X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp118.sbc.mail.re3.yahoo.com ([66.196.96.91] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with SMTP id 3752050 for flyrotary@lancaironline.net; Fri, 10 Jul 2009 08:15:10 -0400 Received-SPF: neutral receiver=logan.com; client-ip=66.196.96.91; envelope-from=bryanwinberry@bellsouth.net Received: (qmail 10432 invoked from network); 10 Jul 2009 12:14:34 -0000 Received: from unknown (HELO acer7fbfa7e2f7) (bryanwinberry@98.88.103.180 with login) by smtp118.sbc.mail.re3.yahoo.com with SMTP; 10 Jul 2009 12:14:33 -0000 X-YMail-OSG: G_PTD9QVM1k5JmWBH9SVYB9kY2F_Z2Znwxm1g4chew98i7cX33zMlBe29T0kP78q89sVXvrTBC86lPhLwxu.UoE1smv9M8Y4KrZQOyPrtCkEfCA6cySkStcv79fnqp9hzsbKYMH9B5V8ouyW72Fv_8ubMzK3Cu1P3E0fNpvktKMevSFpAJYwCQCjFR3jlMtIwIKuaCfDuDXChQbXmOggKKIXCzhd9MW6MVN2kHA2808RPb6R1LH7q8meHhbYgqFKyjnSGGuPppE7oxv8LN529kTdTnKblZ4vGeVSaBPaIpFuANaosp5M3bxi X-Yahoo-Newman-Property: ymail-3 From: "Bryan Winberry" To: "'Rotary motors in aircraft'" References: Subject: RE: [FlyRotary] Re: Flowmaster Hushpower Report Date: Fri, 10 Jul 2009 08:14:32 -0400 Message-ID: <2649C3EFFE90431B959171013DA03DCD@acer7fbfa7e2f7> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0018_01CA0136.75103A60" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcoBUOCPatlMU93VTNSP8DZUzsKLKQABo8Eg In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_0018_01CA0136.75103A60 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Ed, Is yours under the cowl? I'm thinking proximity to heat source is the primary factor here. Bryan Unless yours is under the cowl. In that case, it's the plugs up orientation that keeps yours cool :>) _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson Sent: Friday, July 10, 2009 7:26 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Flowmaster Hushpower Report 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_0018_01CA0136.75103A60 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Ed,

Is yours under the cowl? =  I’m thinking proximity to heat source is the primary factor = here.

Bryan

Unless yours is under the cowl. =  In that case, it’s the plugs up orientation that keeps yours cool = :>)

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson
Sent: Friday, July 10, = 2009 7:26 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Flowmaster Hushpower Report

 

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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