X-Virus-Scanned: clean according to Sophos on Logan.com From: "Stephen Izett" Received: from mail-pa0-f46.google.com ([209.85.220.46] verified) by logan.com (CommuniGate Pro SMTP 6.1.11) with ESMTPS id 8881257 for flyrotary@lancaironline.net; Wed, 17 Aug 2016 10:25:36 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.220.46; envelope-from=steveize@gmail.com Received: by mail-pa0-f46.google.com with SMTP id fi15so36956920pac.1 for ; Wed, 17 Aug 2016 07:25:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:message-id:mime-version:subject:date:references:to:in-reply-to; bh=0wTPvsvOwOB15zyraS3drnNytVeSA80TFxvbAFvb1NM=; b=DRxTLrB5XyxhOIn5Anse1KjIaPgG4T4ChfAG5PTdyZiL5AZ1Nn3x4NeX1KijbNxLju D6e5tjUb2+l54HaidzYtsfAbJLtuYSBa+2BVDcxeVdlgG+UpxOT5leZn0NnCZ9AF63vX U3sJSB+7oVXETwSHlyrg2STouStu4K8jbkg8TxrWKdu5iePs3jGCcR1/U72M/UhZF3Bf Y6Y6T3YxHcx9YSiB1i9Ls4a5g/IeWsY744/A2dKAIspIjLKoqu78DeLfPnEbLoxv2eYD f+4+ZyOZL87Ewh0F1S7oEy6Aex+ug/tQClKcKeDWJtwbc8u6Gt3Mq0O9Tw8oZTeHzWX9 AjCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:message-id:mime-version:subject:date :references:to:in-reply-to; bh=0wTPvsvOwOB15zyraS3drnNytVeSA80TFxvbAFvb1NM=; b=SrwzBfDUj/5AtCJNrOgjVjX7RGJlBaJPyWw9lalVurH4E9Cn/lRzhWKU45Klb6KE/8 u9mgvhbW9JMVaHM4lEuXxC5kUG8HZp8EPsRA5laIP7yhkRhTPCawsTO0xd8WNXO7eIPl HTsqpGUxLxXfYZPey8M+v8gbYW0cPdv0IOq+iTsJvJdh+H9NbYYx1Y72ybSl9357nI25 Fqx4svXU121pG2Fjij4E6KD25cpA8doTZETKXJzsVHcF2PJddIkrB2erEJh/n6vomPi2 0LrrqmPB/4Bzb/iwkMhdCTiNKBNX+oG2TTdcWp8zyNLLAgOSPKVdPf0tsWeHbAVBmOJC XSsg== X-Gm-Message-State: AEkooutF5oJtc8LdEkK1eeTVajHrmYtDLgVkUj8bPnXQiMeAcGKT7ljvKNJwbufwV8as4g== X-Received: by 10.66.170.44 with SMTP id aj12mr75008291pac.131.1471443915797; Wed, 17 Aug 2016 07:25:15 -0700 (PDT) Return-Path: Received: from [10.1.1.5] (124-148-220-116.dyn.iinet.net.au. [124.148.220.116]) by smtp.gmail.com with ESMTPSA id bx9sm47916049pab.17.2016.08.17.07.25.13 for (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 17 Aug 2016 07:25:15 -0700 (PDT) X-Google-Original-From: Stephen Izett Content-Type: multipart/alternative; boundary="Apple-Mail=_327E0387-F6E2-403D-9F32-82F76BD31C1A" Message-Id: <7114E28C-21AD-45CE-B9F8-60B65255B2EE@icloud.com> Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) Subject: Re: [FlyRotary] He said again...... Date: Wed, 17 Aug 2016 22:25:11 +0800 References: To: Rotary motors in aircraft In-Reply-To: X-Mailer: Apple Mail (2.3124) --Apple-Mail=_327E0387-F6E2-403D-9F32-82F76BD31C1A Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi Dave I meant to ask, what gap are you running on your plugs and whats your = max rpm? Steve Izett > On 14 Aug 2016, at 1:15 AM, David Leonard = wrote: >=20 > I should add that my coolant and oil run very cool, around 150 most of = the time. If yours are running near the high end of the temp range = maybe listen to Lynn... =20 >=20 > Dave Leonard >=20 > On Sat, Aug 13, 2016 at 10:11 AM, David Leonard = > = wrote: > So this will be the first time ever that I disagree with Lynn. >=20 > While there is no doubt that the plugs he recommends may be the best, = I do not use them. Those plugs are $40 each. I use the NGK BR10EIX = plugs which are iridium and almost as cool, but most importantly only = cost $10.=20 >=20 > =46rom my pocket book, good enough is good enough. While I do have = high duty cycle, I don't have the peak stresses that racers incur, even = in my turbo engine. I find that the iridium plugs last significantly = longer and as far as I can tell they are not overheating and are = producing great spark.. I tried the plugs that Lynn recommend but they = only last 20 hours or so while the iridiums last in excess of 50 hours. = So every 100 flight hours the cost difference is over $750! and I cant = tell difference in the way my engine runs. >=20 > Steve, I'm sorry that I cant solve your problem, but I am pretty sure = the problem is not the spark plugs. >=20 > Dave Leonard > Turbo Rotary RV-6 >=20 >=20 > On Fri, Aug 12, 2016 at 4:17 PM, Stephen Izett = > = wrote: > Thanks Lynn > Ill look to get these plugs. >=20 > One thing that has changed is I=E2=80=99m now reading very low to zero = coolant pressure. > Not sure if its the sender or something else. I=E2=80=99ll check it in = a few weeks then I can get back to the hangar. > If a rotary looses coolant or pressure what are the reasons this can = happening? >=20 > Steve >=20 >> On 13 Aug 2016, at 2:50 AM, Lehanover > wrote: >>=20 >> I recommend the NGK R6725-11.5 spark plug for 100% duty cycle = operation. Gapped at .010" to .012". >> =20 >> Race car settings. There you go...............rotary talk. >> =20 >> Lynn E. Hanover >> =20 >> This is what I would do. >> =20 >> Get all of your tuning done on the ground and or, just above a long = runway. Install a heated oxygen sensor, >> =20 >> Plug heat ranges in the 10s are for heavy street use. Not used (or = should not be used, my opinion) for a 100% duty cycle as in aircraft. >> =20 >> If 10s cured your problem you have already demonstrated to yourself = the problems of a too hot a (high heat range) plug. Once the tip of the = plug is overheated you have lost control of your ignition timing. This = is a very bad idea. Followed by preignition and or, detonation. >> =20 >> Both can lead to severe engine damage. Once your testing is complete = and long flights are next, I would remove and discard the stationary = gears and magnaflux the rotor gears. You can check all of the engine = parts at that time. =20 >> =20 >> The NGK R6725-11.5 plug is gifted to most competitive race teams by = Mazda. >> =20 >> Know what your timing actually is. Mark your flywheel teeth with = colored paint. Easy to see and very accurate. >> =20 >> Lynn E. Hanover >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html = >=20 >=20 >=20 --Apple-Mail=_327E0387-F6E2-403D-9F32-82F76BD31C1A Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Hi Dave
I meant to ask, what gap are you = running on your plugs and whats your max rpm?
Steve = Izett
On 14 Aug 2016, at 1:15 AM, David Leonard <flyrotary@lancaironline.net> wrote:

