X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from access.aic-fl.com ([204.49.76.2] verified) by logan.com (CommuniGate Pro SMTP 5.1.2) with ESMTP id 1551518 for flyrotary@lancaironline.net; Fri, 10 Nov 2006 09:09:16 -0500 Received-SPF: softfail receiver=logan.com; client-ip=204.49.76.2; envelope-from=unicorn@gdsys.net Received: from b9k4u9 (unverified [204.49.76.59]) by access.aic-fl.com (Rockliffe SMTPRA 4.5.6) with SMTP id for ; Fri, 10 Nov 2006 08:06:18 -0600 Message-ID: <001c01c704e2$d1f1e740$3b4c31cc@b9k4u9> From: "Richard Sohn" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: P Porting template? Date: Fri, 10 Nov 2006 08:10:45 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0017_01C7049F.B90B86C0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 This is a multi-part message in MIME format. ------=_NextPart_000_0017_01C7049F.B90B86C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageEd,=20 On a 13B for P-P, you would not worry a lot about weight. Just convert = it the way it is.=20 Caution, I believe you should wait for the first P-P to get some air = time behind it before copying it.=20 Is Jerry going to be the first one? Richard Sohn N-2071U ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Thursday, November 09, 2006 5:32 PM Subject: [FlyRotary] Re: P Porting template? Hey, Richard, 260HP for a "P" port two rotary 13B would ..ah hem .. = be "acceptable". So let us know when the two rotor "P" housing are = ready {:>). =20 Ed ----- Original Message -----=20 From: Richard Sohn=20 To: Rotary motors in aircraft=20 Sent: Thursday, November 09, 2006 10:21 PM Subject: [FlyRotary] Re: P Porting template? Have been running the one rotor on p-port for a while. Aiming for = 115hp per rotor on 12A housings at 7500RPM(be happy with 100hp in the = end). These estimates should give 150hp for 13B housings, more likely = 130, making 260 for a 13B. I know this is worse than other p-port = proponents predict, but this is what I am working toward. If more power = (over stock) is the issue, p-port is the solution, also simplicity. I = have not found any real negatives, for air craft use, in it. Richard Sohn N-2071U ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Thursday, November 09, 2006 6:24 AM Subject: [FlyRotary] Re: P Porting template? Hey, all looking forward to your first flight in the 8, Rusty. = Fortunately on my trip to Louisiana and back I managed to find 100LL for = $3.25, but saw it as high as $4.60. Could be 75 cent /gallon different = from two different vendors on the same airfield. Certainly making me = consider going back to Mogas since its down to $2.08/gallon around here. Ed ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Thursday, November 09, 2006 9:08 AM Subject: [FlyRotary] Re: P Porting template? So my viewpoint is anybody who wants to experiment with "P" = ports should be encouraged to do so - we all learn from experimentation = - but, its not necessary if your objective is producing 160-170 HP. Ed=20 Couldn't agree more Ed. I still find PPorts interesting, and = have some used housings to play with, so it's definitely on my "one of = these days" list of things I want to try. If you're looking for a = power level that can be reached by either PPorts or side ports, the side = port road will be much easier to travel. =20 Cheers, Rusty (DAR inspection 11th, first flight 12th or 18th, = bankruptcy after filling up with 100LL) ------=_NextPart_000_0017_01C7049F.B90B86C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Ed,
 
On a 13B for P-P,  you would not = worry a lot=20 about weight. Just convert it the way it is.
Caution, I believe you should wait for = the first=20 P-P to get some air time behind it before copying it.
Is Jerry going to be the first = one?
 
Richard Sohn
N-2071U
 
 
----- Original Message -----
From:=20 Ed=20 Anderson
Sent: Thursday, November 09, = 2006 5:32=20 PM
Subject: [FlyRotary] Re: P = Porting=20 template?

Hey, Richard, 260HP for a "P" port two rotary = 13B=20  would ..ah hem .. be  "acceptable".  So let us know = when the=20 two rotor "P" housing are ready {:>). 
 
Ed
 
----- Original Message -----
From:=20 Richard Sohn=20
To: Rotary motors in = aircraft=20
Sent: Thursday, November 09, = 2006 10:21=20 PM
Subject: [FlyRotary] Re: P = Porting=20 template?

Have been running the one rotor on = p-port for a=20 while. Aiming for 115hp per rotor on 12A housings at 7500RPM(be = happy with=20 100hp in the end). These estimates should give 150hp for 13B = housings, more=20 likely 130, making 260 for a 13B. I know this is worse than other = p-port=20 proponents predict, but this is what I am working toward. If more = power=20 (over stock) is the issue, p-port is the solution, also simplicity. = I have=20 not found any real negatives, for air craft use, in it.
 
Richard = Sohn
N-2071U
 
 
----- Original Message ----- =
From:=20 Ed Anderson
To: Rotary motors in = aircraft=20
Sent: Thursday, November = 09, 2006=20 6:24 AM
Subject: [FlyRotary] Re: P = Porting=20 template?

Hey, all looking forward to your first = flight in the=20 8, Rusty.  Fortunately on my trip to Louisiana and back I = managed to=20 find 100LL for $3.25, but saw it as high as $4.60.  Could be = 75 cent=20 /gallon different from two different vendors on the same = airfield. =20 Certainly making me consider going back to Mogas since its down to = $2.08/gallon around here.
 
Ed
----- Original Message ----- =
From:=20 Russell=20 Duffy
To: Rotary motors in = aircraft=20
Sent: Thursday, November = 09, 2006=20 9:08 AM
Subject: [FlyRotary] Re: = P Porting=20 template?

So my viewpoint is anybody who wants to = experiment=20 with "P" ports should be encouraged to do so - we all learn from = experimentation - but, its not necessary if your objective is = producing=20 160-170 HP.
Ed 
 
Couldn't agree more Ed. =20 I still find PPorts interesting, and = have some=20 used housings to play with, so it's definitely on my "one of = these days"=20 list of things I want to try.   If you're looking = for a=20 power level that can be reached by either PPorts or side ports, = the side=20 port road will be much easier to travel.  =
 
Cheers,
Rusty=20 (DAR inspection 11th, first flight 12th or 18th, bankruptcy = after=20 filling up with 100LL)
 
 <= /DIV>
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