Return-Path: Received: from smtpauth04.mail.atl.earthlink.net ([209.86.89.64] verified) by logan.com (CommuniGate Pro SMTP 4.3c2) with ESMTP id 793719 for flyrotary@lancaironline.net; Mon, 14 Mar 2005 20:47:56 -0500 Received-SPF: neutral receiver=logan.com; client-ip=209.86.89.64; envelope-from=jerryhey@earthlink.net Received: from [65.176.136.233] (helo=earthlink.net) by smtpauth04.mail.atl.earthlink.net with asmtp (Exim 4.34) id 1DB19J-000082-NH for flyrotary@lancaironline.net; Mon, 14 Mar 2005 20:47:11 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=simple; s=test1; d=earthlink.net; h=Date:Subject:Content-Type:Mime-Version:From:To:In-Reply-To:Message-Id:X-Mailer; b=splByRWVhFhsc+9mr1APJ903jmcxPJYRDNYJ/cGtLN65sOGaGf8iVoOAWbfy47mI; Date: Mon, 14 Mar 2005 20:48:23 -0500 Subject: Re: [FlyRotary] Re: peripheral ports Content-Type: multipart/alternative; boundary=Apple-Mail-13--599882106 Mime-Version: 1.0 (Apple Message framework v552) From: Jerry Hey To: "Rotary motors in aircraft" In-Reply-To: Message-Id: <513D8288-94F4-11D9-8892-0003931B0C7A@earthlink.net> X-Mailer: Apple Mail (2.552) X-ELNK-Trace: 8104856d7830ec6b1aa676d7e74259b7b3291a7d08dfec799d94937f768e7cfa2c53f43a1da35f77350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 65.176.136.233 --Apple-Mail-13--599882106 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=ISO-8859-1; format=flowed George, this reminds me of what Lynn said which was even if we put=20 the hole in the wrong place it will still run and make so much power=20 we will have to hang on, something to that effect. I really like=20 the idea that the p port is not so sensitive. That it does not have to=20= be done just right. Jerry On Monday, March 14, 2005, at 08:28 PM, George Lendich wrote: > Hello Richard, > Did you see my endhousing pattern? > =A0 > =46rom what I have gathered from you and Jerry is that you open with = the=20 > Le Mans and close 1.5" later and Jerry closes with the Le Mans and=20 > opens 1.5" earlier. > =A0 > So both might be fine, I just seen a little more chance for exhaust=20 > contamination for the early opening and am unsure if the later opening=20= > sees any compression with the 1.5" manifold tubes - which provide more=20= > velocity than the 2" . This velocity is more important=A0at idle(=20 > overcoming exhaust and backpressure)=A0and our RPM range around 6,000 = to=20 > 7,500 rpm.=A0 > George (down under) > > Richard, running my engine will be in late summer. It is a time and=20 > money thing. Both are in short supply.. Jerry > On Monday, March 14, 2005, at 09:32 PM, Richard Sohn wrote: > > Hi Jerry, my p-port opens the same as the LeMans with also 1,5=20 > opening, and still idles fine with just the carb. I am looking at=20 > closing it later than it is now for the final tuning, but I do not=20 > plan to open it any later. Believe me, I was surprised when I saw the=20= > engine run like that the first time. I think on the 13B housing(12A is=20= > running now) it looks like a 2" round port will=A0give me=A0about the = same=20 > characteristics. > How far are you away from running your engine? > =A0 > Richard Sohn > N-2071U > =A0 > =A0 > > ----- Original Message ----- > From: Jerry Hey > To: Rotary motors in aircraft > Sent: Monday, March 14, 2005 3:28 PM > Subject: [FlyRotary] Re: peripheral ports > > Hi Richard, my p port opens much later than the Leman's and it closes=20= > about the same. It is 1.5 dia so obviously it cannot match the plus=20 > two inch of the Leman's port as far as timing is concerned. If you=20 > want the actual degree for the opening and closing events I can dig=20 > them out for you no problem. I admire your work and intend to copy the=20= > one rotor next year. Jerry > > > On Monday, March 14, 2005, at 01:26 PM, Richard Sohn wrote: > > > > ----- Original Message ----- > From: Jerry Hey > To: Rotary motors in aircraft > Sent: Monday, March 14, 2005 5:33 AM > Subject: [FlyRotary] Re: peripheral ports > > > On Monday, March 14, 2005, at 08:02 AM, Paul wrote: > > > > Paul, all the companies you list sell housings with BIG p - ports and=20= > massive overlap. They are designed to develop tremendous hp at high=20 > rpm for racing. Of course they don't idle smoothly. These engines have=20= > nothing to do with the smaller, conservatively timed p ports that we=20= > wish to use as aircraft engines. Jerry > > Jerry, > > what are you calling consevatively timed p-ports? > Just want to see were I stand with mine. > > Richard Sohn > N-2071U > =A0 > > > > =A0 > > > > > > > > No virus found in this incoming message. > Checked by AVG Anti-Virus. > Version: 7.0.308 / Virus Database: 266.7.2 - Release Date: 3/11/2005 > --Apple-Mail-13--599882106 Content-Transfer-Encoding: quoted-printable Content-Type: text/enriched; charset=ISO-8859-1 George, this reminds me of what Lynn said which was even if we put the hole in the wrong place it will still run and make so much power we will have to hang on, something to that effect. I really like the idea that the p port is not so sensitive. That it does not have to be done just right. Jerry On Monday, March 14, 2005, at 08:28 PM, George Lendich wrote: ArialHello = Richard, ArialDid you see my endhousing pattern? =A0 Arial=46rom what I have gathered from you and Jerry is that you open with the Le Mans and close 1.5" later and Jerry closes with the Le Mans and opens 1.5" = earlier. =A0 ArialSo both might be fine, I just seen a little more chance for exhaust contamination for the early opening and am unsure if the later opening sees any compression with the 1.5" manifold tubes - which provide more velocity than the 2" . This velocity is more important=A0at idle( overcoming exhaust and backpressure)=A0and our RPM range around 6,000 to 7,500 = rpm.=A0 ArialGeorge (down = under) Richard, running my engine will be in late summer. It is a time and money thing. Both are in short supply.. Jerry On Monday, March 14, 2005, at 09:32 PM, Richard Sohn wrote: Hi Jerry, my p-port opens the same as the LeMans with also 1,5 opening, and still idles fine with just the carb. I am looking at closing it later than it is now for the final tuning, but I do not plan to open it any later. Believe me, I was surprised when I saw the engine run like that the first time. I think on the 13B housing(12A is running now) it looks like a 2" round port will=A0give me=A0about the = same characteristics. How far are you away from running your engine? =A0 Richard Sohn N-2071U =A0 =A0 ----- Original Message ----- From: Jerry Hey To: Rotary motors in aircraft Sent: Monday, March 14, 2005 3:28 PM Subject: [FlyRotary] Re: peripheral ports Hi Richard, my p port opens much later than the Leman's and it closes about the same. It is 1.5 dia so obviously it cannot match the plus two inch of the Leman's port as far as timing is concerned. If you want the actual degree for the opening and closing events I can dig them out for you no problem. I admire your work and intend to copy the one rotor next year. Jerry On Monday, March 14, 2005, at 01:26 PM, Richard Sohn wrote: ----- Original Message ----- From: Jerry Hey To: Rotary motors in aircraft Sent: Monday, March 14, 2005 5:33 AM Subject: [FlyRotary] Re: peripheral ports On Monday, March 14, 2005, at 08:02 AM, Paul wrote: Paul, all the companies you list sell housings with BIG p - ports and massive overlap. They are designed to develop tremendous hp at high rpm for racing. Of course they don't idle smoothly. These engines have nothing to do with the smaller, conservatively timed p ports that we wish to use as aircraft engines. Jerry Jerry, what are you calling consevatively timed p-ports? Just want to see were I stand with mine. Richard Sohn N-2071U =A0 =A0 < No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.7.2 - Release Date: 3/11/2005 = --Apple-Mail-13--599882106--