X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail04.syd.optusnet.com.au ([211.29.132.185] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTPS id 1010832 for flyrotary@lancaironline.net; Wed, 22 Jun 2005 22:27:43 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.185; envelope-from=lendich@optusnet.com.au Received: from george (d220-236-0-190.dsl.nsw.optusnet.com.au [220.236.0.190]) by mail04.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id j5N2QtUe028289 for ; Thu, 23 Jun 2005 12:26:56 +1000 Message-ID: <001f01c5779b$0c249f10$be00ecdc@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: PP debate was Re: Single PP HP? Date: Thu, 23 Jun 2005 12:27:05 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001C_01C577EE.DD82B620" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_001C_01C577EE.DD82B620 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ho-dy, ho, ho, ho, - there Rusty! While Lynn seems to love PP for racing, I'm not sure I've seen him state = that he thinks it's the best way to go for aircraft. How about it Lynn, = for, or against PP for aircraft use? =20 Either side port (Bridgeport) or Pport will work just fine for = aircraft use. This is your lucky day. I have a tube frame with a first Gen body and = a factory Pport engine. It has a Weaver Brothers external pressure pump, = but the front iron is intact, so you could go back to the stock pump if = you like. It has a trans but no rear end. Needs a Speedway or similar = quickchange. A nice trailer is included.=20 The Pport has shorter intake timing than the "J" Bridgeport engine. It = idles much slower than the Bridgeport engine and has power a bit lower = in the RPM range than the Bridgeport. It is not difficult to drive around the paddock with a tall first = gear. The Bridgeport is a nasty mess to drive around, and has around 3 = HP until it get wound up a bit.The Pport is also still making power = right through 10,000 RPM if that ever comes up. This is a 12-A Pport = with about 300 HP at 10,000. The home built 13B Pport could be much better. It is just too easy to = build. As I pointed out with the 12A data at 7,500 212 HP and that = engine has the intake tuned to give best power at 9,400 RPM. Those are = real Ohio HP. Not those little California HP used to sell race engines.=20 A well done 13B Pport with very mild exhaust work should have 230 to = 250 continuous at 7,500 RPM. Plan fuel pickups for a 45 degree climb = angle. If you only need 220 HP then the side port is quick and easy also. Lynn E. Hanover ------=_NextPart_000_001C_01C577EE.DD82B620 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Ho-dy, ho, ho, ho, - there = Rusty!

While = Lynn seems=20 to love PP for racing, I'm not sure I've seen him state that = he thinks=20 it's the best way to go for aircraft. How about it Lynn, for, or = against=20 PP for aircraft use?

Either side port (Bridgeport) or Pport will work just fine for = aircraft=20 use.

This is your lucky day. I have a tube frame with a first = Gen body=20 and a factory Pport engine. It has a Weaver Brothers external pressure = pump,=20 but the front iron is intact, so you could go back to the stock pump = if you=20 like. It has a trans but no rear end. Needs a Speedway or similar = quickchange.=20 A nice trailer is included.

The Pport has shorter intake timing than the "J" Bridgeport = engine. It=20 idles much slower than the Bridgeport engine and has power a bit lower = in the=20 RPM range than the Bridgeport.

It is not difficult to drive around the paddock with a tall first = gear.=20 The Bridgeport is a nasty mess to drive around, and has around 3 HP = until it=20 get wound up a bit.The Pport is also still making power right = through=20 10,000 RPM if that ever comes up. This is a 12-A Pport with about 300 = HP at=20 10,000.

The home built 13B Pport could be much better. It is just too = easy to=20 build. As I pointed out with the 12A data at 7,500 212 HP and that = engine has=20 the intake tuned to give best power at 9,400 RPM. Those are real Ohio = HP. Not=20 those little California HP used to sell race engines.

A well done 13B Pport with very mild exhaust work should have 230 = to 250=20 continuous at 7,500 RPM. Plan fuel pickups for a 45 degree climb = angle.

If you only need 220 HP then the side port is quick and easy = also.

Lynn E. Hanover

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