X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail01.syd.optusnet.com.au ([211.29.132.182] verified) by logan.com (CommuniGate Pro SMTP 5.1.9) with ESMTPS id 2079547 for flyrotary@lancaironline.net; Fri, 01 Jun 2007 21:02:06 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.182; envelope-from=lendich@optusnet.com.au Received: from george (d211-31-100-51.dsl.nsw.optusnet.com.au [211.31.100.51]) by mail01.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id l5211Mvq026652 for ; Sat, 2 Jun 2007 11:01:23 +1000 Message-ID: <00cd01c7a4b1$89ebff20$33641fd3@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: PP Ve??? was Re: Intake CFM air flow Date: Sat, 2 Jun 2007 11:01:21 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00CA_01C7A505.5ABF1440" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_00CA_01C7A505.5ABF1440 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable OK Lynn, what's the guesstimate for a 44.. P-port intake ( single rotor) = at 7,500 using the RX8 high compression rotor with 3mm seals. And would = I get more with a bigger port? George (down under) Extra data in the game. 13B size, Higher compression, always good = news. I deal runner and header length and diameter for 7,500, 130 HP. = Just a guess. Put it in a car and get it on a chassis dyno. Pports can = be very unhappy with poor muffling systems. Or build one if you have a reduction system and a prop big enough to = absorb the power. Here is a display dyno that could include HP and thrust if some play = is left in the pillow block bearings.=20 Lynn E. Hanover=20 Thanks Lynn, Yep! I'm working on the runner length, but I don't want to make them = too big and lower velocity, 44.. or about 1.73" is bigger than I = originally envisaged, I was originally looking at 1.5", then 1.6 to = overcome butterfly disturbance/restriction, but I didn't want to go to = 2", as I thought this unnecessary for the RPM. I though the higher compression would be best for the single - thanks = for confirming that. Will definitely have it run on a Dyno when completed. Have been working with Bill Jepson on the Magic Muffler!! I am seeing a chap Monday on the crank shaft, he seems to be the = person I'm looking for - will see. BTW cut down a double crank to compare weights and found the 2 rotor = weight is 13 lbs and the single 5.5 lbs ( approx) - if anyone was = interested. I initially cut one down and joined the two pieces to give = the machinist an understanding (visually) of what I'm wanting - it all = helps. 125HP would be great and 130HP would be wonderful - am working on it. George ( down under) =20 -------------------------------------------------------------------------= ----- See what's free at AOL.com.=20 -------------------------------------------------------------------------= ----- -------------------------------------------------------------------------= ----- -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_00CA_01C7A505.5ABF1440 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

OK Lynn, what's the guesstimate for a 44.. = P-port intake (=20 single rotor) at 7,500 using the RX8 high compression rotor with 3mm = seals. And=20 would I get more with a bigger port?

George (down = under)

Extra data in the game. 13B size, Higher compression, always good = news. I=20 deal runner and header length and diameter for 7,500, 130 HP. Just a = guess.=20 Put it in a car and get it on a chassis dyno. Pports can be very = unhappy with=20 poor muffling systems.

Or build one if you have a reduction system and a prop big enough = to=20 absorb the power.

Here is a display dyno that could include HP and thrust if some = play is=20 left in the pillow block bearings.

Lynn E. Hanover

Thanks Lynn,

Yep! I'm working on the runner length, but I don't = want to=20 make them too big and lower velocity, 44.. or about 1.73" is = bigger than=20 I originally envisaged, I was originally looking at 1.5", then 1.6 to = overcome=20 butterfly disturbance/restriction, but I didn't want to go to 2", as I = thought=20 this unnecessary for the RPM.

I though the higher compression would be best for = the single=20 - thanks for confirming that.

Will definitely have it run on a Dyno when=20 completed.

Have been working with Bill Jepson on the Magic=20 Muffler!!

I am seeing a chap Monday on the crank shaft, he = seems to be=20 the person I'm looking for - will see.

BTW cut down a double crank to compare weights and = found the=20 2 rotor weight is 13 lbs and the single 5.5 lbs ( approx) - if anyone = was=20 interested. I initially cut one down and joined the two pieces to give = the=20 machinist an understanding (visually) of what I'm wanting - it all=20 helps.

125HP would be great and 130HP would be wonderful = - am=20 working on it.

George ( down = under)

See what's free at AOL.com.=20

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