I should add that my coolant and oil run very cool, around = 150 most of the time.  If yours are running near the high end of = the temp range maybe listen to Lynn...   

Dave Leonard

On Sat, = Aug 13, 2016 at 10:11 AM, David Leonard <flyrotary@lancaironline.net> = wrote:
So this = will be the first time ever that I disagree with Lynn.

While there is no doubt that the plugs = he recommends may be the best, I do not use them.  Those plugs are = $40 each.  I use the NGK BR10EIX  plugs which are iridium and = almost as cool, but most importantly only cost $10.  

=46rom my pocket book, = good enough is good enough.  While I do have high duty cycle, I = don't have the peak stresses that racers incur, even in my turbo = engine.  I find that the iridium plugs last significantly longer = and as far as I can tell they are not overheating and are producing = great spark..  I tried the plugs that Lynn recommend but they only = last 20 hours or so while the iridiums last in excess of 50 hours.  = So every 100 flight hours the cost difference is over $750! and I cant = tell difference in the way my engine runs.

Steve, I'm sorry that I cant solve your = problem, but I am pretty sure the problem is not the spark = plugs.

Dave = Leonard
Turbo Rotary RV-6


On Fri, Aug 12, 2016 at 4:17 PM, Stephen Izett = <flyrotary@lancaironline.net> wrote:
Thanks Lynn
Ill = look to get these plugs.

One thing that has changed is I=E2=80=99m now reading very = low to zero coolant pressure.
Not sure if its the = sender or something else. I=E2=80=99ll check it in a few weeks then I = can get back to the hangar.
If a rotary looses = coolant or pressure what are the reasons this can happening?

Steve

On 13 Aug = 2016, at 2:50 AM, Lehanover <flyrotary@lancaironline.net> wrote:

I recommend the NGK R6725-11.5 spark plug for 100% duty = cycle=20 operation.  Gapped at .010" to .012".
 
Race car settings.       = There you=20 go...............rotary talk.
 
Lynn E. Hanover
 
This is what I would do.
 
Get all of your tuning done on the ground and or, just = above a long runway.=20 Install a heated oxygen sensor,
 
Plug heat ranges in the 10s are for heavy street use. = Not used (or should=20 not be used, my opinion) for a 100% duty cycle as in aircraft.
 
 If 10s cured your problem you have already = demonstrated to yourself=20 the problems of a too hot a (high heat range) plug. Once the tip of the = plug is=20 overheated you have lost control of your ignition timing. This is a very = bad=20 idea. Followed by preignition and or, detonation.
 
Both can lead to severe engine damage.  Once = your testing is=20 complete and long flights are next, I would remove and discard the = stationary=20 gears and magnaflux the rotor gears. You can check all of the = engine parts=20 at that time.  
 
The NGK R6725-11.5 plug is gifted to most competitive = race teams by Mazda.=20
 
Know what your timing actually is. Mark your flywheel = teeth with colored=20 paint. Easy to see and very accurate.
 
Lynn E. = Hanover
<Racerpic.jpg>--
Homepage: =  http://www.flyrotary.com/
Archive and = UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html




= --Apple-Mail=_327E0387-F6E2-403D-9F32-82F76BD31C1A--