X-Virus-Scanned: clean according to Sophos on Logan.com From: "Steven W. Boese" Received: from [104.47.38.111] (HELO NAM02-BL2-obe.outbound.protection.outlook.com) by logan.com (CommuniGate Pro SMTP 6.1.12) with ESMTPS id 9009196 for flyrotary@lancaironline.net; Tue, 04 Oct 2016 22:00:15 -0400 Received-SPF: none receiver=logan.com; client-ip=104.47.38.111; 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; bh=iQV8h5gk9oDEukod6vUMidQT4hLQF9ogrjPBEXXAVKQ=; b=M0cUxbvTACeccdBqyXmcLzbcz/6pZ8NRTgbPqWkVtjxVARh8fGf8f3inP0w98IFge4LF4Yn7Axv1NeAiyVZAU9Rx9LuKu3GtpZcE5LsbdZoAzA+thsV314ASjGOrUnOwSAJvJ1zBXFHfjXzAw59Vw308f7u8D8cvhLdpPM08iRk= Received: from CY1PR05MB2201.namprd05.prod.outlook.com (10.166.192.13) by CY1PR05MB2203.namprd05.prod.outlook.com (10.166.192.15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.659.8; Wed, 5 Oct 2016 01:59:58 +0000 Received: from CY1PR05MB2201.namprd05.prod.outlook.com ([10.166.192.13]) by CY1PR05MB2201.namprd05.prod.outlook.com ([10.166.192.13]) with mapi id 15.01.0659.009; Wed, 5 Oct 2016 01:59:58 +0000 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: cold spark plugs Thread-Topic: [FlyRotary] Re: cold spark plugs Thread-Index: AQHSHnJITo6VCYCTjEeAr3TVz0dO4KCZGe22 Date: Wed, 5 Oct 2016 01:59:58 +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: [132.245.41.85] x-ms-office365-filtering-correlation-id: 4d114a7e-769a-46ba-9223-08d3ecc34f3b x-microsoft-exchange-diagnostics: 1;CY1PR05MB2203;6:l6IoHtV3mgooEOPftvWGC2VaG1jizNdwuzRe9fZCF3RcfaHeEB/LEl+A1qLMegV2li5aVx/oRw876sdnmCCsBp7Lp+65/7YCnP+oPodhHwlgOUIePXS24rk8ys9GtlfHp3mmUGJ8E9tK1W1/f2PXVDl7zEl9tl7A4lCOdzH9eTRl5w0TeW0899b1mFsbZt/WuaIC8fUScV0sreEUrxfyFBE1Cxg8BDlLK+HIQziUkHxrhQg+RZXDDFP604kbAFqKyXm1qnvtIxf95B9Y3gFOXSC5d4RklMelWcMxGTECc9SjEUQgzp/dpW9yE1mf2P54;5:xhGQRt3vRi4OkShY6SqCmGJy8l5W6jgh4MbI10cJRK6VfWrEc2m7FKzH2WAOpi1Idhc8T3yMJyqeYqHeKdfrwiDWAMuWROJSg+2sxC9/Pexpahs3xaHoh16LNgAZ73d8pRgBTKKCQIVZ1RfO/XmOjxoK1tvdZTB2NuqeGp8cYHo=;24:mSO1p5AB5zzRSXQJSebwGHpGHnoTOsq8da/Xl/q28QdL2cDicQUd7SDQRLsRg6XvBITFfU6jgA5cszLDYo3NyubvZRvWvZ14EWDb/pHu/mg=;7:Vihcoz5UVcrYN48yDE8TnnPq/aACe+srZZTSg4FarX0JzS8CJ3PYtuMrp043MoYOBLYR1HbhjRdEJ2yCer5d66wbVyMk9A9PDMeECABr6Cpst6+j0m7hkvU06dSw94IGfN1xnI7u8hXYak0NCwWRCLWc1Xul4GusJ5cv8ylS4JUmnG/zQIR4ROKHBniadSLSwAiwAQo1yEmiAWxszkxtkMhg3EXGxM1LFI9x13pwVJVxOOtPVOFObn+yzrpsrZPlJy4+kuz2RVlsZoVuPkhz6UcdCMoPTUXRixFhdP8cmL7SAELAcCvmDCmhHKiLYiH3 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:CY1PR05MB2203; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(6040176)(601004)(2401047)(5005006)(8121501046)(3002001)(10201501046);SRVR:CY1PR05MB2203;BCL:0;PCL:0;RULEID:;SRVR:CY1PR05MB2203; x-forefront-prvs: 008663486A x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(7916002)(199003)(377454003)(189002)(5002640100001)(101416001)(76176999)(586003)(3846002)(102836003)(6116002)(2906002)(450100001)(66066001)(7736002)(54356999)(92566002)(50986999)(10400500002)(122556002)(7846002)(7906003)(16236675004)(7696004)(110136003)(97736004)(80792005)(107886002)(18206015028)(74316002)(2950100002)(2900100001)(6916009)(15395725005)(5660300001)(19627405001)(77096005)(89122001)(106356001)(15975445007)(105586002)(8936002)(189998001)(99286002)(11100500001)(81156014)(81166006)(9686002)(75432002)(19618635001)(106116001)(19625215002)(68736007)(76576001)(3280700002)(86362001)(33656002)(90282001)(8676002)(19617315012)(19580395003)(19580405001)(88552002)(87936001)(3660700001)(3900700001)(7099028);DIR:OUT;SFP:1102;SCL:1;SRVR:CY1PR05MB2203;H:CY1PR05MB2201.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) spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: multipart/alternative; boundary="_000_CY1PR05MB2201AD46C6E7BFDB6EBFD500B9C40CY1PR05MB2201namp_" MIME-Version: 1.0 X-OriginatorOrg: uwyo.edu X-MS-Exchange-CrossTenant-originalarrivaltime: 05 Oct 2016 01:59:58.0533 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f9cdd7ad-825d-4601-8e9c-a325e02d52da X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY1PR05MB2203 --_000_CY1PR05MB2201AD46C6E7BFDB6EBFD500B9C40CY1PR05MB2201namp_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bill, To use the BR10EIX spark plugs, either the rotor housing needs to be counte= rbored to accommodate a standard deep wall socket or a socket with a very t= hin wall needs to be used. Steve ________________________________ From: Rotary motors in aircraft on behalf of = Bill Schertz Sent: Tuesday, October 4, 2016 1:04:29 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: cold spark plugs Steve, Do the BR10EIX plugs have the same body length as the NGK plugs or do you h= ave to have the eyebrows removed? Bill Schertz Lolo, MT From: Steven W. Boese Sent: Tuesday, October 04, 2016 11:29 AM To: Rotary motors in aircraft Subject: [FlyRotary] cold spark plugs Charlie, I meant to reply to your message a long time ago. I don't know what effect= thermal paste on the spark plug threads would have. As long as it doesn't= cause galling of the aluminum rotor housing, I don't see how it would hurt= . Having replaced the BR10EIX spark plugs after 180 hours of use with no indi= cation of problems during that time, it appears that the lifetime of those = plugs is at least an order of magnitude greater than what I was getting fro= m the stock spark plugs. 91 octane non alcohol automotive fuel was used ex= clusively during that time. Steve Boese RV6A, 1986 13B NA, RD1A, EC2 From: Charlie England Subject: Chilled spark plugs: Thermal paste? Date: Sat, 20 Aug 2016 08:30:03 -0500 To: Rotary motors in aircraft [Message Header] [Undecoded Message] An article in Sport Aviation several months ago (which I just got around to= reading; unusual to find useful info there) talked about Rotax's recommend= ations for spark plugs in their engines. One thing they require, in additio= n to using the correct heat range, was the use of thermal conducting paste = (similar to what you'd put on a power transistor or computer CPU heat sink)= to provide better/faster heat transfer from the plug threads to the head. = Now, I've been messing with IC engines for around 50 years, and while I use= anti seize religiously on my Lyc plugs, and occasionally on other stuff, I= 've never thought about using thermal paste. Must have missed a memo at so= me point in my past. Recent and recurring discussions about needing colder plugs in high duty cy= cle rotaries, including Steve Boese's research several years ago, got me th= inking about connecting the two dots. Since I'm not flying yet, is there anyone out there who's flying a lot who = thinks it might be worth a shot to see if it will extend the life of their = already cold plugs? Charlie --_000_CY1PR05MB2201AD46C6E7BFDB6EBFD500B9C40CY1PR05MB2201namp_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Bill,


