X-Virus-Scanned: clean according to Sophos on Logan.com From: "Ed Anderson" Received: from [107.14.166.225] (HELO cdptpa-oedge-vip.email.rr.com) by logan.com (CommuniGate Pro SMTP 6.1.4) with ESMTP id 7903088 for flyrotary@lancaironline.net; Mon, 10 Aug 2015 11:04:41 -0400 Received-SPF: pass receiver=logan.com; client-ip=107.14.166.225; envelope-from=eanderson@carolina.rr.com Return-Path: Received: from [71.75.143.5] ([71.75.143.5:55326] helo=EdPC) by cdptpa-oedge01 (envelope-from ) (ecelerity 3.5.0.35861 r(Momo-dev:tip)) with ESMTP id A5/30-04061-76DB8C55; Mon, 10 Aug 2015 15:04:07 +0000 Message-ID: To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Exhaust and note on Marcotte Re-drive Date: Mon, 10 Aug 2015 11:04:07 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0034_01D0D35C.4745E7C0" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 16.4.3528.331 X-MimeOLE: Produced By Microsoft MimeOLE V16.4.3528.331 X-RR-Connecting-IP: 107.14.168.118:25 X-Cloudmark-Score: 0 This is a multi-part message in MIME format. ------=_NextPart_000_0034_01D0D35C.4745E7C0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable I did the same thing, John, and also found that it changed the note (if = not the volume) of the exhaust sound to a less harsh tone. =20 Ed From: John Downing=20 Sent: Monday, August 10, 2015 9:55 AM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Exhaust and note on Marcotte Re-drive Here is something I tried on the exhaust. I have the turbo 11 muffler = and I added the exhaust extension which has 3 rows of holes, 8 holes = long, the holes are 1/2" with 1/2"s between holes, I inserted a 1/2 inch = rod in the holes and gave them a slight bend by moving the top of rod to = the rear. Extension is pinched down to 1 1/8th inch a outlet. Approx. = distance from engine is 26" to muffler, 24" of muffler and 12 " to end = of tailpipe, the tailpipe ends mid seat position on the Wittman W-10. = This addition seems to remove the nasty snarl of the exhaust in the = cabin. It would be interesting to remove muffler and try 36 inches of = pipe with holes to see what the effect would be, but at 79 years of age = I may never get to this unless the inside of the muffler starts to come = apart. One a side note the Marcotte re-drive with the seal retainer and a grove = machined under the bearings for the prop shaft to relief the lube = pressure on the seal retainer is working well. The Marcotte has a self = contained lubrication system with 80W hypoid. The temperature sensor = installed indicates 180 degree, I purchased a power steering cooler to = install, but at this time I don't think it is needed. 13B installed in = Wittman W-10 Tailwind. JohnD -------------------------------------------------------------------------= ------- -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html -------------------------------------------------------------------------= ------- No virus found in this message. Checked by AVG - www.avg.com Version: 2015.0.6086 / Virus Database: 4392/10410 - Release Date: = 08/10/15 ------=_NextPart_000_0034_01D0D35C.4745E7C0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I did the same thing, John, and also found that it changed the note = (if not=20 the volume) of the exhaust sound to a less harsh tone. 
 
Ed
 
Sent: Monday, August 10, 2015 9:55 AM
Subject: [FlyRotary] Exhaust and note on Marcotte=20 Re-drive
 
Here is something I tried on the = exhaust.  I=20 have the turbo 11 muffler and I added the exhaust extension which has 3 = rows of=20 holes, 8 holes long, the holes are 1/2" with 1/2"s between holes, I = inserted a=20 1/2 inch rod in the holes and gave them a slight bend by moving the top = of rod=20 to the rear. Extension is pinched down to 1 1/8th inch a outlet.  = Approx.=20 distance from engine is 26" to muffler, 24" of muffler and 12 " to end = of=20 tailpipe, the tailpipe ends mid seat position on the Wittman W-10.  = This=20 addition seems to remove the nasty snarl of the exhaust in the = cabin.  It=20 would be interesting to remove muffler and try 36 inches of pipe with = holes to=20 see what the effect would be, but at 79 years of age I may never get to = this=20 unless the inside of the muffler starts to come apart.
One a side note the Marcotte re-drive = with the seal=20 retainer and a grove machined under the bearings for the prop shaft to = relief=20 the lube pressure on the seal retainer is working well.  The = Marcotte has a=20 self contained lubrication system with 80W hypoid.  The temperature = sensor=20 installed indicates 180 degree, I purchased a power steering cooler to = install,=20 but at this time I don't think it is needed.  13B installed in = Wittman W-10=20 Tailwind. JohnD

--
Homepage:  http://www.flyrotary.com/
Archive and=20 UnSub:  =20 http://mail.lancaironline.net:81/lists/flyrotary/List.html

No virus found in this=20 message.
Checked by AVG - www.avg.com
Version: 2015.0.6086 / = Virus=20 Database: 4392/10410 - Release Date:=20 08/10/15

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