X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from poplet2.per.eftel.com ([203.24.100.45] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3876765 for flyrotary@lancaironline.net; Tue, 06 Oct 2009 17:19:32 -0400 Received-SPF: none receiver=logan.com; client-ip=203.24.100.45; envelope-from=lendich@aanet.com.au Received: from sv1-1.aanet.com.au (sv1-1.per.aanet.com.au [203.24.100.68]) by poplet2.per.eftel.com (Postfix) with ESMTP id D1981173938 for ; Wed, 7 Oct 2009 05:18:56 +0800 (WST) Received: from ownerf1fc517b8 (203.171.92.134.static.rev.aanet.com.au [203.171.92.134]) by sv1-1.aanet.com.au (Postfix) with SMTP id 97800BEC00C for ; Wed, 7 Oct 2009 05:18:55 +0800 (WST) Message-ID: <50236D5C08F949C38795F9BB2134D058@ownerf1fc517b8> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Seepage, no more. Oil system Date: Wed, 7 Oct 2009 07:18:56 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0043_01CA471E.6EB0C530" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5843 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-Antivirus: avast! (VPS 091006-0, 10/06/2009), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0043_01CA471E.6EB0C530 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Jeff, Tracy Crook suggests this in his web site. In fact with a conventional reconfiguration of the crank design from 2 = rotor to one rotor there is little room to put in a rotor filling = nozzle/ hole in that exact position - I may opt for a hole through the = rotor inner housing, fed from the conventional bearing oil feeder oil = passage. Restricting the diameter of the oil passage is the secret - to = what size is yet to be determined in my application. George ( down under) Hi Lynn, with regards to your high-lighted comment about the check = balls in the crank - that is one item Bruce Turrentine suggested be = removed in an overhaul for aircraft applications, replacing the balls = with a carburetor jet to allow oil flow right away and continuously. So, = I did install carburetor jets in my e-shaft during rebuild. Any = comments? Anybody else out there do the same thing? Just curious as I'm = fighting high oil temps. Jeff =20 Plus, the rotary is cold blooded. The big bearings stress the oil film = to no great extent, and the major source of oil temperature is rotor = cooling. At low speeds and idle, the check balls in the crank don't even = open to allow cooling oil to spray into the engine. Those balls operate = as a function of RPM not temperature.=20 =20 On the other hand, you will get a water temperature increase within = one minute of startup. A water based coolant has very low viscosity and = flow to a distant heat exchanger will be immediate. Like the rear heater = in my school bus. =20 Lynn E. Hanover =20 ------=_NextPart_000_0043_01CA471E.6EB0C530 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Jeff,

Tracy Crook suggests this in his web = site.

In fact with a conventional = reconfiguration of=20 the crank design from 2 rotor to one rotor there is little room to put = in=20 a rotor filling nozzle/ hole in that exact = position - I=20 may opt for a hole through the rotor inner housing, fed from the = conventional=20 bearing oil feeder oil passage. Restricting the diameter of the oil = passage is=20 the secret - to what size is yet to be determined in my = application.

George ( down under)

Hi=20 Lynn, with regards to your high-lighted comment about the check balls = in the=20 crank =96 that is one item Bruce Turrentine suggested be removed in an = overhaul=20 for aircraft applications, replacing the balls with a carburetor jet = to allow=20 oil flow right away and continuously. So, I did install carburetor = jets in my=20 e-shaft during rebuild. Any comments? Anybody else out there do the = same=20 thing? Just curious as I=92m fighting high oil=20 temps.

Jeff

Plus,=20 the rotary is cold blooded. The big bearings stress the oil film to no = great=20 extent, and the major source of oil temperature is rotor cooling. At = low=20 speeds and idle, the check balls in the crank don't even open to allow = cooling=20 oil to spray into the engine. Those balls operate as a function of RPM = not=20 temperature.

On = the other=20 hand, you will get a water temperature increase within one minute of=20 startup. A water based coolant has very low viscosity and flow to = a=20 distant heat exchanger will be immediate. Like the rear heater in my = school=20 bus.

Lynn = E.=20 Hanover

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