X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-pa0-f52.google.com ([209.85.220.52] verified) by logan.com (CommuniGate Pro SMTP 6.0c1) with ESMTPS id 5796605 for flyrotary@lancaironline.net; Sat, 06 Oct 2012 16:37:32 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.220.52; envelope-from=msteitle@gmail.com Received: by mail-pa0-f52.google.com with SMTP id hz10so2570072pad.25 for ; Sat, 06 Oct 2012 13:36:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=ewaX6J76Zj1FrGehL1ZkRDtLDZHouQl4mK1Z0QgzS2c=; b=npqtEnt3fOJobIQO6NMUDnYldzWihmYnlYLVsydiwhvgnJlnwpzOrcDhIz8HO/nNAb HrJhRkqZmD7Y0/+mcdAS+64UIsL3EL12Eo/sYLIwpUe/nIb135uP2EFjn0SmVOfOtRRP bXecSGFWYp9752QjRdzgLerCibPPtwlF7Qq0t3XaMjsAHBVQMAFqDw1NRGlCYzB7yVxO FSQi8XSnjHa/n0wI5XBkTpgIZ1+zCp4NrXMBwXyT6qvWEBrjzeK/1kZRxGt87hbxvkLQ LL8/nEbjULKzhgHgSxN5bi7bidWO3KR7uDelmT/PqD8Uqf/X6A5o/Ts33umgL2n51yyn ySzw== MIME-Version: 1.0 Received: by 10.68.213.138 with SMTP id ns10mr40871104pbc.157.1349555817259; Sat, 06 Oct 2012 13:36:57 -0700 (PDT) Received: by 10.66.235.133 with HTTP; Sat, 6 Oct 2012 13:36:57 -0700 (PDT) In-Reply-To: References: Date: Sat, 6 Oct 2012 15:36:57 -0500 Message-ID: Subject: Re: [FlyRotary] Re: Rotary Get-Together reminder From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=e89a8ff1c22c17a40704cb69f378 --e89a8ff1c22c17a40704cb69f378 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable David, Have you tried the RX-8 irridium spark plugs? I've been running them in my p-port 20b for some time now with good results. I may try your trick of running the trailing plug in both the leading and trailing. Rock Auto has them for $17/ea. Mark S. On Sat, Oct 6, 2012 at 11:15 AM, David Leonard wrote: > Steve, YOU ARE MY HERO! Rarely outside the realm of paid research taking > years have we come across such a complete, thoughtful, yet succinct expos= =E8 > on any subject. > > I have been using the BUR bla bla -9 plugs (stock trailing plugs) on both > the leading and trailing applications for a while now with minimal effect > if any (they are the coldest stock plugs sold by Mazdatrix). Makes sense > now that I read the Boese law of SAG. I think it is time to try out some > of these even colder plugs sold by Racingbeat and see if I can get a more > than 25 hrs or so. Actually, if I just use them in the trailing slot, an= d > the -9 stock plugs in the leading slot, it should be just as effective. > The idea being not that I need them cooler when new, but there should be > more allowance for core degradation before SAG begins. Also, running > cooler they may not degrade as quickly. > > http://www.racingbeat.com/RX7-1986-1992/Ignition/11547.html > > They are not cheap! could go through 4 regular plugs for the price of one > of these... and they need a special thin-walled socket to install them an= d > RB is charging $81 for those. Will look around for better prices. > > -- > David Leonard > > Turbo Rotary RV-6 N4VY > http://N4VY.RotaryRoster.net > http://RotaryRoster.net > > On Fri, Oct 5, 2012 at 3:26 PM, Steven W. Boese wrote: > >> The content of the SAG presentation last weekend at Pocahontis has been >> added to the website: >> >> >> >> www.rotarycopilot.com >> >> >> >> as a page labeled "SAG part 2". >> >> >> >> The conclusion of the study is that if SAG develops on both rotors of a >> 13B, power to all the ignition coils could shut off and the engine would >> continue to run. This is yet to be tested in flight, however. >> >> >> >> The only photos of the event I took are not posted since they were of th= e >> chorus line of wives. Sorry, you had to be there. >> >> >> >> Steve Boese >> RV6A, 1986 13B NA, RD1A, EC2 >> >> >> >> > > > > --e89a8ff1c22c17a40704cb69f378 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable David,=A0

Have you tried the RX-8 irridium spark plugs? = =A0I've been running them in my p-port 20b for some time now with good = results. =A0I may try your trick of running the trailing plug in both the l= eading and trailing. =A0Rock Auto has them for $17/ea.=A0

Mark S.=A0


On S= at, Oct 6, 2012 at 11:15 AM, David Leonard <wdleonard@gmail.com><= /span> wrote:
Steve, YOU ARE MY HERO!=A0 Rarely outside th= e realm of paid research taking years have we come across such a complete, = thoughtful, yet succinct expos=E8 on any subject.

I have been using the BUR bla bla -9 plugs (stock trailing plugs) on bo= th the leading and trailing applications for a while now with minimal effec= t if any (they are the coldest stock plugs sold by Mazdatrix).=A0 Makes sen= se now that I read the Boese law of SAG.=A0 I think it is time to try out s= ome of these even colder plugs sold by Racingbeat and see if I can get a mo= re than 25 hrs or so.=A0 Actually, if I just use them in the trailing slot,= and the -9 stock plugs in the leading slot, it should be just as effective= .=A0 The idea being not that I need them cooler when new, but there should = be more allowance for core degradation before SAG begins.=A0 Also, running = cooler they may not degrade as quickly.

http://www.racingbeat.com/RX7-1986-1992/Ignition/11547.h= tml

They are not cheap! could go through 4 regular plugs for the= price of one of these... and they need a special thin-walled socket to ins= tall them and RB is charging $81 for those.=A0 Will look around for better = prices.

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net<= br>http://RotaryRoste= r.net

On Fri, Oct 5, 2012 at 3:26 PM, Steven W. Boese <SBoese@uwyo.edu> wrote:

The content of the SAG presentation last weekend at=A0Pocahontis = has been added to the website:

=A0

www.rotarycop= ilot.com

=A0

as a page labeled "SAG part 2".

=A0

The conclusion of the study is that if SAG develops on both rotors of a = 13B, power to all the ignition coils could shut off and the engine w= ould continue to run.=A0 This is yet to be tested in flight, however.

=A0

The only photos of the event I took=A0are not posted since=A0they were= =A0of the chorus line of wives.=A0 Sorry, you had to be there.

=A0

Steve Boese

RV6A, 1986= =A013B NA, RD1A, EC2


=A0





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