X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp107.sbc.mail.re2.yahoo.com ([68.142.229.98] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with SMTP id 3876706 for flyrotary@lancaironline.net; Tue, 06 Oct 2009 15:52:14 -0400 Received-SPF: none receiver=logan.com; client-ip=68.142.229.98; envelope-from=bryanwinberry@bellsouth.net Received: (qmail 94245 invoked from network); 6 Oct 2009 19:51:39 -0000 Received: from unknown (HELO acer7fbfa7e2f7) (bryanwinberry@74.176.194.79 with login) by smtp107.sbc.mail.re2.yahoo.com with SMTP; 6 Oct 2009 19:51:38 -0000 X-YMail-OSG: tMEmoUoVM1kCtFVv.NbLqd3eQCCT2zlDepozl1Qv3IHDlRJb9Rrrk6L4c8b.pJ0DeTxOd78CtzVvXFDowmgaWxcw6B2hpLHyPWL187Qc7CUlmwrtbIsjT8iM.J_LgvrGLEAYMgIQsyaR4N9n9Tw5rTMR.iK91MrRJk_6ff5glJN5hyX2D7sVHpznubarck97w1vT4UC_LlchzoXoitBuUKwCZkcMkoaealCoHXVw6aeFqivp_4zQAu_qsHIY2E7lmR7SNRKSvPy7Z70s55j4MpzWj.dEsdY0Nh2QTfexCi.IVVNZjalS0pTx8E8V3xIrY8hFBO63xee8EWK5ARpWDL_kZLzdGiYCGr9dRjQZ_vbc X-Yahoo-Newman-Property: ymail-3 From: "Bryan Winberry" To: "'Rotary motors in aircraft'" References: Subject: RE: [FlyRotary] Re: Seepage, no more. Oil system Date: Tue, 6 Oct 2009 15:51:37 -0400 Message-ID: <3066171DC6394E5E9A76DDFF5B01D404@acer7fbfa7e2f7> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_003C_01CA469C.E3FD20E0" X-Mailer: Microsoft Office Outlook 11 In-reply-to: Thread-Index: AcpGvXY9w2z1+P/2Tp2s2mySoaDLXgAAIvQg X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_003C_01CA469C.E3FD20E0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit FWIW, When I was rebuilding my Renesis, I had planned to install the jets. I purchased them from Atkins against their recommendation. I bounced it off Tracy, and he concurred with Atkins. Their contention was that the jets were more for auto racing applications (very high rpm's). Bryan _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Jeff Whaley Sent: Tuesday, October 06, 2009 3:45 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Seepage, no more. Oil system 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 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. 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. Lynn E. Hanover ------=_NextPart_000_003C_01CA469C.E3FD20E0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

FWIW,

When I was rebuilding my Renesis, I = had planned to install the jets.  I purchased them from Atkins against = their recommendation.  I bounced it off Tracy, and he concurred with Atkins.  Their contention was that the jets = were more for auto racing applications (very high = rpm’s).

Bryan

 


From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Jeff Whaley
Sent: Tuesday, October = 06, 2009 3:45 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Seepage, no more. Oil system

 

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

 

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. 

 

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.

 

Lynn E. = Hanover

 

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