X-Virus-Scanned: clean according to Sophos on Logan.com From: "Bill Schertz" Received: from mail-pa0-f47.google.com ([209.85.220.47] verified) by logan.com (CommuniGate Pro SMTP 6.1.12) with ESMTPS id 9008265 for flyrotary@lancaironline.net; Tue, 04 Oct 2016 15:04:53 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.220.47; envelope-from=wschertz343@gmail.com Received: by mail-pa0-f47.google.com with SMTP id ik13so22592681pac.2 for ; Tue, 04 Oct 2016 12:04:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:from:to:references:in-reply-to:subject:date:mime-version :importance; bh=4mu2sfDAeh0fCrLPoYxjrPJpIJmrK69w31j/hqn7hAU=; b=y1w9iXI7PYq908sHqCNLB1e+UUNL6i/AWKE9eHAp5PrVNDHNXd+FLH17pdnkoXNd1c RTxmqVa/QrTBLjn3zpz8MJqlu4lX5QpKFqXYS41L+y8HHNQKc7MFcYLz/sFkwxvMIW5l mPUyloB/MZ01aw93nNQeq6DPWwmN5ElOS/LTTyL4B0pWomJ+BnyjH+vDPaN0hJvuph4a cQVw3MA1i1yz/OKRIb2+0ip2jLnIyRjVRPdzHGbg05OiGMaMAY6KS1jk+PuqwURx8jeq Nfno57IsP5OJIhyM3+NJu8eWmIZB2HWEgn3wNKeFoJQxr64nQJezzea+JcvvfvmZap4N ln2w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:from:to:references:in-reply-to :subject:date:mime-version:importance; bh=4mu2sfDAeh0fCrLPoYxjrPJpIJmrK69w31j/hqn7hAU=; b=dhZvYub1nW3bu9XMiBji0PtoQLves7BA5S3fU6azm6ffNd8hDEQkY272LJeOaLUYhA 911DifUXFrGxDlgpjAhK5DAKqD0Wun9qclhSekmCYKqEQQ+EV+Jd2t/bANhgwjaBv8/b 91cm35JIaQhobJ43BOoHYXTjlGs5COO2rpCn17unfU4HyGYWhcQG6r2dWRE/BGDKxHQW 3H9WgC3PUda3CrY5n/z8/fvvHwy/LPEMSYvqY5lWjNObetxuoHTUYXJnUeSU0oLuKe7M 94lpDMw8PnmFZVCqAor7Uk3xReYf5h0rEGQjmDm4BfzuX6VHW8HxhzvbDX7wGNGYZ9m9 0bAg== X-Gm-Message-State: AA6/9Rmwkz2sdzju6TDiPe8fkkPejTMP62FZ933O38gBfXnO/praAcPiTL0ka8rhxesmJw== X-Received: by 10.66.72.103 with SMTP id c7mr7180350pav.15.1475607876857; Tue, 04 Oct 2016 12:04:36 -0700 (PDT) Return-Path: Received: from OwnerPC (host-184-166-88-214.msl-mt.client.bresnan.net. [184.166.88.214]) by smtp.gmail.com with ESMTPSA id p73sm57042132pfk.60.2016.10.04.12.04.35 for (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 04 Oct 2016 12:04:36 -0700 (PDT) Message-ID: <26EA05A5C67E4217BA2FB873AE711646@OwnerPC> To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] cold spark plugs Date: Tue, 4 Oct 2016 13:04:29 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0140_01D21E3F.D7D6D7C0" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3555.308 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3555.308 This is a multi-part message in MIME format. ------=_NextPart_000_0140_01D21E3F.D7D6D7C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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 From: Steven W. Boese=20 Sent: Tuesday, October 04, 2016 11:29 AM To: Rotary motors in aircraft=20 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 = indication 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 from the stock spark plugs. 91 octane non alcohol automotive = fuel was used exclusively during that time. Steve Boese RV6A, 1986 13B NA, RD1A, EC2 From: Charlie England =20 Subject: Chilled spark plugs: Thermal paste?=20 Date: Sat, 20 Aug 2016 08:30:03 -0500=20 To: Rotary motors in aircraft = =20 =20 =20 =20 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 recommendations for spark plugs in their engines. One thing they = require, 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/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 some point in my = past.=20 Recent and recurring discussions about needing colder plugs in = high duty cycle rotaries, including Steve Boese's research several years = ago, got me thinking about connecting the two dots.=20 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=20 ------=_NextPart_000_0140_01D21E3F.D7D6D7C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Steve,
Do the BR10EIX plugs have the same body length as the NGK plugs or = do you=20 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 = what=20 effect thermal paste on the spark plug threads would have.  As long = as it=20 doesn't cause galling of the aluminum rotor housing, I don't see how it = would=20 hurt.

 

Having replaced the BR10EIX spark plugs after 180 hours of use with = no=20 indication of problems during that time, it appears that the lifetime of = those=20 plugs is at least an order of magnitude greater than what I was getting = from the=20 stock spark plugs.  91 octane non alcohol automotive fuel was used=20 exclusively during that time.

 

Steve Boese
RV6A, 1986 13B NA, RD1A,=20 EC2

 

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

=20
An article in Sport Aviation several months ago = (which I just=20 got around to reading; unusual to find useful info there) talked = about=20 Rotax's recommendations for spark plugs in their engines. One = thing they=20 require, in addition to using the correct heat range, was the use = of=20 thermal conducting paste (similar to what you'd put on a power = transistor=20 or computer CPU heat sink) to provide better/faster heat transfer = from the=20 plug threads to the head. Now, I've been messing with IC engines = for=20 around 50 years, and while I use anti seize religiously on my Lyc = plugs,=20 and occasionally on other stuff, I've never thought about using = thermal=20 paste.  Must have missed a memo at some point in my past.=20
 
Recent and recurring discussions about needing colder plugs = in high=20 duty cycle rotaries, including Steve Boese's research several = years ago,=20 got me thinking about connecting the two dots.
 
Since I'm not flying yet, is there anyone out there who's = flying a=20 lot who thinks it might be worth a shot to see if it will extend = the life=20 of their already cold plugs?
 
=
Charlie

------=_NextPart_000_0140_01D21E3F.D7D6D7C0--