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 3859775 for flyrotary@lancaironline.net; Sat, 19 Sep 2009 18:02:38 -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 398BE173735 for ; Sun, 20 Sep 2009 06:02:02 +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 E8D23BEC01E for ; Sun, 20 Sep 2009 06:02:00 +0800 (WST) Message-ID: <9A2E10DA73164F8AB64998843646BC8B@ownerf1fc517b8> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Private P-Port Renesis Date: Sun, 20 Sep 2009 08:02:07 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0013_01CA39C8.A5F0E1F0" 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 090919-0, 09/19/2009), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0013_01CA39C8.A5F0E1F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bobby, I did some maths on my single configuration and that compares well to = Powersports figures and we both agree that 44mm is the optimum PP = diameter. My figures are 240hp (approx) at 7500 rpm - a bit higher with the = renesis 10:1 rotors. So I'm looking for between 115hp and 125 hp with a = take-off rpm of 7200 rpm. IMHO the PP is well worth consideration if = power levels are borderline, as in my case with the single with weight = considerations. One of the chaps who was involved in Powerspart was on the other list = and gave some great insight into their development work and their very = small and light development of a 2 rotor which came out to a similar = weight to an Al housing development - beautiful little engine. They used = chrome molly (oven brazed) centre and end housings with a 12A crank - = lovely work. I have a photo if anyone is interested. One thing about = PL's site, the people drawn to it and a wealth of input, but not = necessarily PL's. Like Ed, I look forward to the 16X - perhaps a 16X single, if the power = is right. George ( down under) The chart is based on an engine rpm of 6800.=20 Bobby -------------------------------------------------------------------------= ----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of George Lendich Sent: Saturday, September 19, 2009 12:22 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Private P-Port Renesis Bobby, That's realistic and perhaps conservative, what RPM was that? George (down under) Not sure the first email made it through. I would like to compare = the P-Port dyno with supercharger performance at the same rpm between = 5200 and 7500. Attached are my HP estimates and they seem to be close to = Vans actual performance expectations for a 235hp engine. But I am a = little concerned about running the Eaton M62 4th gen this hard. I have = not been able to find any data concerning sustained high rpm operations. = If the dyno numbers look good I may build a P-Port since it would not = require any other changes other than intake. I do plan to eventually put = a 3 rotor or 16B p -port in the plane but I'm not ready for another year = of building. Time to do some flying and spend time with the family.=20 Thanks Bobby -------------------------------------------------------------------------= --- From: Bobby J. Hughes=20 Sent: Friday, September 18, 2009 9:39 AM To: 'rotaryeng@earthlink.net' Subject: P-Port Renesis Paul, Do you have a dyno chart from your P-Port Renesis test? If so I = would like to get a copy. Just about got the RV10 back together after = several major changes. Moving the aluminum Berry Mount spacers to the = top of the S-Beam almost corrected my thrust line problem. I was also = able to remove most of the spacers from the rear beam. Still a little = angle on the right side that may require some machine work. It will be = interesting to see if it fly's differently.=20 Thanks, Bobby J Hughes -------------------------------------------------------------------------= --- -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_0013_01CA39C8.A5F0E1F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Bobby,
I did some maths on my single = configuration and=20 that compares well to Powersports figures and we both agree that 44mm is = the=20 optimum PP diameter.
 
My figures are 240hp (approx) at 7500 = rpm - a bit=20 higher with the renesis 10:1 rotors. So I'm=20 looking for between 115hp and 125 hp with a take-off rpm of 7200=20 rpm. IMHO the PP is well worth = consideration=20 if power levels are borderline, as in my case with the single with = weight=20 considerations.
 
One of the chaps who was involved in = Powerspart was=20 on the other list and gave some great insight into their development = work and=20 their very small and light development of a 2 rotor which came out to a = similar=20 weight to an Al housing development - beautiful little engine. They used = chrome=20 molly (oven brazed) centre and end housings with a 12A crank - lovely = work. I=20 have a photo if anyone is interested. One thing about PL's site, the = people=20 drawn to it and a wealth of input, but not necessarily = PL's.
 
Like Ed, I look forward to the 16X - = perhaps a 16X=20 single, if the power is right.
George ( down under)
 
The=20 chart is based on an engine rpm of 6800. 
 
Bobby

From: Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On Behalf Of George=20 Lendich
Sent: Saturday, September 19, 2009 12:22 = AM
To:=20 Rotary motors in aircraft
Subject: [FlyRotary] Re: Private = P-Port=20 Renesis

Bobby,
That's realistic and perhaps = conservative, what=20 RPM was that?
George (down under)
Not sure the first email made it through. = I would=20 like to compare the P-Port dyno with supercharger performance at the = same=20 rpm between 5200 and 7500. Attached are my HP estimates and they = seem to be=20 close to Vans actual performance expectations for a 235hp engine. = But I am a=20 little concerned about running the Eaton M62 4th gen this hard. I = have not=20 been able to find any data concerning sustained high rpm operations. = If the=20 dyno numbers look good I may build a P-Port since it would not = require any=20 other changes other than intake. I do plan to eventually put a 3 = rotor or=20 16B p -port in the plane but I'm not ready for another year of=20 building. Time to do some flying and spend time with the family.=20
 
Thanks  = Bobby

From: Bobby J. Hughes =
Sent:=20 Friday, September 18, 2009 9:39 AM
To:=20 'rotaryeng@earthlink.net'
Subject: P-Port=20 Renesis

Paul,
 
Do = you=20 have a dyno chart from your P-Port Renesis test? If so I = would=20 like to get a copy. Just about got the RV10 back together after = several=20 major changes. Moving the aluminum Berry Mount spacers to the top of = the=20 S-Beam almost corrected my thrust line problem. I was also able to = remove=20 most of the spacers from the rear beam. Still a little angle on = the=20 right side that may require some machine work. It will=20 be interesting to see if it fly's differently. =
 
Thanks,
 
Bobby J=20 Hughes
 

--
Homepage:  http://www.flyrotary.com/
Archive = and=20 UnSub:  =20 = http://mail.lancaironline.net:81/lists/flyrotary/List.html
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