X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122] verified) by logan.com (CommuniGate Pro SMTP 5.3.11) with ESMTP id 4661087 for flyrotary@lancaironline.net; Sat, 01 Jan 2011 19:23:00 -0500 Received-SPF: pass receiver=logan.com; client-ip=71.74.56.122; envelope-from=clouduster@austin.rr.com Return-Path: X-Authority-Analysis: v=1.1 cv=UQuFHoD2CPQ248x8AXEbKhr4z9AaDqApxmEl3BhfZ64= c=1 sm=0 a=JGkpzbdMJwcA:10 a=04I7FWNrTfP4RHm++yk/MQ==:17 a=T0KyxLB9dR4fZiUepUMA:9 a=bf7V9IxQITcLLPIGSXgA:7 a=T2WT7E-usuWcknFtIuPhGxQzaB8A:4 a=wPNLvfGTeEIA:10 a=Ia-xEzejAAAA:8 a=cdWFkl1lX2GnyU6KYecA:9 a=kSUfsNlXo6EhaSZVvwAA:7 a=gVeaUfguSS7JqfVsSfC8IHtgS6MA:4 a=EzXvWhQp4_cA:10 a=04I7FWNrTfP4RHm++yk/MQ==:117 X-Cloudmark-Score: 0 X-Originating-IP: 70.113.14.52 Received: from [70.113.14.52] ([70.113.14.52:51892] helo=DWHPC) by hrndva-oedge02.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id 8C/64-00963-145CF1D4; Sun, 02 Jan 2011 00:22:25 +0000 Message-ID: <25148BABB1D04DD6A9A9704BE677F70D@DWHPC> From: "Dennis Havarlah" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Intake manifold for 4 port Renesis Date: Sat, 1 Jan 2011 18:22:23 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_01D2_01CBA9E0.D5C38480" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18263 This is a multi-part message in MIME format. ------=_NextPart_000_01D2_01CBA9E0.D5C38480 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Happy New Rotary Year to everyone. Steve,=20 I've had a real hard time understanding the timing in some of the Mazda = papers because they say X deg. before TDC and than the next line will = say Y deg. before BDC. I believe they are referencing TDC on the = compression stroke and than BDC on the intake stroke! Of course if = you can determine how much the rotor turns in degrees the "E" shaft is = just 3 times as much. =20 When you are determining the time available for a FAW wave to travel = from the closing of rotor #1's intake to the closing of rotor #2's = intake the rotors turn 60 deg. and the "E" shaft turns 180 deg. You = asked how far open should the intake on rotor #2 be when the FAW arrives = - I do not know - but I'd want it to arrive when the intake is still 50% = or more open. With the rotor and intake geometry that Mazda uses, the = intake goes from almost full open to closed with very few degrees of = rotation of the rotor. Dennis Haverlah ----- Original Message -----=20 From: stevei@carey.asn.au=20 To: Rotary motors in aircraft=20 Sent: Saturday, January 01, 2011 7:16 AM Subject: [FlyRotary] Intake manifold for 4 port Renesis Happy New year everyone.=20 I noted Dennis Haverlah had re worked his intake and I wondered who on = the list has done the math. I've done it myself using Mark Warners "Street Rotary", however I = don't know enough about when the reflected wave should arrive optimally = at the open port of the next rotor intake event? Should it arrive when the port is at its most open state or latter? Also, can someone explain to me the timing in degrees of E-shalf = rotation between TDC and BDC (sorry if that is a dumb question). Many thanks again to all on the list. Steve Izett Perth, Western Australia -------------------------------------------------------------------------= ----- The contents of this email are confidential and intended only for the = named recipients of this e-mail. If you have received this e-mail in = error, you are hereby notified that any use, reproduction, disclosure or = distribution or the information contained in this e-mail is prohibited. = Please notify the sender immediately and then delete/destroy the e-mail = and any printed copies. All liability for viruses is excluded to the = fullest extent of the law. ------=_NextPart_000_01D2_01CBA9E0.D5C38480 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Happy New Rotary Year to = everyone.
 
Steve,
 
I've had a real hard time understanding = the timing=20 in some of the Mazda papers because they say  X deg. before TDC and = than=20 the next line will say Y deg. before BDC.  I believe they are = referencing=20 TDC on the compression stroke and  than BDC on the intake=20 stroke!    Of course if you can determine how much the = rotor=20 turns in degrees the "E" shaft is just 3 times as much.  =
 
When you are determining the time = available for a=20 FAW wave to travel from the closing of rotor  #1's intake to = the=20 closing of rotor #2's intake the rotors turn 60 deg. and the "E" shaft = turns 180=20 deg.  You asked how far open should the intake on rotor #2 be when = the FAW=20 arrives - I do not know - but I'd want it to arrive when the intake is = still 50%=20 or more open.  With the rotor and intake geometry that Mazda uses, = the=20 intake goes from almost full open to closed with very few degrees of = rotation of=20 the rotor.
 
Dennis Haverlah
 
 
----- Original Message -----
From:=20 stevei@carey.asn.au
Sent: Saturday, January 01, = 2011 7:16=20 AM
Subject: [FlyRotary] Intake = manifold for=20 4 port Renesis

Happy New year everyone.=20

I noted Dennis Haverlah had re worked his = intake and I=20 wondered who on the list has done the math.
I've done it myself using Mark Warners = "Street Rotary",=20 however I don't know enough about when the reflected wave should = arrive=20 optimally at the open port of the next rotor intake = event?
Should it arrive when the port is at its most = open=20 state or latter?
Also, can someone explain to me the timing in = degrees=20 of E-shalf rotation between TDC and BDC (sorry if that is a dumb=20 question).

Many thanks again to all on the = list.

Steve Izett
Perth, Western Australia


The contents of this email = are confidential=20 and intended only for the named recipients of this e-mail. If you have = received this e-mail in error, you are hereby notified that any use,=20 reproduction, disclosure or distribution or the information contained = in this=20 e-mail is prohibited. Please notify the sender immediately and then=20 delete/destroy the e-mail and any printed copies. All liability for = viruses is=20 excluded to the fullest extent of the = law.
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