X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from nm9.access.bullet.mail.mud.yahoo.com ([66.94.237.210] verified) by logan.com (CommuniGate Pro SMTP 5.4.6) with SMTP id 5646334 for flyrotary@lancaironline.net; Tue, 10 Jul 2012 21:27:47 -0400 Received-SPF: none receiver=logan.com; client-ip=66.94.237.210; envelope-from=ceengland@bellsouth.net Received: from [66.94.237.196] by nm9.access.bullet.mail.mud.yahoo.com with NNFMP; 11 Jul 2012 01:27:12 -0000 Received: from [98.139.244.49] by tm7.access.bullet.mail.mud.yahoo.com with NNFMP; 11 Jul 2012 01:27:12 -0000 Received: from [127.0.0.1] by smtp111.sbc.mail.bf1.yahoo.com with NNFMP; 11 Jul 2012 01:27:12 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bellsouth.net; s=s1024; t=1341970032; bh=LWQjzMk/W62uTQ9suXGDST5TFJ3c+aI2TxEnTmM1ccI=; h=X-Yahoo-Newman-Id:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:Received:Message-ID:Date:From:User-Agent:MIME-Version:To:Subject:References:In-Reply-To:Content-Type; b=grn5BkLieIYKM21lGvAzS6aackgwt03sk0Nz2t3CsM0scmDyTxmaBT1Uf/Sohp4DpMTEAp32AmTBMoChe1IfwO/+hUmYbP30qezropaRZKwDgdXWc1+CLljcp06sp2b7n7UjZumxSmV2GwFVYQnRseJedK4P6tJbu1J/XlABZXk= X-Yahoo-Newman-Id: 768480.61148.bm@smtp111.sbc.mail.bf1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: J3PoLJoVM1mKO5xtFwlteoeHEaqrq4ahkumYx7lKEWzUrDa sEMod0_12Nlo7FaWQikMO9h4h2CAI0zBD2uyM3AcxlzluSiaqy4RGAy0fNb4 Lb4G1M1TjpnpKQr0Jzd6Q90vONaAFoD_u.qeJ0H9qlPQFpkVztK2vC_Pv.Cz 0xvLqWcEmChaDuLCGulpZH7xq.Iu8G0Cr0NQ30xt.iMHh7peWr50kVDL9AfR h0YCLRtp2rIEhKKi7ZP7tMM_bK6f2J0NR7AlbdYrEcjdFpHBr.OqlcUiWP.8 xqs72ZNxgG9Pd8nh7KMO6hPhWsBVrzbzqQqTdUGAzCpYMNKJqqev.SmlO1OV SIZV.q7CbeffAVfG9odm6OkHug_uxRZdfGc8okKwePFv7nN42lank70tUsdQ HrW97hlJQFLuEo7OqYQk6EjUJMr6CPxfTkimOFd9JXq40HMEDITrL4M5AtOE - X-Yahoo-SMTP: uXJ_6LOswBCr8InijhYErvjWlJuRkoKPGNeiuu7PA.5wcGoy Received: from [192.168.10.30] (ceengland@98.95.124.87 with plain) by smtp111.sbc.mail.bf1.yahoo.com with SMTP; 10 Jul 2012 18:27:12 -0700 PDT Message-ID: <4FFCD66F.3080003@bellsouth.net> Date: Tue, 10 Jul 2012 20:27:11 -0500 From: Charlie England User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1 MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: First lift off with single rotor References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------060105010403020305000308" This is a multi-part message in MIME format. --------------060105010403020305000308 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Gravity feed or low pressure fuel pump feeding the Rotec? If gravity feed, could positive pressure in the injector throat as your speed increases be overpowering fuel pressure? FWIW, I just swapped emails with Rotec about using one on my Lyc, & they told me that the model for Lycs can easily handle 5-6 psi from a typical Lyc setup using an engine driven pump with a backup Facet electric pump both running in series. Hot, boiling fuel in the line feeding the engine is not your friend (don't ask how I know). Might be worth an email to Rotec. They responded to my info request very quickly. Charlie On 07/10/2012 07:59 PM, Richard Sohn wrote: > My radiator is not discharging into the cowling, so there is not a > connection. I did another test run with the inlet around the prop > flange taped almost shut, and the engine sputtering did not come back. > This would indicate to me there is a connection. Either with pressure > or some sort of turbulence. > Richard Sohn > N2071U > > http://www.fairpoint.net/~res12/home.html > *From:* Tracy > *Sent:* Tuesday, July 10, 2012 4:50 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: First lift off with single rotor > If its cooling well I wouldn't be so quick to call it a big mistake. > Tracy. > > Sent from my iPad > > On Jul 10, 2012, at 9:51 AM, "Richard Sohn" > wrote: > >> Analyzed the dimensions of my cowling, and fount the exit openings >> being about 70% of the inlet openings. Big mistake there. This will >> be fixed before looking at other options. >> Richard Sohn >> N2071U >> >> http://www.fairpoint.net/~res12/home.html >> --------------060105010403020305000308 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Gravity feed or low pressure fuel pump feeding the Rotec? If gravity feed, could positive pressure in the injector throat as your speed increases be overpowering fuel pressure? FWIW, I just swapped emails with Rotec about using one on my Lyc, & they told me that the model for Lycs can easily handle 5-6 psi from a typical Lyc setup using an engine driven pump with a backup Facet electric pump both running in series. Hot, boiling fuel in the line feeding the engine is not your friend (don't ask how I know).

Might be worth an email to Rotec. They responded to my info request very quickly.

Charlie

On 07/10/2012 07:59 PM, Richard Sohn wrote:
My radiator is not discharging into the cowling, so there is not a connection. I did another test run with the inlet around the prop flange taped almost shut, and the engine sputtering did not come back. This would indicate to me there is a connection. Either with pressure or some sort of turbulence.
 
 
 
 
From: Tracy
Sent: Tuesday, July 10, 2012 4:50 PM
Subject: [FlyRotary] Re: First lift off with single rotor
 
If its cooling well I wouldn't be so quick to call it a big mistake. 
 
Tracy.

Sent from my iPad

On Jul 10, 2012, at 9:51 AM, "Richard Sohn" <res12@fairpoint.net> wrote:

Analyzed the dimensions of my cowling, and fount the exit openings being about 70% of the inlet openings. Big mistake there. This will be fixed before looking at other options.
 

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