X-Virus-Scanned: clean according to Sophos on Logan.com From: "Steven W. Boese" Received: from [207.46.100.145] (HELO na01-by2-obe.outbound.protection.outlook.com) by logan.com (CommuniGate Pro SMTP 6.1.2) with ESMTPS id 7702670 for flyrotary@lancaironline.net; Wed, 20 May 2015 12:43:15 -0400 Received-SPF: none receiver=logan.com; client-ip=207.46.100.145; envelope-from=SBoese@uwyo.edu Received: from BN3PR0501MB1138.namprd05.prod.outlook.com (25.160.113.148) by BN3PR0501MB1139.namprd05.prod.outlook.com (25.160.113.149) with Microsoft SMTP Server (TLS) id 15.1.166.22; Wed, 20 May 2015 16:42:38 +0000 Received: from BN3PR0501MB1138.namprd05.prod.outlook.com ([25.160.113.148]) by BN3PR0501MB1138.namprd05.prod.outlook.com ([25.160.113.148]) with mapi id 15.01.0166.017; Wed, 20 May 2015 16:42:37 +0000 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Return to Flight - 2 Thread-Topic: [FlyRotary] Re: Return to Flight - 2 Thread-Index: AQHQkwbwRg103L3JDEOS+oRj8LvOuJ2FD/mJ Date: Wed, 20 May 2015 16:42:37 +0000 Message-ID: <1432140157732.5443@uwyo.edu> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=SBoese@uwyo.edu; x-originating-ip: [69.146.103.188] x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:BN3PR0501MB1139; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(601004)(5005006)(3002001);SRVR:BN3PR0501MB1139;BCL:0;PCL:0;RULEID:;SRVR:BN3PR0501MB1139; x-forefront-prvs: 0582641F53 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(6009001)(199003)(377454003)(189002)(99286002)(68736005)(102836002)(450100001)(19580405001)(19580395003)(2950100001)(90282001)(117636001)(77156002)(62966003)(106116001)(89122001)(105586002)(106356001)(16236675004)(40100003)(19627405001)(2900100001)(92566002)(75432002)(122556002)(86362001)(81156007)(19625215002)(87936001)(2656002)(88552001)(50986999)(76176999)(54356999)(110136002)(64706001)(80792005)(189998001)(5001830100001)(4001540100001)(101416001)(107886002)(66066001)(46102003)(36756003)(5001860100001)(97736004)(5001960100002);DIR:OUT;SFP:1102;SCL:1;SRVR:BN3PR0501MB1139;H:BN3PR0501MB1138.namprd05.prod.outlook.com;FPR:;SPF:None;PTR:InfoNoRecords;A:1;MX:1;LANG:en; received-spf: None (protection.outlook.com: uwyo.edu does not designate permitted sender hosts) Content-Type: multipart/alternative; boundary="_000_14321401577325443uwyoedu_" MIME-Version: 1.0 X-OriginatorOrg: uwyo.edu X-MS-Exchange-CrossTenant-originalarrivaltime: 20 May 2015 16:42:37.1502 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f9cdd7ad-825d-4601-8e9c-a325e02d52da X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN3PR0501MB1139 --_000_14321401577325443uwyoedu_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Jeff, Please don't take my comments as criticism. I would recommend measuring th= e oil pressures and temperatures into and out of the Mazda oil cooler and m= ake your own decision. This would be particularly useful to me as an indep= endent verification (or not) of the characteristics I observed. The import= ant thing is that your system is doing what you want and need. It certainl= y isn't necessary for me to understand how it does that. Steve ________________________________ From: Rotary motors in aircraft on behalf of = Jeff Whaley Sent: Wednesday, May 20, 2015 8:10 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Return to Flight - 2 Hi Steve, thank you for another detailed explanation; I know you have done = a great deal of instrumentation on these engines and I appreciate your feed= back - those plots are priceless. My oil temperature probe is mounted at the return port after the second oil= cooler; my coolant temperature probe is mounted near the water pump outlet= . The Mazda oil cooler was NOT installed when the hose failed. So from your explanation, the Mazda oil cooler is not the best choice for a= viation use whether it's a single cooler or linked in series? It would not take too much effort (2-3 hours) for me to remove the Mazda co= oler and reinstall my second Fluidyne where it was previously mounted; I ke= pt the cowl openings the same and adapted the Mazda oil cooler install to f= it. I would have to go back to installing cover plates for winter operatio= ns to control oil temperature - I can live with that and with synthetic oil= , cool oil is not a huge issue. When I get the coolant temperature under control, time to re-experiment wit= h only one oil cooler - two is definitely overkill for winter operations. Jeff --_000_14321401577325443uwyoedu_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Jeff,


Please don't take my comments as criticism.  I would recommend meas= uring the oil pressures and temperatures into and out of the Mazda oil cool= er and make your own decision.  This would be particularly useful to m= e as an independent verification (or not) of the characteristics I observed.  The important thing is that your = system is doing what you want and need.  It certainly isn't necessary = for me to understand how it does that.


Steve

From: Rotary motors in ai= rcraft <flyrotary@lancaironline.net> on behalf of Jeff Whaley <fly= rotary@lancaironline.net>
Sent: Wednesday, May 20, 2015 8:10 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Return to Flight - 2
 

Hi Steve, thank you for another det= ailed explanation; I know you have done a great deal of instrumentation on = these engines and I appreciate your feedback – those plots are priceless.

My oil temperature probe is mounted= at the return port after the second oil cooler; my coolant temperature pro= be is mounted near the water pump outlet.  The Mazda oil cooler was NOT installed when the hose failed.

So from your explanation, the Mazda= oil cooler is not the best choice for aviation use whether it’s a si= ngle cooler or linked in series?

It would not take too much effort (= 2-3 hours) for me to remove the Mazda cooler and reinstall my second Fluidy= ne where it was previously mounted; I kept the cowl openings the same and adapted the Mazda oil cooler install to fit.  I would ha= ve to go back to installing cover plates for winter operations to control o= il temperature – I can live with that and with synthetic oil, cool oi= l is not a huge issue.

When I get the coolant temperature = under control, time to re-experiment with only one oil cooler – two i= s definitely overkill for winter operations.

Jeff

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