X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.23.0 (ClamAV engine v0.103.0) From: " eanderson@carolina.rr.com" Received: from [47.43.26.133] (HELO p-impout002.msg.pkvw.co.charter.net) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 1365418 for flyrotary@lancaironline.net; Thu, 01 Apr 2021 11:08:08 -0400 Received-SPF: pass receiver=logan.com; client-ip=47.43.26.133; envelope-from=eanderson@carolina.rr.com Received: from [192.168.1.7] ([66.26.208.242]) by cmsmtp with ESMTP id RyvHl9NcBOzbyRyvHlepvo; Thu, 01 Apr 2021 15:07:52 +0000 X-Authority-Analysis: v=2.3 cv=G/Fi7Os5 c=1 sm=1 tr=0 a=hG3epedDSl5lteqJAkiezQ==:117 a=hG3epedDSl5lteqJAkiezQ==:17 a=IkcTkHD0fZMA:10 a=o1OHuDzbAAAA:8 a=Ia-xEzejAAAA:8 a=pGLkceISAAAA:8 a=_6GpL_ENAAAA:8 a=7g1VtSJxAAAA:8 a=rtTnlEPfXaAcGtXT1WoA:9 a=lbjmh0-4Ipi-7txm:21 a=mzekJQ6CoCwRNjS3:21 a=QEXdDO2ut3YA:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=5YQ6H4ZxyGn-KoBYtt8s:22 a=Urk15JJjZg1Xo0ryW_k8:22 a=grOzbf7U_OpcSX4AJOnl:22 To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: MISTRAL Date: Thu, 01 Apr 2021 15:07:51 +0000 Message-Id: In-Reply-To: References: Reply-To: eanderson@carolina.rr.com User-Agent: eM_Client/8.1.1054.0 Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-CMAE-Envelope: MS4wfNjap1CPhSpQiHaaO+XCIlKUNMLHDZGogrGCaU3OiIDB5Art9k5ctbDvRR7e9Pyfv6orP7Rsg/7tYJDvLNy/rEfYRg3+VIAM9ndMrD6WZSh5cu6LZQvz f64Ot2kkq1SJIoKQ0KJI0J1VdgqiDizz+Ax81KPFRtsa5ySx2tXaDFAwiDFzaW7pTq+xgVIyQqQokw== Smaller dia may mean that airflow velocity is higher than in the=20 primaries and since the secondary valves open at higher rpms, the higher=20 airflow velocity may help stuff more air into the chamber give the=20 shorter duration the port is open at higher rpm. Just a WAG. Ed ------ Original Message ------ From: "Finn Lassen finn.lassen@verizon.net"=20 To: "Rotary motors in aircraft" Sent: 4/1/2021 8:48:31 AM Subject: [FlyRotary] Re: MISTRAL >Tracy remarked on my secondary runners being smaller diameter than primari= es and now I see the same here. > >If I recall correctly, when I calculated the area of the secondaries vs th= e area of the primaries (in the engine block) I got smaller secondaries tha= n primaries. > >What gives? > >Finn > >On 3/31/2021 9:44 PM, Kelly Troyer keltro@gmail.com wrote: >>Primary Runner length approximately........24 inches >>Primary Runner "OD" approximately.........1.40 inches >>Secondary Runner length approximately.....24 inches >>Secondary Runner "OD" approximately.......1.66 inches > > > >--- >This email has been checked for viruses by Avast antivirus software. >https://www.avast.com/antivirus > > >-- >Homepage: http://www.flyrotary.com/ >Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List= .html