X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.121] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3748326 for flyrotary@lancaironline.net; Tue, 07 Jul 2009 15:43:57 -0400 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.121; envelope-from=eanderson@carolina.rr.com Received: from computername ([75.191.186.236]) by cdptpa-omta04.mail.rr.com with ESMTP id <20090707194312327.QOKJ2041@cdptpa-omta04.mail.rr.com> for ; Tue, 7 Jul 2009 19:43:12 +0000 From: "Ed Anderson" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: SAG - NKG Date: Tue, 7 Jul 2009 15:43:29 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0041_01C9FF19.AD979EB0" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: Acn/IZVDJAt7+HWxRMOdlXOYd61ZTAAGXa4w X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 In-Reply-To: Message-Id: <20090707194312327.QOKJ2041@cdptpa-omta04.mail.rr.com> This is a multi-part message in MIME format. ------=_NextPart_000_0041_01C9FF19.AD979EB0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Boy, thanks, Bill Never would have even occurred to me to watch out for mushrooming fine wire electrodes - the knowledge and experience on this list is fabulous!! Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of wrjjrs@aol.com Sent: Tuesday, July 07, 2009 12:38 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: SAG - NKG Mark, One thing to watch out for on the fine-wire plugs, is NOT to run dual lead coils. Some of the systems for the 20B fire both plugs at the same time. This isn't a problem, but some of the engine management systems use 3 coils with dual high-tension leads to make things simpler. Since most of the dual-lead coils use a floating secondary one plug fires normally and the other fires BACKWARD sidewire to center electrode. The plug that fires backward will wear the center electrode out faster. That isn't a problem with standard plugs, but on the high end platinum or iridium plugs the center electrode will erode or mushroom on the end. We saw this all the time on 4 cylinder motorcycle engines where they always used 2 dual lead coils to make the system cost less. The newer high performance bikes have gone to coil on plug designs, and switch the low tension side to eleiminate the problem. Bill Jepson -----Original Message----- From: Mark Steitle To: Rotary motors in aircraft Sent: Tue, Jul 7, 2009 7:25 am Subject: [FlyRotary] Re: SAG - NKG John, I've been running Renesis (irridium) plugs in my 20B with good results. Of course, they're about 5 times the price of the standard plugs. But if they last 5 times longer, I feel that they are worth the price. Mark S. On Tue, Jul 7, 2009 at 9:05 AM, John wrote: Ed, it appears to me that the NKG report is suggesting that we use hotter spark plugs, has anyone tried this. JohnD _____ A Good Credit Score is 700 or Above. See yours in just 2 easy steps! ------=_NextPart_000_0041_01C9FF19.AD979EB0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Boy, thanks, = Bill

 

Never would have even occurred to = me to watch out for mushrooming fine wire electrodes – the knowledge and experience on this list is fabulous!!

 

Ed

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of wrjjrs@aol.com
Sent: Tuesday, July 07, = 2009 12:38 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = SAG - NKG

 

Mark,
One thing to watch out for on the fine-wire plugs, is NOT to run dual = lead coils. Some of the systems for the 20B fire both plugs at the same time. = This isn't a problem, but some of the engine management systems use 3 coils = with dual high-tension leads to make things simpler. Since most of the = dual-lead coils use a floating secondary one plug fires normally and the other = fires BACKWARD sidewire to center electrode. The = plug that fires backward will wear the center electrode out faster. That isn't a = problem with standard plugs, but on the high end platinum or iridium plugs the = center electrode will erode or mushroom on the end. We saw this all the = time on 4 cylinder motorcycle engines where they always used 2 dual lead = coils to make the system cost less. The newer high performance bikes have gone to = coil on plug designs, and switch the low tension side to eleiminate the = problem.
Bill Jepson 


-----Original Message-----
From: Mark Steitle <msteitle@gmail.com>
To: Rotary motors in = aircraft <flyrotary@lancaironline.net>
Sent: Tue, Jul 7, 2009 7:25 am
Subject: [FlyRotary] Re: SAG - NKG

John,

 

I've been running Renesis (irridium) plugs in my 20B with good results.  Of course, they're about 5 times the price of the = standard plugs.  But if they last 5 times longer, I feel that they are worth the price.

 

Mark S.  =

On Tue, Jul 7, 2009 at 9:05 AM, John <downing.j@sbcglobal.net> = wrote:

Ed, it appears to me that the NKG report is suggesting that we use hotter spark plugs, has anyone tried this.  JohnD

 

 

=

A Good Credit Score is 700 or Above. See yours in just 2 easy steps!

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