X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.123] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3751975 for flyrotary@lancaironline.net; Fri, 10 Jul 2009 07:23:39 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.123; envelope-from=eanderson@carolina.rr.com Received: from computername ([75.191.186.236]) by cdptpa-omta04.mail.rr.com with ESMTP id <20090710112300514.LTW2041@cdptpa-omta04.mail.rr.com> for ; Fri, 10 Jul 2009 11:23:00 +0000 From: "Ed Anderson" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Flowmaster Hushpower Report Date: Fri, 10 Jul 2009 07:25:33 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_007F_01CA012F.9CCA1320" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: AcoBB6NSwKTdQUwNTVKLGG7aIkO0BQASPD6w X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 In-Reply-To: Message-Id: <20090710112300514.LTW2041@cdptpa-omta04.mail.rr.com> This is a multi-part message in MIME format. ------=_NextPart_000_007F_01CA012F.9CCA1320 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hummm, I've had my two HushpowerII mufflers on for around two years now and can't tell of any deterioration. I've never noticed any of the stuff that you and Mark Steitle have found and the innards still seem in one piece. The difference is I use two HushpowerII mufflers perhaps reducing the exhaust stress on them? Plus Mark had three rotors pushing through one and you have the turbo - although I would think the turbo would absorb some/most of the stress. Let us know how the new muffler works out, Dave Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of David Leonard Sent: Thursday, July 09, 2009 10:39 PM To: Rotary motors in aircraft Subject: [FlyRotary] Flowmaster Hushpower Report For the last couple hundred hours I have been using a Flowmaster Hushpower II muffler. Also used by Tracy and some others I think. It is done. The outside held up wery well, but I reciently removed it and discovered that the insides have entirely disientigrated. Whatever they used as packing has turned to a heavy clay-like substance ratteling around in the bottom. She steel mesh is in pieces. I had been thinking that the plane was not as quiet as it seemed 2 years ago.. go figure. So I was thinking about one of the DNA Mufflers someone mentioned. They seemed nice because there is no packing, just steel dividers. Unfortunately, it is a little to big around to fit in my current set up. Instead, I ordered this muffler that also has steel innards but no packing: http://www.moroso.com/catalog/categorydisplay.asp?catcode=35054 It is nice because it is going to be smaller and lighter than the flowmaster (or the DNA), as well as less expensive - even the SS version that I ordered. Will report back in 2 years on its performance :-) -- David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net ------=_NextPart_000_007F_01CA012F.9CCA1320 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hummm, I’ve had my two = HushpowerII mufflers on for around two years now and can’t tell of any deterioration.  I’ve never noticed any of the stuff that you = and Mark Steitle have found and the innards still seem in one piece.  The difference = is I use two HushpowerII mufflers perhaps reducing the exhaust stress on = them?  Plus Mark had three rotors pushing through one and you have the turbo - = although I would think the turbo would absorb some/most of the = stress.

 

Let us know how the new muffler = works out, Dave

 

Ed

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of David Leonard
Sent: Thursday, July 09, = 2009 10:39 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] = Flowmaster Hushpower Report

 

For the last couple hundred hours I have been using a Flowmaster Hushpower II muffler.  Also used by Tracy and some others I = think.  It is done.  The outside held up wery well, but I reciently removed = it and discovered that the insides have entirely disientigrated.  Whatever = they used as packing has turned to a heavy clay-like substance ratteling = around in the bottom.  She steel mesh is in pieces.  I had been thinking that the plane was not as quiet as it seemed 2 years = ago..  go figure.

 

So I was thinking about one of the DNA Mufflers someone mentioned.  They seemed nice because there is no packing, just = steel dividers.  Unfortunately, it is a little to big around to fit in my current set up.   Instead, I ordered this muffler that = also has steel innards but no packing:

 

It is nice because it is going to be smaller and lighter than = the flowmaster (or the DNA), as well as less expensive - even the SS version = that I ordered.

 

Will report back in 2 years on its performance  :-)


--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net http://RotaryRoster.net

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