 3/5/2008 11:06:41 A.M. Eastern Standard Time, = eanderson@carolina.rr.com writes: I just do not think any sort of exhaust wrap belongs in an = aircraft. It might work just fine - but, if it does not........., = ..but, just my opinion. Ed -------------------------------------------------------------------------= - It's Tax Time! Get tips, forms and advice on AOL Money & Finance. -------------------------------------------------------------------------= - -------------------------------------------------------------------------= - -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.516 / Virus Database: 269.21.5/1314 - Release Date: = 5/03/2008 6:38 PM ------=_NextPart_000_0034_01C87F9C.D8414100 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Mike,
I purchased some material used by the council buses to fire protect = and=20 reduce noise, it was a reasonably thick 3/16" woven material. Not sure = what it=20 was! I put it under the hood of my old Landcruiser as the paint was = burning off.=20 I knew it would get pretty dirty under there so I got a tube of silicon = and=20 spread it over the entire surface front and back and tried to force it = into the=20 weave material as much as possible. This protected the material from = dirt and=20 moisture ( weight) and helped with the heat protection - I stuck it on = with the=20 same silicon.
Just some suggestions!!
George ( down under)
What's not to like? This is easy on straight sections but not so = where=20 the pipe curves. Would be really tough to shield my exhaust like = this. I=20 havent tested anything like this but suspect that it is not as = effective an=20 insulator as the wrap or some other sort of barrier (like the Zetex or = Fiberfrax).
 
My exhaust is made of .060 mandrel bent 321 stainless and coated = in and=20 out with a 2000 degree ceramic coating. So not sure how relavent the=20 comparisons to wrapped mild steel are. I agree with the inspection = related=20 comments. But would like to hear from anyone who has used the tape in = an=20 aircraft install where the high heat is constant, on a comparable = exhaust=20 (i.e. 321 stainless).
 
The real issue here is my cowl is close. And after all the work = to make=20 it the prospect of burning it up isnt an option. Lesson learned is to = make=20 sure ALL engine work including fabrication of exhaust is complete = before=20 making a cowl. But that ship has sailed so now I'm looking at ways to = recover.=20 The simple shields that Lynn proposed will leave too many gaps and too = much=20 potential for cooking the cowl.
 
The Zetex looks like a possible answer if I can find a source = other than=20 the manufacturer that has small quantities available.
 
Anybody have any experience with Fiberfrax (Aircraft Spruce sells = it;=20 claims its good to 2200 degrees)?
 
Mike
----- Original Message -----
From:=20 Ed Anderson
To: Rotary motors in = aircraft=20
Sent: Wednesday, March 05, = 2008 1:45=20 PM
Subject: [FlyRotary] Re: = Exhaust Wrap=20 was [FlyRotary] Re: Exhaust?

I think that's what the Doctor ordered, = Lynn
 
Simple, effective, light weight, permits = inspection,=20 relatively inexpensive, can be easily removed, does not cause = deterioration=20 of the tubing, can be done in home work shop. 
 
 
What's not to like {:>)
 
Ed
 
 
----- Original Message -----
From:=20 Lehanover@aol.com
To: Rotary motors in = aircraft=20
Sent: Wednesday, March 05, = 2008 3:20=20 PM
Subject: [FlyRotary] Re: = Exhaust Wrap=20 was [FlyRotary] Re: Exhaust?

OK, How about this.
 
A shield in .015" stainless. The tabs can be bent inboard to = take up=20 less space. The air gap can be as little as 1/2". Only needed on = the side=20 where some protection is required. Very light. Can be wired on = instead of=20 hose clamps. Removable for tubing inspection.
 
Lynn E. Hanover
 
 
 
In a message dated 3/5/2008 11:06:41 A.M. Eastern Standard = Time,=20 eanderson@carolina.rr.com writes:
I just do not think any sort of exhaust wrap = belongs=20 in an aircraft.  It might work just fine - but, if it does=20 not........., ..but, just my opinion.
 
Ed



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No virus found in this incoming message.
Checked by AVG Free = Edition.
Version: 7.5.516 / Virus Database: 269.21.5/1314 - = Release Date:=20 5/03/2008 6:38 PM
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