X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [207.46.163.187] (HELO na01-bn1-obe.outbound.protection.outlook.com) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTPS id 6817378 for flyrotary@lancaironline.net; Mon, 07 Apr 2014 10:27:44 -0400 Received-SPF: none receiver=logan.com; client-ip=207.46.163.187; envelope-from=SBoese@uwyo.edu Received: from BL2PR05MB098.namprd05.prod.outlook.com (10.255.232.15) by BL2PR05MB100.namprd05.prod.outlook.com (10.255.232.18) with Microsoft SMTP Server (TLS) id 15.0.913.9; Mon, 7 Apr 2014 14:27:05 +0000 Received: from BL2PR05MB098.namprd05.prod.outlook.com ([169.254.2.131]) by BL2PR05MB098.namprd05.prod.outlook.com ([169.254.2.131]) with mapi id 15.00.0913.002; Mon, 7 Apr 2014 14:27:05 +0000 From: "Steven W. Boese" To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: AN 10 PTFE hose and fittings Thread-Topic: [FlyRotary] Re: AN 10 PTFE hose and fittings Thread-Index: AQHPUlXucbmwYNVeUEOVcIumPglJQJsGNjnx Date: Mon, 7 Apr 2014 14:27:04 +0000 Message-ID: <02059E84-2870-47EA-BC36-F55A9FE29ED2@uwyo.edu> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [174.239.108.231] x-forefront-prvs: 0174BD4BDA x-forefront-antispam-report: SFV:NSPM;SFS:(10009001)(428001)(24454002)(377454003)(199002)(189002)(94316002)(65816001)(15975445006)(47976001)(50986001)(81686001)(80976001)(4396001)(75432001)(33656001)(80022001)(66066001)(85852003)(47736001)(83072002)(15202345003)(92566001)(49866001)(81816001)(86362001)(16236675002)(94946001)(92726001)(93136001)(53806001)(93516002)(74706001)(79102001)(20776003)(87266001)(87936001)(63696002)(97186001)(2656002)(81542001)(95666003)(36756003)(85306002)(76786001)(90146001)(97336001)(16601075003)(54316002)(56816005)(77982001)(98676001)(74876001)(56776001)(76482001)(59766001)(81342001)(74366001)(46102001)(82746002)(83716003)(77096001)(83322001)(74502001)(69226001)(99396002)(74662001)(19580395003)(95416001)(31966008)(54356001)(47446002)(19580405001)(76796001)(80792004)(55214004);DIR:OUT;SFP:1101;SCL:1;SRVR:BL2PR05MB100;H:BL2PR05MB098.namprd05.prod.outlook.com;FPR:CFCF1ED.2DE66D25.30F1113F.90EA716D.2036C;MLV:sfv;PTR:InfoNoRecords;A:1;MX:1;LANG:en; received-spf: None (: uwyo.edu does not designate permitted sender hosts) Content-Type: multipart/alternative; boundary="_000_02059E84287047EABC36F55A9FE29ED2uwyoedu_" MIME-Version: 1.0 X-OriginatorOrg: uwyo.edu --_000_02059E84287047EABC36F55A9FE29ED2uwyoedu_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Bobby, The fittings in the photo attached to the braided stainless steel - PTFE ho= se with a nut and ferrule. Assembling the hose to the fitting by following= their instructions was successful. The installation of the hose assembly = to the mating male fitting is where the failures occurred. Steve On Apr 7, 2014, at 5:38 AM, "Bobby J. Hughes" > wrote: Steve Siliconeintakes.com appears to sell a different= fitting that includes a ferrule for PTFE hose. My PTFE hose and fittings = were purchased from Pegasus and the fittings are a third type. They install= ed easily but were more expensive. Bobby Sent from my iPad On Apr 7, 2014, at 1:13 AM, "Steven W. Boese" > wrote: At the end of November last year, I responded to an inquiry from Charlie co= ncerning AN PTFE hose and fittings from siliconeintakes.com. I stated that my experience with their products and service = was positive but that I had not specifically tried their hose and fittings. I now have some experience with their AN10 PTFE hose and fittings as shown = in the attached photo. The fitting is manufactured by placing the blue nut= on the red fitting and inserting the heavy wire through the hole in the nu= t. The wire captures the nut and allows it to rotate relative to the fitti= ng. When the tapered part of the fitting first contacts the male end to wh= ich it is being connected, the fitting cocks sideways in the nut as seen in= the left side of the photo. If the nut is tightened further, the fitting = rotates with the nut and thus maintaining proper alignment of the angled fi= tting is nearly impossible. If the fitting is restrained from rotating, th= e wire inside the nut digs into the fitting and then comes out of the back = of the nut with the results as seen in the right side of the photo. I have= used fittings of similar design from other vendors successfully. Apparent= ly the dimensions of the wire or the grooves in the siliconeintakes nut and= /or fitting are not correct, or the aluminum alloy used is too soft, or the= re may be some other defect. I tried installing two 90 degree fittings and= two 45 degree fittings and all of them failed. Steve Boese RV6A, 1986 13B NA, RD1A, EC2 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.= html --_000_02059E84287047EABC36F55A9FE29ED2uwyoedu_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Bobby,

The fittings in the photo attached to the braided stainless steel - PT= FE hose with a nut and ferrule.  Assembling the hose to the fitting by= following their instructions was successful.  The installation of the= hose assembly to the mating male fitting is where the failures occurred.

Steve

On Apr 7, 2014, at 5:38 AM, "Bobby J. Hughes" <bhughes@qnsi.net> wrote:

Steve

Siliconeintakes.com appears= to sell a different fitting that includes a ferrule for PTFE hose.  M= y PTFE hose and fittings were purchased from Pegasus and the fittings are a= third type. They installed easily but were more expensive. 

Bobby

Sent from my iPad

On Apr 7, 2014, at 1:13 AM, "Steven W. Boese" <SBoese@uwyo.edu> wrote:

At the end of November last year, I responded to an inquiry from Charlie= concerning AN PTFE hose and fittings from siliconeintakes.com.  I sta= ted that my experience with their products and service was positive but tha= t I had not specifically tried their hose and fittings.

 

I now have some experience with their AN10 PTFE hose and fittings as sho= wn in the attached photo.  The fitting is manufactured by placing= the blue nut on the red fitting and inserting the heavy wire through the h= ole in the nut.  The wire captures the nut and allows it to rotate relative to the fitting.  When the tapered pa= rt of the fitting first contacts the male end to which it is being connecte= d, the fitting cocks sideways in the nut as seen in the left side of the ph= oto.  If the nut is tightened further, the fitting rotates with the nut and thus maintaining proper alignment of = the angled fitting is nearly impossible.  If the fitting is restrained= from rotating, the wire inside the nut digs into the fitting and then come= s out of the back of the nut with the results as seen in the right side of the photo.  I have used fit= tings of similar design from other vendors successfully.  Apparently t= he dimensions of the wire or the grooves in the siliconeintakes nut an= d/or fitting are not correct, or the aluminum alloy used is too soft, or there may be some other defect.  = I tried installing two 90 degree fittings and two 45 degree fittings and al= l of them failed.

 

Steve Boese
RV6A, 1986 13B NA, RD1A, EC2

 

  

 

 

<AN10 fitting.jpg>
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