X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtpauth08.mail.atl.earthlink.net ([209.86.89.68] verified) by logan.com (CommuniGate Pro SMTP 5.0c2) with ESMTP id 715894 for flyrotary@lancaironline.net; Thu, 08 Sep 2005 16:42:21 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.68; envelope-from=jerryhey@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=dtE4Brl2c+1xPyQAdm6wqRvKcXOYAZnWz6RrDY8kuN6tJNxTq6p38Qhtgf2a9xHb; h=Received:Mime-Version:In-Reply-To:References:Content-Type:Message-Id:From:Subject:Date:To:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [71.49.145.5] (helo=[192.168.0.100]) by smtpauth08.mail.atl.earthlink.net with asmtp (Exim 4.34) id 1EDTDE-0007GD-2Q for flyrotary@lancaironline.net; Thu, 08 Sep 2005 16:41:37 -0400 Mime-Version: 1.0 (Apple Message framework v734) In-Reply-To: References: Content-Type: multipart/alternative; boundary=Apple-Mail-3--271306915 Message-Id: <33AB58BD-EA93-4D05-8F6E-7CB83C2CB170@earthlink.net> From: Jerry Hey Subject: Re: [FlyRotary] Re: flyrotary_Web_Archive Date: Thu, 8 Sep 2005 15:44:24 -0500 To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.734) X-ELNK-Trace: 8104856d7830ec6b1aa676d7e74259b7b3291a7d08dfec79ba52a8cf7af619cf4a2e7d71eca4700f350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 71.49.145.5 --Apple-Mail-3--271306915 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=WINDOWS-1252; delsp=yes; format=flowed Joe, there may indeed be a significant hp hit using the tangential. =20= However, I tried to make it totally free flowing without any back pressure at all. I hope that will help. Of course This is a long =20 way from saying it scavenges. I don't think it will. On the other hand there is a significant drag and weight penalty =20 with hanging a spintech out in the air. Trying to fit everything =20 inside a cowl, forces compromises we would never consider otherwise. =20 At this time it is an experiment that needs to be tested in the real =20 world. We will soon know a lot more when Bob fires up his engine. If the tangential passes the sound test, then we can make a couple =20 of tuned straight pipes to run on the same engine and quantify the =20 effect on HP. I suppose we could even hang a spintech on it. How =20 much messing around can you stand, Bob? Jerry On Sep 8, 2005, at 3:08 PM, Joe Hull wrote: > After something Lynn Hanover said a while back I=92m not sure the =20 > Tangential muffler would be a good intermediary to another muffler. =20= > Apparently the length of the 2=94 exhaust manifold pipes coming from =20= > the rotor housing should be a wee bit longer than you generally =20 > have with a tangential (stuck up close the engine). My runners from =20= > housing to big 6=94 tube are only 4-5=94 long. I=92m afraid that may = hurt =20 > the total HP I generate and I=92m really more concerned about HP than =20= > Db=92s J > > > > Joe Hull > > Redmond (Seattle), Washington > > Cozy MkIV #991 (working on Engine & Electrical & Finishing) > > http://www.maddyhome.com/canardpages/pages/JoeHull/index.html > > > > From: Rotary motors in aircraft =20 > [mailto:flyrotary@lancaironline.net] On Behalf Of Don Walker > Sent: Thursday, September 08, 2005 12:56 PM > To: Rotary motors in aircraft > Subject: [FlyRotary] flyrotary_Web_Archive > > > > To Bob White, Jerry Hey and Joe Hull, > > Looking forward to you firing up your engines and seeing how well =20 > the Tangential muffler works. or doesn't work. If nothing else, it =20= > would make a good manifold to run out of to a SpinTech! Keep us =20 > all posted. I'll let you know Bob, when I figure out where the =20 > EC-1 will be placed on the firewall so we know the length of the =20 > wiring. > > Don Walker > > --Apple-Mail-3--271306915 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=WINDOWS-1252 Joe,=A0 there may indeed be a = significant hp hit using the tangential.=A0 However,=A0 I tried to make = it totally free flowing without any back
pressure at all.=A0 I hope = that will help.=A0 =A0Of course This=A0 is a long way from saying it = scavenges.=A0 I don't think it will.=A0

=A0On the other hand there = is a significant drag and weight=A0 =A0penalty with hanging a spintech = out in the air. Trying to fit everything inside a cowl, forces = compromises we would never consider otherwise.=A0At this time it is an = experiment that needs to be tested in the real world.=A0 We will soon = know a lot more when Bob fires=A0 up his engine.=A0

=A0If the tangential passes = the sound test, then we can make a couple of tuned straight pipes to run = on the same=A0 engine and quantify the effect on HP.=A0 I suppose we = could even hang a spintech=A0 on it. How much messing around can you = stand, Bob?=A0 =A0=A0 =A0Jerry



=A0=A0
On Sep = 8, 2005, at 3:08 PM, Joe Hull wrote:

After something Lynn = Hanover said a while back I=92m not sure the Tangential muffler would be = a good intermediary to another muffler. Apparently the length of the 2=94 = exhaust manifold pipes coming from the rotor housing should be a wee bit = longer than you generally have with a tangential (stuck up close the = engine). My runners from housing to big 6=94 tube are only 4-5=94 long. = I=92m afraid that may hurt the total HP I generate and I=92m really more = concerned about HP than Db=92s J

=A0

Joe HullRedmond (Seattle), Washington

Cozy MkIV #991 (working on Engine & Electrical & = Finishing)

=A0

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline= .net] Don = Walker
Thursday, = September 08, 2005 12:56 PM
To: Rotary motors in aircraft
[FlyRotary] = flyrotary_Web_Archive

=A0

To Bob White, Jerry Hey and Joe = Hull,

Looking forward to you firing up your engines and seeing = how well the Tangential muffler works. or doesn't work.=A0 If nothing = else, it would make a good manifold to run out of to a=A0SpinTech!=A0 = Keep us all posted.=A0 I'll let you know Bob, when I figure out where = the EC-1 will be placed on the firewall so we know the length of the = wiring.

Don Walker



= --Apple-Mail-3--271306915--