To use the BR10EIX spark plugs, either the rotor housing needs to be cou= nterbored to accommodate a standard deep wall socket or a socket with a ver= y thin wall needs to be used.


Steve

From: Rotary motors in airc= raft <flyrotary@lancaironline.net> on behalf of Bill Schertz <flyr= otary@lancaironline.net>
Sent: Tuesday, October 4, 2016 1:04:29 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: cold spark plugs
 
Steve,
Do the BR10EIX plugs have the same body length as the NGK plugs or do = you have to have the eyebrows removed?
Bill Schertz
Lolo, MT
 
Sent: Tuesday, October 04, 2016 11:29 AM
Subject: [FlyRotary] cold spark plugs
 

Charlie,

 

I meant to reply to your message a long time ago.  I don't know wha= t effect thermal paste on the spark plug threads would have.  As long = as it doesn't cause galling of the aluminum rotor housing, I don't see how = it would hurt.

 

Having replaced the BR10EIX spark plugs after 180 hours of use with no i= ndication of problems during that time, it appears that the lifetime of tho= se plugs is at least an order of magnitude greater than what I was getting = from the stock spark plugs.  91 octane non alcohol automotive fuel was used exclusively during that time.<= /p>

 

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

 

From: Charlie England <flyrotary@lancaironline.net= >
Subject: Chilled spark plugs: Thermal paste?
Date: Sat, 20 Aug 2016 08:30:03 -0500
To: Rotary motors in aircraft <flyrotary@lancair= online.net>
3D"Message

3D"Undecoded
An article in Sport Aviation several months ago (which I j= ust got around to reading; unusual to find useful info there) talked about = Rotax's recommendations for spark plugs in their engines. One thing they re= quire, in addition to using the correct heat range, was the use of thermal conducting paste (similar to what you'd= put on a power transistor or computer CPU heat sink) to provide better/fas= ter heat transfer from the plug threads to the head. Now, I've been messing= with IC engines for around 50 years, and while I use anti seize religiously on my Lyc plugs, and occasionally o= n other stuff, I've never thought about using thermal paste.  Must hav= e missed a memo at some point in my past.
 
Recent and recurring discussions about needing colder plugs in high du= ty cycle rotaries, including Steve Boese's research several years ago, got = me thinking about connecting the two dots.
 
Since I'm not flying yet, is there anyone out there who's flying a lot= who thinks it might be worth a shot to see if it will extend the life of t= heir already cold plugs?
 
Charlie

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