X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=JejCUnCV c=1 sm=1 tr=0 a=6HjVqUvGVIaMrJ2fr88T4A==:117 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=57VMzShAFnAA:10 a=e1oJybkonRYA:10 a=sVkp7bGJicEA:10 a=x7bEGLp0ZPQA:10 a=xqWC_Br6kY4A:10 a=E5NmQfObTbMA:10 a=PmhH1KkZReAA:10 a=Ia-xEzejAAAA:8 a=on22okXAAAAA:8 a=7g1VtSJxAAAA:8 a=0R63bvd53B7wFKSi0McA:9 a=cASYD8Ob5vAXmVEn:21 a=eLB3fVB_zzbjkYij:21 a=UAVRJdkkkM0A:10 a=Qa1je4BO31QA:10 a=gvSQh4r-fQ0A:10 a=AmgBeFVyOldLJuws:21 a=5znBFrihv2bKGn6m:21 a=cVjuj6ZRyT7goQ6s:21 a=_W_S_7VecoQA:10 a=frz4AuCg-hUA:10 a=Urk15JJjZg1Xo0ryW_k8:22 a=NPqpj5bUEVj9vR1HIonK:22 a=grOzbf7U_OpcSX4AJOnl:22 From: "Steven W. Boese SBoese@uwyo.edu" Received: from [40.107.78.133] (HELO NAM03-BY2-obe.outbound.protection.outlook.com) by logan.com (CommuniGate Pro SMTP 6.2.12) with ESMTPS id 12536282 for flyrotary@lancaironline.net; Mon, 06 May 2019 22:52:16 -0400 Received-SPF: pass receiver=logan.com; client-ip=40.107.78.133; envelope-from=SBoese@uwyo.edu DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=uwy.onmicrosoft.com; s=selector1-uwyo-edu; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=+WTvQTbeFzKvsOyQvPsQn8mznbYxjkFIIVadfevup18=; b=aQru6OkEDFLgbCrStufzb/FRNCaND44CLW1uQbzQHhDWT9sXjOKu2m45v/B9u2LaXELQjq0Ktq8YhL7V0FIw4ccOn0r4IEKqURC6W4GuwVw7bdEK8v928RMRD4YOSLF/Ebk++w+brLT6I36d/eUpnTwp1isSw6SF1LmrGOlkW8M= Received: from MWHPR0501MB3804.namprd05.prod.outlook.com (10.167.163.164) by MWHPR0501MB3916.namprd05.prod.outlook.com (10.167.173.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1878.13; Tue, 7 May 2019 02:51:59 +0000 Received: from MWHPR0501MB3804.namprd05.prod.outlook.com ([fe80::d0e9:71f:c09d:b94b]) by MWHPR0501MB3804.namprd05.prod.outlook.com ([fe80::d0e9:71f:c09d:b94b%5]) with mapi id 15.20.1878.019; Tue, 7 May 2019 02:51:59 +0000 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Venting the Reduction Drive Thread-Topic: [FlyRotary] Venting the Reduction Drive Thread-Index: AQHVBDEm2N0qxt0J40+eJPlTnUTKFKZe8hmZ Date: Tue, 7 May 2019 02:51:59 +0000 Message-ID: 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: [69.144.172.98] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: bfea1d70-ed46-40ed-bee0-08d6d296f9a3 x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600141)(711020)(4605104)(2017052603328)(7193020);SRVR:MWHPR0501MB3916; x-ms-traffictypediagnostic: MWHPR0501MB3916: x-ms-exchange-purlcount: 2 x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:9508; x-forefront-prvs: 0030839EEE x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(136003)(39860400002)(396003)(376002)(366004)(346002)(279900001)(189003)(199004)(14454004)(25786009)(7736002)(99286004)(53936002)(72206003)(76176011)(229853002)(6436002)(9686003)(236005)(6306002)(6506007)(102836004)(76116006)(52536014)(6606003)(53546011)(8676002)(54896002)(6246003)(316002)(81166006)(8936002)(86362001)(73956011)(75432002)(786003)(91956017)(81156014)(66476007)(66556008)(64756008)(66446008)(66946007)(74316002)(80792005)(66066001)(256004)(5024004)(476003)(68736007)(19627405001)(88552002)(7696005)(6116002)(3846002)(33656002)(2906002)(5660300002)(55016002)(966005)(71190400001)(71200400001)(6916009)(26005)(606006)(186003)(478600001)(446003)(486006)(11346002);DIR:OUT;SFP:1102;SCL:1;SRVR:MWHPR0501MB3916;H:MWHPR0501MB3804.namprd05.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: uwyo.edu does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: g2xRAuqWxXIeCphMowEbHOMcViK4iw9Y651ASNKEIcdhbFod0iZOrgvBzIHGpJqt0tjBwjppEqOAEt9l/6Sb3v/OIeJ9NOcH9sARTWoyHFNYEnofwbyRQCumhc/XdUx4OwdPrs/SEI3ei5RF6jSojMhJbSeA+Ed9OsRg7SgK5jPfQcmKvrvvxDVGq9nG25g8JHqqG1nU9gqdLZunCA566lBitN24NpXOgLxfoljOwUB/d9CYnaA1GrC0yVXitxvf4IiMDODMFidiYCamgkItMhSVVeVgTE43nzutZHAX7GfbaVFnWhSKjuxV39AgFv7YL9h0VdZt+621/kzTwmrtjCbb81AEs7u+1ReuScf8UZRUFfZt1Cg/CBuXjsMO0Qtjo/2T/v8X1q8zfwD0DuDD7tJylmZ8kOiPcqRxrrRF3hk= Content-Type: multipart/alternative; boundary="_000_MWHPR0501MB3804DBA4143FFBFD69F74515B9310MWHPR0501MB3804_" MIME-Version: 1.0 X-OriginatorOrg: uwyo.edu X-MS-Exchange-CrossTenant-Network-Message-Id: bfea1d70-ed46-40ed-bee0-08d6d296f9a3 X-MS-Exchange-CrossTenant-originalarrivaltime: 07 May 2019 02:51:59.3399 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f9cdd7ad-825d-4601-8e9c-a325e02d52da X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR0501MB3916 --_000_MWHPR0501MB3804DBA4143FFBFD69F74515B9310MWHPR0501MB3804_ Content-Type: text/plain; charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable Jeff, At this point I have only 3 hr of flight time on the gearbox with the modif= ied drain and vent. I have not observed a significant effect with respect = to power absorption or heat generation. Connecting the vent line to the foot of the rotor housing was ineffective e= ven though this location was above the oil level. Connecting the vent line= to the area of the oil filler opening at the top of the center iron allowe= d the gearbox to drain as intended. The most troublesome part of the modification was enlarging the oil return= to 1/2" NPT in the rotor housing foot. Steve Boese ________________________________ From: Rotary motors in aircraft on behalf of = Jeff Whaley jwhaley@datacast.com Sent: Monday, May 6, 2019 11:27:44 AM To: Rotary motors in aircraft Subject: [FlyRotary] Venting the Reduction Drive =1B$B"!=1B(B This message was sent from a non-UWYO address. Please exercise= caution when clicking links or opening attachments from external sources. A couple months back, Steve Boese posted about oil volume in the reduction = drive unvented Vs vented but also stated that he had not flown with the mod= ification. So Steve have you or anyone else accumulated any flight-hours with a "vente= d" reduction drive? I was planning to do that with this return of warm weather but would apprec= iate a voice of experience prior to making the modification. Thanks ... Jeff -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.= html --_000_MWHPR0501MB3804DBA4143FFBFD69F74515B9310MWHPR0501MB3804_ Content-Type: text/html; charset="iso-2022-jp" Content-Transfer-Encoding: quoted-printable

