X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp0.av-mx.com ([137.118.16.56] verified) by logan.com (CommuniGate Pro SMTP 5.3.8) with ESMTP id 4364005 for flyrotary@lancaironline.net; Sun, 20 Jun 2010 09:47:44 -0400 Received-SPF: pass receiver=logan.com; client-ip=137.118.16.56; envelope-from=res12@fairpoint.net Received: from main (unknown [209.105.170.154]) (Authenticated sender: res12@fairpoint.net) by smtp0.av-mx.com (Postfix) with ESMTP id 1B54F1C019B for ; Sun, 20 Jun 2010 09:47:07 -0400 (EDT) Message-ID: From: "Richard Sohn" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Peripheral Port 13B Rotary Engine Date: Sun, 20 Jun 2010 08:47:08 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0037_01CB1055.2AB6AAB0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5931 This is a multi-part message in MIME format. ------=_NextPart_000_0037_01CB1055.2AB6AAB0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Bob, I am not flying the PP engine yet, however I have a lot of running time = on the test stand. My engine is a single rotor with a 12A rotor and = rotor housing.=20 The latest tests showed a calculated power of 92hp at 6000RPM, which, = extrapolated to a 13B would give you close to 300hp @ 7500RPM.=20 Don't expect it to idle smooth much below 2000RPM. I am using a = substantial flywheel for preventing gear rattling at that RPM.=20 This engine has been running now, as it is, for about 6years on the test = stand without any engine related problems. It is ready to go in the = airplane. Compared to the 100hp SOOB I have been running in the airplane for 10 = years, using the same prop, it is producing at least some more power. If I had the size airplane for a 13B it would definitely be PP. FWIW. Richard Sohn N2071U ----- Original Message -----=20 From: Rogers, Bob J.=20 To: Rotary motors in aircraft=20 Sent: Friday, June 18, 2010 11:56 AM Subject: [FlyRotary] Peripheral Port 13B Rotary Engine =20 Is anyone flying with a Mazda 13B peripheral port engine? If so, how = is it working? Can you describe the advantages and disadvantages? =20 Thanks, =20 Bob Rogers ------=_NextPart_000_0037_01CB1055.2AB6AAB0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi Bob,
 
I am not flying the PP engine yet, = however I have a=20 lot of running time on the test stand. My engine is a single rotor with = a 12A=20 rotor and rotor housing.
The latest tests showed a calculated = power of 92hp=20 at 6000RPM, which, extrapolated to a 13B would give you close to 300hp @ = 7500RPM.
Don't expect it to idle smooth much = below 2000RPM.=20 I am using a substantial flywheel for preventing gear rattling at that = RPM.=20
 
This engine has been running now, as it = is, for=20 about 6years on the test stand without any engine related problems. It = is ready=20 to go in the airplane.
 
Compared to the 100hp SOOB I have been = running in=20 the airplane for 10 years, using the same prop, it is producing at least = some=20 more power.
 
If I had the size airplane for a 13B it = would=20 definitely be PP.
 
FWIW.
 
Richard Sohn
N2071U
----- Original Message -----
From:=20 Rogers, = Bob J.=20
Sent: Friday, June 18, 2010 = 11:56=20 AM
Subject: [FlyRotary] Peripheral = Port 13B=20 Rotary Engine

 

Is anyone = flying with=20 a Mazda 13B peripheral port engine? =20 If so, how is it working? =20 Can you describe the advantages and=20 disadvantages?

 

Thanks,

 

Bob=20 Rogers

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