X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf24aec.mail.bellsouth.net ([205.152.59.72] verified) by logan.com (CommuniGate Pro SMTP 4.3.5) with ESMTP id 1022590 for flyrotary@lancaironline.net; Sun, 26 Jun 2005 22:13:48 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.72; envelope-from=13brv3@bellsouth.net Received: from ibm68aec.bellsouth.net ([65.6.194.9]) by imf24aec.mail.bellsouth.net with ESMTP id <20050627021303.RTOI26489.imf24aec.mail.bellsouth.net@ibm68aec.bellsouth.net> for ; Sun, 26 Jun 2005 22:13:03 -0400 Received: from rd ([65.6.194.9]) by ibm68aec.bellsouth.net with ESMTP id <20050627021302.SXLP29052.ibm68aec.bellsouth.net@rd> for ; Sun, 26 Jun 2005 22:13:02 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] 88 13b NA Date: Sun, 26 Jun 2005 21:13:03 -0500 Message-ID: <000401c57abd$bffb9230$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0005_01C57A93.D7258A30" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 This is a multi-part message in MIME format. ------=_NextPart_000_0005_01C57A93.D7258A30 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable What are the thoughts on spinning a 1988 13b NA at 7700 rpm (2700 prop) = for takeoff, and 6500 (2300 prop) for cruise. I have an electricly = adjustable prop (MT) =20 That prop and engine just won't work together. I've got a perfect wood = prop that will work much better for you, and I'll take that MT off your hands = and trade it in for one that goes the proper direction :-) =20 No problem with that plan as far as I can see. What would be a good porting candidate for this engine and what could I anticipate seeing, as foar as HP is concerned? =20 I would go as big as you can with a mild/street port, and figure on = 220-230 if you smooth the high speed port well, and make a nice intake and = exhaust. It would be a happy, civilized engine. More power is out there, but = you'll have to give up something to get it. =20 =20 How much power do you want? =20 =20 Cheers, Rusty (ROTFLAJS) ------=_NextPart_000_0005_01C57A93.D7258A30 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

What are the thoughts on spinning a 1988 13b NA  = at 7700=20 rpm (2700 prop) for takeoff, and 6500 (2300 prop) for cruise. I have an=20 electricly adjustable prop (MT)

 
That = prop and engine=20 just won't work together.  I've got a perfect wood prop that will = work much=20 better for you, and I'll take that MT off your hands and trade it in for = one=20 that goes the proper direction :-)
 
No = problem with that=20 plan as far as I can see.

What would be a good porting = candidate=20 for this engine and what could I anticipate seeing, as foar as HP is=20 concerned?
 
I would = go as big as you=20 can with a mild/street port, and figure on 220-230 if you smooth the = high speed=20 port well, and make a nice intake and exhaust.  It would be a = happy,=20 civilized engine.  More power is out there, but you'll have to give = up=20 something to get it. 
 
How much = power do you=20 want? 
 
Cheers,
Rusty=20 (ROTFLAJS)


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