X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from poplet2.per.eftel.com ([203.24.100.45] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3858285 for flyrotary@lancaironline.net; Fri, 18 Sep 2009 03:22:13 -0400 Received-SPF: none receiver=logan.com; client-ip=203.24.100.45; envelope-from=lendich@aanet.com.au Received: from sv1-1.aanet.com.au (sv1-1.per.aanet.com.au [203.24.100.68]) by poplet2.per.eftel.com (Postfix) with ESMTP id 09F631738BA for ; Fri, 18 Sep 2009 15:21:36 +0800 (WST) Received: from ownerf1fc517b8 (203.171.92.134.static.rev.aanet.com.au [203.171.92.134]) by sv1-1.aanet.com.au (Postfix) with SMTP id 5A9EFBEC067 for ; Fri, 18 Sep 2009 15:21:36 +0800 (WST) Message-ID: From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Three or two? Date: Fri, 18 Sep 2009 17:21:41 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0049_01CA3884.7CF46370" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5843 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-Antivirus: avast! (VPS 090917-0, 09/17/2009), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0049_01CA3884.7CF46370 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bill, Good on Ya! I'm a bit behind my e-mails BTW. I have a great solution for the PP problems of leaking coolant. I notice = that PL advocates welding to the inner rotor steel liner - however not = much to weld to, and then pressurizes the resin filler. Now this is not my idea but it sis working well locally and that is to = weld a Al tube to the inner Al housing - weld it rights around and then = fill the remainder with resin. Seems to work much better than what was = done previously and ahs held up in well in racing applications.=20 George ( down under) ----- Original Message -----=20 From: WRJJRS@aol.com=20 To: Rotary motors in aircraft=20 Sent: Monday, September 07, 2009 5:06 AM Subject: [FlyRotary] Re: Three or two? Gonzalo, Sorry to be contrary, but in my opinion the ONLY way to go for a = flying rotary is P-port. All of the original Power Sport engines (the = Everette Hatch P.S.) ran P-ports. The manifolding for a P-port engine is = vastly easier. In fact Hatch and Steve Beckham built several engines = with P-ports that even ran reverse rotation so they could get proper = propeller rotation with some gearboxes. You can even P-port an Renesis = and it still works. The reason that Mazda isn't P-porting their race = cars has nothing to do with if P-porting is better, it is racing = organizations requirements. The reason for the side port Renesis is for = emissions and low RPM fuel economy. Those are areas that are only = important in a CAR. The typical aircraft runs 50% to 90% ALL THE TIME = and P-ports are much better at mid to high RPMS. The Mazda Le Mans = winning engine used P-ports and they were running with a fuel economy = formula. (the fuel was limited) For high output P-ports just work = better. Bill Jepson Gonzalo, A lot of people talk about peripheral porting rotaries but nobody is = doing it with a rotary that they plan to fly behind. If it was such a = good thing, Mazda would be P-Porting their cars. Instead they are going = away even from the peripheral port for the exhaust with the Renesis. =20 If 200 HP will do it for you the Renesis is the way to go. This = process of putting an alternative engine in a plane is hard enough = without violating the KISS principle. Put in a Renesis, no turbo, no P-Port. Bill B =20 -------------------------------------------------------------------------= --- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of George Lendich Sent: Sunday, August 23, 2009 5:57 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Three or two? =20 Gonzalo, I don't know if the Renesis has a turbo version, I didn't think it = did. All turbo 13B's require low compression rotors. -------------------------------------------------------------------------= ----- ------=_NextPart_000_0049_01CA3884.7CF46370 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Bill,
Good on Ya! I'm a bit behind my e-mails BTW.
 
I have a great solution for the PP problems of leaking coolant. I = notice=20 that PL advocates welding to the inner rotor steel liner - however not = much to=20 weld to, and then pressurizes the resin filler.
Now this is not my idea but it sis working well locally and that is = to weld=20 a Al tube to the inner Al housing - weld it rights around and then fill = the=20 remainder with resin. Seems to work much better than what was done = previously=20 and ahs held up in well in racing applications. 
George ( down under)
----- Original Message -----
From:=20 WRJJRS@aol.com
Sent: Monday, September 07, = 2009 5:06=20 AM
Subject: [FlyRotary] Re: Three = or=20 two?

Gonzalo,
Sorry to be contrary, but in my opinion the ONLY way to go for a = flying=20 rotary is P-port. All of the original Power Sport engines (the = Everette Hatch=20 P.S.) ran P-ports. The manifolding for a P-port engine is vastly = easier. In=20 fact Hatch and Steve Beckham built several engines with P-ports that = even ran=20 reverse rotation so they could get proper propeller rotation with some = gearboxes. You can even P-port an Renesis and it still works. The = reason that=20 Mazda isn't P-porting their race cars has nothing to do with if = P-porting is=20 better, it is racing organizations requirements. The reason for the = side port=20 Renesis is for emissions and low RPM fuel economy. Those are areas = that are=20 only important in a CAR. The typical aircraft runs 50% to 90% ALL THE = TIME and=20 P-ports are much better at mid to high RPMS. The Mazda Le Mans winning = engine=20 used P-ports and they were running with a fuel economy formula. (the = fuel was=20 limited) For high output P-ports just work better.
Bill Jepson

Gonzalo,

A lot of = people=20 talk about peripheral porting rotaries but nobody is doing it with a = rotary=20 that they plan to fly behind.  If it was such a good thing, = Mazda would=20 be P-Porting their cars.  Instead they are going away even from = the=20 peripheral port for the exhaust with the Renesis. =20

If 200 HP = will do=20 it for you the Renesis is the way to go.  This process of = putting an=20 alternative engine in a plane is hard enough without violating the = KISS=20 principle.

Put in a = Renesis,=20 no turbo, no P-Port.

Bill=20 B

 

From:=20 Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net] On=20 Behalf Of George Lendich
Sent: Sunday, August 23, 2009 = 5:57=20 PM
To: = Rotary motors in aircraft
Subject: [FlyRotary] Re: = Three or=20 two?

 

Gonzalo,

I don't know if the = Renesis has=20 a turbo version, I didn't think it did. All turbo 13B's require = low=20 compression = rotors.

 
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