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 3747800 for flyrotary@lancaironline.net; Tue, 07 Jul 2009 10:25:06 -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-omta03.mail.rr.com with ESMTP id <20090707142428349.ZHYE19903@cdptpa-omta03.mail.rr.com> for ; Tue, 7 Jul 2009 14:24:28 +0000 From: "Ed Anderson" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] SAG - NKG Date: Tue, 7 Jul 2009 10:24:45 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0003_01C9FEED.26A45D20" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: Acn/DBEyWN9zxR0FTiiTSyD+Nd14QwAATBWw In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Message-Id: <20090707142428349.ZHYE19903@cdptpa-omta03.mail.rr.com> This is a multi-part message in MIME format. ------=_NextPart_000_0003_01C9FEED.26A45D20 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hi John, Certainly seems to suggest a hotter plug to better clear fouling - but I'm a bit cautious about going to hotter plugs than stock. If the plug is too hot, the pre-ignition can occur - so looks like you need to find some combination that is - Just Right. The only time I attempted to use other than stock plugs on the first flight I lost the apex seals on a rotor. I naturally thought the new spark plugs were the cause, it turned out that after tearing down the engine that the plugs had nothing to do with the lost apex seals, but never got around to trying different spark plugs after that {:>). I suspect that due to the fact our spark plugs are shrouded in their chamber combined with the fact that the stock plugs have the three massive ground electrodes surrounding the point all contribute to lower spark plug temperatures and probably all contribute to the frequent fouling. So a hotter plug with only one ground electrode might do better on fouling. 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 John Sent: Tuesday, July 07, 2009 10:06 AM To: Rotary motors in aircraft Subject: [FlyRotary] SAG - NKG Ed, it appears to me that the NKG report is suggesting that we use hotter spark plugs, has anyone tried this. JohnD __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ------=_NextPart_000_0003_01C9FEED.26A45D20 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi John, Certainly seems to suggest = a hotter plug to better clear fouling  – but I’m a bit = cautious about going to hotter plugs than stock.  If the plug is too hot, = the pre-ignition can occur – so looks like you need to find some combination that = is - Just Right.  The only time I attempted to use other than stock plugs on = the first flight I lost the apex seals on a rotor.  I naturally thought = the new spark plugs were the cause, it turned out that after tearing down = the engine that the plugs had nothing to do with the lost apex seals, but = never got around to trying different spark plugs after that = {:>).

 

I suspect that due to the fact our = spark plugs are shrouded in their chamber combined with the fact that the = stock plugs have the three massive ground electrodes surrounding the point all = contribute to lower spark plug temperatures and probably all contribute to the = frequent fouling.  So a hotter plug with only one ground electrode might do = better on fouling.

 

Ed

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of John
Sent: Tuesday, July 07, = 2009 10:06 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] SAG = - NKG

 

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



__________ Information from ESET NOD32 Antivirus, version of virus = signature database 3267 (20080714) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com



__________ Information from ESET NOD32 Antivirus, version of = virus signature database 3267 (20080714) __________

The message = was checked by ESET NOD32 Antivirus.

http://www.eset.com
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