X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-iw0-f180.google.com ([209.85.214.180] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4363602 for flyrotary@lancaironline.net; Sat, 19 Jun 2010 18:42:20 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.180; envelope-from=msteitle@gmail.com Received: by iwn40 with SMTP id 40so689831iwn.25 for ; Sat, 19 Jun 2010 15:41:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=g2PLRcxbZs9nWauWxiA9RHqXvACa3na6Vd21/MAWamA=; b=Z4Zk+4hjsPICkUxNqMAqR2kBMi8VVReBWKGfFJ/WXtwifrJdbIzYsIQKrCiYIyOHDa UuYgFbIscZy1vkAVHlAe/q7xEnrfagvAXL7sQCceB82D2dx38l/3GxkdoAeZh4MoKYXm D9T+MTaiwO6wgGzXhX1c0XXq12IhszzzUiBtI= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=pXLv5h2wy8gQlNchssNg4ZcKhnQq+/PEiJuVnJ+4fwGX09UaUKnjrtws4OoasUL8ut LZ3lmJv4BOKyIvF1s1kZRXiJOicgIoi4GYq/kPpNc9NAxVUbvlMXTX+YYZfKm6TP5gNB yMoGYiEbSR4BD5IF9PudUhhqMAfaaAzJI0yZs= MIME-Version: 1.0 Received: by 10.231.170.3 with SMTP id b3mr3350941ibz.122.1276987304441; Sat, 19 Jun 2010 15:41:44 -0700 (PDT) Received: by 10.231.174.197 with HTTP; Sat, 19 Jun 2010 15:41:44 -0700 (PDT) In-Reply-To: References: Date: Sat, 19 Jun 2010 17:41:44 -0500 Message-ID: Subject: Re: [FlyRotary] Peripheral Port 13B Rotary Engine From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=001636c5a56ea9f668048969c667 --001636c5a56ea9f668048969c667 Content-Type: text/plain; charset=ISO-8859-1 Hi Bob, I installed a p-port 20b in my Lancair ES last December/January. While I have flown it some, I have mostly been reworking various systems. So, I have very little flight time on it as of June. I have fabricated a new slide-throttle and intake manifold, and built a new tangential exhaust. I'm currently installing a Renesis water pump and housing. But mostly, I've been racking my brain to figure out why I can't get over 5800 rpm. I suspect the exhaust and/or intake is too restrictive. Lynn H. has stated that p-port motors are very sensitive to exhaust back pressure. I am also looking into the ignition system as a possible culprit. I"ll probably end up building another exhaust system before it is said and done. As for the motor, it runs strong, in the rpm range where it does run. Right now it doesn't want to idle very smoothly, but then I don't spend much time idling. ;-) It would be nice to have a nice smooth idle. There are no leaks, oil or water, which I can't say for my first engine. Oil temps are a bit higher which would be expected with extra hp. Bottom line... would I go this route again. Probably not. There have been a number of "surprises" which I hadn't planned for, like the exhaust system. However, the p-port intake was a piece of cake to fabricate compared to building a 3-rotor side port intake. I did do one "economy cruise" speed run and found that I had picked up an amazing 10-12 kts over the side-port motor. By "economy cruise" I am referring to running WOT at 5200 rpm, M/T electric prop set to 1700 rpm. Old motor would cruise at 158-159 kts TAS. With the new motor I am seeing 170-172kts TAS. There may be more speed/hp there, if I can get it tuned correctly. Hope this helps, Mark On Sat, Jun 19, 2010 at 1:42 PM, Kelly Troyer wrote: > Bob, > You need to address this question to Mark Steitle who is flying his 20B P > port > in his Lancair ES in Austin..............I am not aware of anyone currently > flying a > P port 13B................ > > Kelly Troyer > "Dyke Delta"_13B ROTARY Engine > "RWS"_RD1C/EC2/EM2 > "Mistral"_Backplate/Oil Manifold > > > ------------------------------ > *From:* "Rogers, Bob J." > *To:* Rotary motors in aircraft > *Sent:* Fri, June 18, 2010 11:56:17 AM > *Subject:* [FlyRotary] Peripheral Port 13B Rotary Engine > > > > Is anyone flying with a Mazda 13B peripheral port engine? If so, how is > it working? Can you describe the advantages and disadvantages? > > > > Thanks, > > > > Bob Rogers > --001636c5a56ea9f668048969c667 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Bob,=A0

I installed a p-port 20b in my Lancair ES las= t December/January. =A0While I have flown it some, I have mostly been rewor= king various systems. =A0So, I have very little flight time on it as of Jun= e. =A0I have fabricated a new slide-throttle and intake manifold, and built= a new tangential exhaust. =A0I'm currently installing a Renesis water = pump and housing. =A0But mostly, I've been racking my brain to figure o= ut why I can't get over 5800 rpm. =A0I suspect the exhaust and/or intak= e is too restrictive. =A0Lynn H. has stated that p-port motors are very sen= sitive to exhaust back pressure. =A0I am also looking into the ignition sys= tem as a possible culprit. =A0I"ll probably end up building another ex= haust system before it is said and done. =A0

As for the motor, it runs strong, in the rpm range wher= e it does run. =A0Right now it doesn't want to idle very smoothly, but = then I don't spend much time idling. =A0;-) =A0 It would be nice to hav= e a nice smooth idle. =A0

There are no leaks, oil or water, which I can't say= for my first engine.

Oil temps are a bit higher w= hich would be expected with extra hp. =A0

Bottom l= ine... would I go this route again. =A0Probably not. =A0There have been a n= umber of "surprises" which I hadn't planned for, like the exh= aust system. =A0However, the p-port intake was a piece of cake to fabricate= compared to building a 3-rotor side port intake.

I did do one "economy cruise" speed run and f= ound that I had picked up an amazing 10-12 kts over the side-port motor. = =A0By "economy cruise" I am referring to running WOT at 5200 rpm,= M/T electric prop set to 1700 rpm. =A0Old motor would cruise at 158-159 kt= s TAS. =A0With the new motor I am seeing 170-172kts TAS. =A0There may be mo= re speed/hp there, if I can get it tuned correctly. =A0

Hope this helps,
Mark

=A0=A0

On Sat, Jun 19, 2010 at 1:42 PM,= Kelly Troyer <keltr= o@att.net> wrote:
Bob,
=A0 You need to address this question to Mark Steitle who is flying hi= s 20B=A0P port
in his Lancair ES in Austin..............I am not aware of anyone curr= ently flying a
P port 13B................
=A0
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
&= quot;RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold= =20


From: "Rogers, Bob J.&q= uot; <BRogers@FDIC.gov>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Fri, June 18, 2010 11:= 56:17 AM
Subject: [FlyRot= ary] Peripheral Port 13B Rotary Engine

=A0

Is anyone flying wit= h a Mazda 13B peripheral port engine?=A0 If so, how is it work= ing?=A0 Can you describe the advantages and disadvantages?

=A0

Thanks,

=A0

Bob Rogers


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