X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from exchange.carey.wa.edu.au ([118.82.44.212] verified) by logan.com (CommuniGate Pro SMTP 5.3.11) with ESMTPS id 4664384 for flyrotary@lancaironline.net; Wed, 05 Jan 2011 03:50:56 -0500 Received-SPF: none receiver=logan.com; client-ip=118.82.44.212; envelope-from=stevei@carey.asn.au Received: from exchange.carey.local ([10.10.0.5]) by exchange.carey.local ([10.10.0.5]) with mapi; Wed, 5 Jan 2011 16:49:49 +0800 From: To: Date: Wed, 5 Jan 2011 16:50:30 +0800 Subject: Re: [FlyRotary] Re: Intake manifold for 4 port Renesis Thread-Topic: [FlyRotary] Re: Intake manifold for 4 port Renesis Thread-Index: AcustYKVyN5rxBzgTceeTCGqyzg1vA== Message-ID: <59B5473F-3544-45BA-8421-45D325B42106@carey.asn.au> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_59B5473F354445BA842145D325B42106careyasnau_" MIME-Version: 1.0 --_000_59B5473F354445BA842145D325B42106careyasnau_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Thanks Dennis Is your setup a Renesis 4 port or previous 13B version. What dimensions did you use and calculate for? Also, in practice can you get a feel for a sweet RPM spot to compare with t= he calculations? Thanks Steve Izett On 02/01/2011, at 10:40 PM, > > wrote: Thanks Dennis Is your setup a Renesis 4 port or previous 13B version. What dimensions did you use and calculate for? Also, in practice can you get a feel for a sweet RPM spot to compare with t= he calculations? Thanks Steve Izett On 02/01/2011, at 8:22 AM, Dennis Havarlah wrote: Happy New Rotary Year to everyone. Steve, I've had a real hard time understanding the timing in some of the Mazda pap= ers because they say X deg. before TDC and than the next line will say Y d= eg. before BDC. I believe they are referencing TDC on the compression stro= ke and than BDC on the intake stroke! Of course if you can determine ho= w much the rotor turns in degrees the "E" shaft is just 3 times as much. When you are determining the time available for a FAW wave to travel from t= he closing of rotor #1's intake to the closing of rotor #2's intake the ro= tors 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 ful= l open to closed with very few degrees of rotation of the rotor. Dennis Haverlah ----- Original Message ----- From: stevei@carey.asn.au To: Rotary motors in aircraft Sent: Saturday, January 01, 2011 7:16 AM Subject: [FlyRotary] Intake manifold for 4 port Renesis Happy New year everyone. 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 kno= w 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 b= etween 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 th= e sender immediately and then delete/destroy the e-mail and any printed cop= ies. All liability for viruses is excluded to the fullest extent of the law= . --_000_59B5473F354445BA842145D325B42106careyasnau_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Thanks Dennis
Is your setup a Renesis 4 port or previous 13B version.
What dimensions did you use and calculate for?
Also, in p= ractice can you get a feel for a sweet RPM spot to compare with the calcula= tions?

Thanks

Steve Izett=
 On 02/01/2011, at 10:40 PM, <stevei@carey.asn.au> <stevei@carey.asn.au> wrote:

Thanks Denn= is

Is your setup a Renesis 4 port or previous 13B versio= n.
What dimensions did you use and calculate for?
Also,= in practice can you get a feel for a sweet RPM spot to compare with the ca= lculations?

Thanks

Steve = Izett
 

On 02/01/2011, at 8:22 AM, D= ennis Havarlah wrote:

Happy New Rotary Year to everyone.
 
Steve,
 
I've had a real hard time understan= ding the timing in some of the Mazda papers because they say  X deg. b= efore TDC and than the next line will say Y deg. before BDC.  I believ= e they are referencing TDC on the compression stroke and  than BDC&nbs= p;on the intake stroke!    Of course if you can determine ho= w much the rotor turns in degrees the "E" shaft is just 3 times as much.&nb= sp;
 
When you are determining the time availab= le for a FAW wave to travel from the closing of rotor  #1's intake&nbs= p;to the closing of rotor #2's intake the rotors turn 60 deg. and the "E" s= haft 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 whe= n the intake is still 50% or more open.  With the rotor and intake geo= metry that Mazda uses, the intake goes from almost full open to closed with= very few degrees of rotation of the rotor.
 
D= ennis Haverlah
&nbs= p;
 
----- Original Message -----
Sent: Saturday, January 01, 2011 7:16 AM
Subject:=  [FlyRotary] Intake manif= old for 4 port Renesis

Happy New year everyone.<= /span>

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 op= timally at the open port of the next rotor intake event?
<= span class=3D"Apple-style-span" style=3D"font-family: Arial; font-size: sma= ll; ">Should it arrive when the port is at its most open state or latter?
Also, can someone explain to me the timing in degree= s of E-shalf rotation between TDC and BDC (sorry if that is a dumb question= ).

Many thanks again t= o all on the list.

St= eve Izett
= Perth, Wester= n Australia

The contents of this email are confidential and intended only for the nam= ed recipients of this e-mail. If you have received this e-mail in error, yo= u are hereby notified that any use, reproduction, disclosure or distributio= n 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 c= opies. All liability for viruses is excluded to the fullest extent of the l= aw.
<= /font>

= --_000_59B5473F354445BA842145D325B42106careyasnau_--