X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from pacmmta52.windstream.net ([162.39.147.111] verified) by logan.com (CommuniGate Pro SMTP 6.0c2) with ESMTP id 5906079 for flyrotary@lancaironline.net; Tue, 27 Nov 2012 07:35:57 -0500 Received-SPF: pass receiver=logan.com; client-ip=162.39.147.111; envelope-from=jskmberki@windstream.net Return-Path: X-WS-COS: WSOB804 X-Cloudmark-Category: Undefined:Undefined X-Cloudmark-Analysis: v=1.1 cv=qLnK0TQP0Sjj11iwkjRg0C1b6gmN2kBD+4eP4Y8vpSE= c=1 sm=0 a=UT_QgiwtmQIA:10 a=83NjKsLDAAAA:8 a=o2QoyYduAAAA:8 a=VtFitmpIJ7Zks3i5as8A:9 a=CjuIK1q_8ugA:10 a=TlnOPt13aEMA:10 a=QEXdDO2ut3YA:10 a=UiCQ7L4-1S4A:10 a=hTZeC7Yk6K0A:10 a=_W_S_7VecoQA:10 a=frz4AuCg-hUA:10 a=MjHg5ImKO2cbqQUv:21 a=qxCODFsjIOlU1vbSsglozw==:117 X-Cloudmark-Score: 0 Authentication-Results: pacmmta52 smtp.user=jskmberki@windstream.net; auth=pass (PLAIN) Received: from [174.231.2.172] ([174.231.2.172:24144] helo=[10.248.171.209]) by pacmmta52 (envelope-from ) (ecelerity 2.2.3.47 r(39824M)) with ESMTPA id FC/39-18014-A83B4B05; Tue, 27 Nov 2012 07:35:23 -0500 Subject: Fwd: P Port 101 References: <20286AA6B4ABF9468E7ACE54FD7B3416011548@NHC0EX56.goodrich.root.local> From: My Email Content-Type: multipart/alternative; boundary=Apple-Mail-E006434A-D680-4423-8890-308F33BC0042 X-Mailer: iPhone Mail (9A405) Message-Id: Date: Tue, 27 Nov 2012 07:35:18 -0500 To: Rotary motors in aircraft Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) --Apple-Mail-E006434A-D680-4423-8890-308F33BC0042 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Sent from my iPhone Begin forwarded message: > From: "Berki, Joseph UTAS" > Date: November 27, 2012 7:30:28 AM EST > To: "jskmberki@windstream.net" > Subject: P Port 101 >=20 > Mark, > =20 > I am trying to evaluate what to do with the fuel system including the slid= e throttle. Based on your experience in the real world, why does it bind dur= ing operation? Is it the vacuum created by the rotors? Is the coefficient o= f expansion using aluminum and Teflon causing binding? I would think vacuum= would be greatest at idle then drop off as the hole gets bigger. The holes= are teardrop shape on my slide. > =20 > I believe I will have some puddling but my plenum is not over the exhaust b= ut some distance away and lower than the ports. If the injectors are closer= to the slide I see the potential for a leaking slide to ruin your day. If t= he injectors were placed next to the port and downstream from the slide wou= ld there still be a potential for puddling? > =20 > Where should the air bleed be located? Downstream from the slide? Does i= t provide air at idle to balance the mixture? > =20 > Do gaskets between the spacer and the side plates of the slide seal adequa= tely? > =20 > I have a heat shield that surrounds the headers and plan to duct air acros= s the headers to keep temps down under the cowl. > =20 > If puddling is not an issue if a metal plenum is used that may be a soluti= on. I originally had this but the metal portion of the plenum got too big. > =20 > I am also looking at moving the injectors between the ports and the slide.= Appreciate any input. > =20 > Joe Berki > Limo EZ > 13b P port --Apple-Mail-E006434A-D680-4423-8890-308F33BC0042 Content-Transfer-Encoding: 7bit Content-Type: text/html; charset=utf-8

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Begin forwarded message:

From: "Berki, Joseph UTAS" <Joseph.Berki@utas.utc.com>
Date: November 27, 2012 7:30:28 AM EST
To: "jskmberki@windstream.net" <jskmberki@windstream.net>
Subject: P Port 101

Mark,

I am trying to evaluate what to do with the fuel system including the slide throttle. Based on your experience in the real world, why does it bind during operation? Is it the vacuum created by the rotors? Is the coefficient of expansion using aluminum and Teflon causing binding? I would think vacuum would be greatest at idle then drop off as the hole gets bigger. The holes are teardrop shape on my slide.

I believe I will have some puddling but my plenum is not over the exhaust but some distance away and lower than the ports. If the injectors are closer to the slide I see the potential for a leaking slide to ruin your day. If the injectors were placed next to the port and downstream from the slide would there still be a potential for puddling?

Where should the air bleed be located? Downstream from the slide? Does it provide air at idle to balance the mixture?

Do gaskets between the spacer and the side plates of the slide seal adequately?

I have a heat shield that surrounds the headers and plan to duct air across the headers to keep temps down under the cowl.

If puddling is not an issue if a metal plenum is used that may be a solution. I originally had this but the metal portion of the plenum got too big.

I am also looking at moving the injectors between the ports and the slide. Appreciate any input.

Joe Berki

Limo EZ

13b P port

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