X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp104.sbc.mail.mud.yahoo.com ([68.142.198.203] verified) by logan.com (CommuniGate Pro SMTP 5.1.2) with SMTP id 1561549 for flyrotary@lancaironline.net; Mon, 13 Nov 2006 13:13:30 -0500 Received-SPF: none receiver=logan.com; client-ip=68.142.198.203; envelope-from=dcarter11@sbcglobal.net Received: (qmail 90296 invoked from network); 13 Nov 2006 18:11:23 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=sbcglobal.net; h=Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=eqSNaapRw6cXr86g8LEju5vFewAx729KSSKlyladNENDU8cBK+Yy1YyQpjeAlQOCLNLCFMTQsyU4aIQ/ljNlsXaUYeBj71W6oQUZODpueLnGMviwaJuIYO2p6bMLy3Ra5XpgXoV3yq2DMtCt5qoA19vVBcxPWD6RV/bYEBOflDk= ; Received: from unknown (HELO davidsdell8200) (dcarter11@sbcglobal.net@71.35.239.51 with login) by smtp104.sbc.mail.mud.yahoo.com with SMTP; 13 Nov 2006 18:11:22 -0000 Message-ID: <011701c7074f$1e70aca0$0701a8c0@davidsdell8200> From: "David Carter" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Cleaning spark plugs Date: Mon, 13 Nov 2006 11:11:18 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0114_01C70714.715A4470" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 This is a multi-part message in MIME format. ------=_NextPart_000_0114_01C70714.715A4470 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sounds like an experiment is in order - to see if it cleans plugs, too. = However, Ed's point about lead fouling has to be kept in mind - we are = talking about two kinds of fouling - carbon and lead. . . . I'd think the "water cleansing thing" might not be as effective up = inside the spark plug ceramic area as on the more exposed rotor = surfaces. About lead, Ed gave some good tips. His tips about selective use of = EC-2 features to increase temp in the rotor's combustion chambers is = consistent with the standard practice with air cooled piston aircraft = engines - when rpm drop is too much when checking mags during pre-flight = run-up, and it runs rough on 1 mag, we increase the rpm to generate some = heat and lean a bunch while running up on the ground - usually clears = whatever fouling (lead, assumed, or carbon) was causing the misfiring. = Clears up in 30 to 60 seconds of running. . . . Doing Ed's equivalent in the air sounds like the same principle = and seems to be good advice. David >=20 > We were discussing ways of cleaning the plugs a while back, but just=20 > recently Lynn related to us how to clean out the combustion chamber=20 > using a cup of water. I wouldn't want to stand next to a prop, = pouring=20 > water in the carbeurator of a nearly choking engine, but would it be a = > worthwhile experiment to hook a miniature garden sprayer to the = intake? =20 > Would it be likely to clean out a SAGged plug? >=20 > --=20 > ,|"|"|, Ernest Christley | ------=_NextPart_000_0114_01C70714.715A4470 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Sounds like an experiment is in order = - to see=20 if it cleans plugs, too.  However, Ed's point about lead fouling = has to be=20 kept in mind - we are talking about two kinds of fouling - carbon and=20 lead.
. . . I'd think the "water cleansing = thing" might=20 not be as effective up inside the spark plug ceramic area as on the more = exposed=20 rotor surfaces.
 
About lead,  Ed gave some good = tips.  His=20 tips about selective use of EC-2 features to increase temp in the = rotor's=20 combustion chambers is consistent with the standard practice with air = cooled=20 piston aircraft engines - when rpm drop is too much when checking mags = during=20 pre-flight run-up, and it runs rough on 1 mag, we increase the rpm to = generate=20 some heat and lean a bunch while running up on the ground - usually = clears=20 whatever fouling (lead, assumed, or carbon) was causing the = misfiring. =20 Clears up in 30 to 60 seconds of running.
. . . Doing Ed's equivalent in the air = sounds like=20 the same principle and seems to be good advice.
 
David
 
>=20
> We were discussing ways of  cleaning the plugs a while = back, but=20 just
> recently Lynn related to us how to clean out = the=20 combustion chamber
> using a cup of water.  I = wouldn't=20 want to stand next to a prop, pouring
> water in the carbeurator = of a=20 nearly choking engine, but would it be a
> worthwhile = experiment to hook a miniature garden sprayer to the = intake? =20
> Would it be likely to clean out a SAGged=20 plug?
>
> --=20
>        =20 ,|"|"|,           =   =20 Ernest Christley       = |
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