X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.121] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3876845 for flyrotary@lancaironline.net; Tue, 06 Oct 2009 18:44:56 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.121; envelope-from=eanderson@carolina.rr.com Received: from computername ([75.191.186.236]) by cdptpa-omta04.mail.rr.com with ESMTP id <20091006224419753.VZOA12917@cdptpa-omta04.mail.rr.com> for ; Tue, 6 Oct 2009 22:44:19 +0000 From: "Ed Anderson" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Seepage, no more. Oil system Date: Tue, 6 Oct 2009 18:53:54 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0048_01CA46B6.5A38E230" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Thread-Index: AcpGvXbW0nDiQhpzQt22Kr4163aXrQAGiT2A In-Reply-To: Message-Id: <20091006224419753.VZOA12917@cdptpa-omta04.mail.rr.com> This is a multi-part message in MIME format. ------=_NextPart_000_0048_01CA46B6.5A38E230 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit I've been flying 10 + years with the eccentric shaft balls and springs removed and Webber jets installed. At our normal rpm the balls would always be open in any case, so the Jets just eliminated one more failure point (in my opinion) Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm _____ 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 __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ------=_NextPart_000_0048_01CA46B6.5A38E230 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

I’ve been flying 10 + years = with the eccentric shaft balls and springs  removed and Webber jets installed.  At our normal rpm the balls would always be open in any = case, so the Jets just eliminated one more failure point (in my = opinion)

 

Ed

 

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

 



__________ Information from ESET NOD32 Antivirus, version of virus = signature database 3267 (20080714) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com

------=_NextPart_000_0048_01CA46B6.5A38E230--