Return-Path: Received: from fed1rmmtao02.cox.net ([68.230.241.37] verified) by logan.com (CommuniGate Pro SMTP 4.2b4) with ESMTP id 121464 for flyrotary@lancaironline.net; Wed, 02 Jun 2004 20:29:22 -0400 Received: from smtp.west.cox.net ([172.18.180.57]) by fed1rmmtao02.cox.net (InterMail vM.6.01.03.02 201-2131-111-104-20040324) with SMTP id <20040603002852.LCKI4323.fed1rmmtao02.cox.net@smtp.west.cox.net> for ; Wed, 2 Jun 2004 20:28:52 -0400 From: Dale Rogers To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] intake dia. Date: Wed, 2 Jun 2004 20:28:51 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Message-Id: <20040603002852.LCKI4323.fed1rmmtao02.cox.net@smtp.west.cox.net> ------------ original message: > From: kenpowell@comcast.net > Date: 2004/06/02 Wed PM 06:09:49 EDT > To: "Rotary motors in aircraft <"flyrotary@lancaironline.net> > Subject: [FlyRotary] intake dia. > > When Paul Yaw was on Paul L's list we had this same discussion but for a PP engine. He recommended starting with a 1.5" dia throttle body for each PP and stated that it should produce between 200 and 215 HP. He is obviously a proponent of high velocity in the intake tract. > Interestingly enough, I had an occasion to stop by Paul's new shop in North Phoenix (just across the street from Deer Valley Airport), and his current project involved turning a six port into a four port, via removing the the web between the upper and lower secondaries. He said it worked best above 7000 RPM. Dale R. COZY MkIV-R #1254