X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-ob0-f180.google.com ([209.85.214.180] verified) by logan.com (CommuniGate Pro SMTP 6.0c1) with ESMTPS id 5796606 for flyrotary@lancaironline.net; Sat, 06 Oct 2012 16:51:46 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.180; envelope-from=keltro@gmail.com Received: by mail-ob0-f180.google.com with SMTP id dn14so2337408obc.25 for ; Sat, 06 Oct 2012 13:51:12 -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=w5eQX1yt+q1gng3TXOyOuKx6P4jRhTYqiLBcZDvKbhw=; b=rqNTB1xmlYA6Pp3R3eozsJD0+BJ9rEB/pC3nsjYKKtuzNgp2QIlTiFGVhjYOdLVq57 E2X1LMZ0e12UPc7NaHMDaj2VnrdZqbptb7Uhu10g/fmihzbZpJqVAh/1sfn+KBrg6Hd8 fwcUEHPjZkCgH3gwhA3n6p4IGCk7blfiWA2wCnm2VC+mCwF03M6elPXjIrdac4Ncx37e Y9ujy+QoX5kEBcgAkqhDCDoMj+vs7dks/oZpQYxdAN/bI6mGVwR5HLZPCiR6X3NJrmVC 6IvcDdfTOqqt2hS2tG2Ik6dQWJj2P1ShwLFyO1bJ/j4l7i5fAE2o7fnr6agvC37r7fgK ObQQ== MIME-Version: 1.0 Received: by 10.60.22.71 with SMTP id b7mr9710188oef.6.1349556672872; Sat, 06 Oct 2012 13:51:12 -0700 (PDT) Received: by 10.60.8.41 with HTTP; Sat, 6 Oct 2012 13:51:12 -0700 (PDT) In-Reply-To: References: Date: Sat, 6 Oct 2012 15:51:12 -0500 Message-ID: Subject: Re: [FlyRotary] colder spark plugs From: Kelly Troyer To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=e89a8f839e8f17427904cb6a26b3 --e89a8f839e8f17427904cb6a26b3 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Steve, Are these -10 plugs NGK ?.............My memory fails me as I do not recall stock -10 heat range............ I also much appreciate your unpaid and freely shared research............ Kelly Troyer On Sat, Oct 6, 2012 at 1:12 PM, Steven W. Boese wrote: > David, > > > > Thank you for the compliment. > > > > I have installed a set of the -10 spark plugs and at this point they are > long past the time where the stock plugs normally needed to be replaced. > How long they will continue to work is unknown, but at least that one dat= a > point is consistent with the study and encouraging. > > > > Rather than purchasing the expensive thin walled socket, a tool was made > to enlarge the spark plug well in the housing so a conventional socket > could be used. While not elegant, this was done with the engine in the > plane and involved minimal expense. > > > > Steve Boese > RV6A, 1986 13B NA, RD1A, EC2 > > > ------------------------------ > *From:* Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf > of David Leonard [wdleonard@gmail.com] > *Sent:* Saturday, October 06, 2012 10:15 AM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: Rotary Get-Together reminder > > Steve, YOU ARE MY HERO! Rarely outside the realm of paid research > taking years have we come across such a complete, thoughtful, yet succinc= t > 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 >> >> >> >> > > > > --e89a8f839e8f17427904cb6a26b3 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Steve,
=A0 =A0Are these -10 plugs NGK ?.............My memory fails me = as I do not recall stock -10 heat range............
I also much a= ppreciate your unpaid and freely shared research............

=
Kelly Troyer

On Sat, Oct 6, 2012 at = 1:12 PM, Steven W. Boese <SBoese@uwyo.edu> wrote:

David,

=A0

Thank you for the compliment.

=A0

I have installed a set of the -10 spark plugs and at this point they are= long past the=A0time where the stock plugs normally needed to be replaced.= =A0 How long they will continue to work is unknown, but at least that one d= ata point is consistent with the study and encouraging.

=A0

Rather than purchasing the expensive thin walled socket,=A0a tool was ma= de to enlarge the spark plug well in the housing so a conventional socket c= ould be=A0used.=A0 While not elegant, this was done with the engine in the = plane=A0and involved minimal expense.

=A0

Steve Boese

RV6A, 1986 13B NA, RD1A, EC2

=A0

Fro= m: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of David= Leonard [wdleonar= d@gmail.com]
Sent: Saturday, October 06, 2012 10:15 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Rotary Get-Together reminder

Steve, YOU ARE MY HERO!=A0 Rarely outside the realm of paid research t= aking years have we come across such a complete, thoughtful, yet succinct e= xpos=E8 on any subject.

I have been using the BUR bla bla -9 plugs (stock trailing plugs) on both t= he leading and trailing applications for a while now with minimal effect if= any (they are the coldest stock plugs sold by Mazdatrix).=A0 Makes sense n= ow that I read the Boese law of SAG.=A0 I think it is time to try out some of these even colder plugs sold by Raci= ngbeat and see if I can get a more than 25 hrs or so.=A0 Actually, if I jus= t 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 m= ore allowance for core degradation before SAG begins.=A0 Also, running cool= er they may not degrade as quickly.

http://www.racingbeat.com/RX7-1986-1992/Ignition/11547.html<= /a>

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

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.Rota= ryRoster.net
http://RotaryRoster.n= et

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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