X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-m24.mx.aol.com ([64.12.137.5] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1089842 for flyrotary@lancaironline.net; Wed, 03 May 2006 01:45:02 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.5; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-m24.mx.aol.com (mail_out_v38_r7.5.) id q.2f6.4a29586 (30738) for ; Wed, 3 May 2006 01:37:15 -0400 (EDT) From: WRJJRS@aol.com Message-ID: <2f6.4a29586.31899b8b@aol.com> Date: Wed, 3 May 2006 01:37:15 EDT Subject: Re: [FlyRotary] Re: Muffler cones To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1146634635" X-Mailer: 9.0 SE for Windows sub 5027 X-Spam-Flag: NO -------------------------------1146634635 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 5/2/2006 5:43:53 PM Pacific Standard Time, eanderson@carolina.rr.com writes: George, here was my idea of a muffler using cones. The center (smaller) tube is perforated with the cone attached to it. Room at the widest part of the cone and wall of outer tube for gas to pass. A variation was to have the cone extend to the outer tube wall and have all cones facing the header end of the muffler only permitting gas (and sound) through the perforated center tube. Ed Ed, If I might jump in here. This looks like it should work. The muffling won't be tremendous but it should really take the edge off. Bending the shock wave really takes something stout with the rotary, doesn't it? I think the spiro-flow might work and survive better though. (The one that looks like an auger trapped in a can.) I always worry about perf tube with the rotary, when it gets super hot it seems like the pulses try to tear it off like a perf paper! You really know what you're up against after the washers though so best of luck. Bil Jepson -------------------------------1146634635 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 5/2/2006 5:43:53 PM Pacific Standard Time,=20 eanderson@carolina.rr.com writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>George,=20 here was my idea of a muffler using cones. The center (smaller= )=20
tube is perforated with the cone attached to it. Room at the wid= est=20 part of
the cone and wall of outer tube for gas to pass. A varia= tion=20 was to have
the cone extend to the outer tube wall and have all cones=20 facing the header
end of the muffler only permitting gas (and sound)=20 through the perforated
center tube.

Ed
<= /DIV>

Ed, If I might jump in here.

This looks like it should work. The muffling won't be tremendous=20= but=20 it should really take the edge off. Bending the shock wave really takes=20 something stout with the rotary, doesn't it? I think the spiro-flow might wo= rk=20 and survive better though. (The one that looks like an auger trapped in a=20 can.) I always worry about perf tube with the rotary, when it gets sup= er=20 hot it seems like the pulses try to tear it off like a perf paper! You reall= y=20 know what you're up against after the washers though so best of luck.

Bil Jepson

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