Jeff,


At this point I have only 3 hr of= flight time on the gearbox with the modified drain and vent.  I have = not observed a significant effect with respect to power absorption or heat = generation.


Connecting the vent line to the f= oot of the rotor housing was ineffective even though this location was abov= e the oil level.  Connecting the vent line to the area of the oil fill= er opening at the top of the center iron allowed the gearbox to drain as intended.


 The most troublesome part o= f the modification was enlarging the oil return to 1/2" NPT in the rot= or housing foot.


Steve Boese 

From: Rotary motors in airc= raft <flyrotary@lancaironline.net> on behalf of Jeff Whaley jwhaley@d= atacast.com <flyrotary@lancaironline.net>
Sent: Monday, May 6, 2019 11:27:44 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Venting the Reduction Drive
 
=1B$B"!=1B(B This message was sent from a non-UWYO= address. Please exercise caution when clicking links or opening attachment= s from external sources.


A couple months back, Steve Boese posted about oil volume in the reduction = drive unvented Vs vented but also stated that he had not flown with the mod= ification.
So Steve have you or anyone else accumulated any flight-hours with a "= vented" reduction drive?
I was planning to do that with this return of warm weather but would apprec= iate a voice of experience prior to making the modification.
Thanks ...  Jeff

--
Homepage:  http://www.flyrotary.= com/
Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html
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