X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from QMTA10.emeryville.ca.mail.comcast.net ([76.96.30.17] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3750383 for flyrotary@lancaironline.net; Thu, 09 Jul 2009 03:23:23 -0400 Received-SPF: none receiver=logan.com; client-ip=76.96.30.17; envelope-from=cbarber@texasattorney.net Received: from OMTA02.emeryville.ca.mail.comcast.net ([76.96.30.19]) by QMTA10.emeryville.ca.mail.comcast.net with comcast id DjJZ1c0040QkzPwAAjNoc2; Thu, 09 Jul 2009 07:22:48 +0000 Received: from [192.168.2.4] ([98.200.105.92]) by OMTA02.emeryville.ca.mail.comcast.net with comcast id DjNm1c0031zdwnW8NjNnqZ; Thu, 09 Jul 2009 07:22:47 +0000 Message-ID: <4A559AD0.4010802@TexasAttorney.net> Date: Thu, 09 Jul 2009 02:22:56 -0500 From: Christopher Barber User-Agent: Thunderbird 2.0.0.21 (Windows/20090302) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: SAG- Spark plugs 2592 or 2692? References: In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Yeah, that crossed my mind. Baring a clear and certain advantage, I likely will stick with the standard recommended plugs even though I do have a number of housings laying around. Since they are kicking us out of the hangar for a couple of months to redo the roof, if'n anyone wants the parts to several disassembled 13b and are passing through Houston, they may like a new home . They are great for research. All the best, Chris George Lendich wrote: > > Chris and Bill, > It's handy to have an old housing to screw new type plugs into > before you actually put them into the working engine. > It's then easy to see how far the plug extends by looking from the > inside of the housing. > George (down under) > So, I am guessing by this thread that it is ok to use the none > shrouded stock NKG plugs. I have not looked, but now assume that > the more standard type automotive plug fits even with it longer > electrodes extending further out. > Cpl. Christopher Barber, JD > Badge 330 > Bellaire Police Department > 5110 Jessamine > Bellaire, Texas 77401 > 713-668-0487 > 713-662-8289 fax > CBarber@BellairePolice.com > > ------------------------------------------------------------------------ > *From:* Rotary motors in aircraft on behalf of Kelly Troyer > *Sent:* Wed 7/8/2009 6:44 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] SAG- Spark plugs 2592 or 2692? > > Bill, > You are correct................You have to look up the AR2592 > plugs by part number............This plug > is actually used in some early Chevrolet and Chrysler Big block > engines for racing.......... > -- > Kelly Troyer > "Dyke Delta"_13B ROTARY Engine > "RWS"_RD1C/EC2/EM2 > "Mistral"_Backplate/Oil Manifold > > > > -------------- Original message from "Bill Bradburry" > : -------------- > > Kelly, > > I don’t see a call out for the rotary engine in the Autolite > info…??? > > Bill B > > ------------------------------------------------------------------------ > > *From:* Rotary motors in aircraft > [mailto:flyrotary@lancaironline.net] *On Behalf Of *Kelly Troyer > *Sent:* Wednesday, July 08, 2009 3:27 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] SAG- Spark plugs 2592 or 2692? > > Jeff and All, > > I believe the mystery is solved...............Apparently > "AR2692" is a typo error > > and "AR2592" is correct..............Check out the link > below............Full of info..... > > http://www.autolite.com/pdf/Autolite_HP_Apps.pdf > > > Kelly Troyer > "Dyke Delta"_13B ROTARY Engine > "RWS"_RD1C/EC2/EM2 > "Mistral"_Backplate/Oil Manifold > > > -------------- Original message from "Kelly Troyer" > : -------------- > > > Jeff, > > I have never found a trace of a "AR2692"............Lynn > which is correct ??................... > > -- > Kelly Troyer > "Dyke Delta"_13B ROTARY Engine > "RWS"_RD1C/EC2/EM2 > "Mistral"_Backplate/Oil Manifold > > > -------------- Original message from Jeff Whaley > : -------------- > > Lynn’s email referenced 2 part numbers … Poor folks > race with Autolight AR2692 and … In the picture, left > to right is the Autolight AR2592. > > So which number is it correct? 2592 or 2692? > > Jeff > > *From:* Rotary motors in aircraft > [mailto:flyrotary@lancaironline.net] *On Behalf Of > *Kelly Troyer > *Sent:* Wednesday, July 08, 2009 2:35 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] SAG- Spark plugs > > Lynn and Group, > > I checked my local "Auto Zone" and they claimed to > be unable to get the "AutoLite" > > AR2592 sparkplug...............Checked "Rock Auto" > (Link below) and they have them in > > packs of 4 for $2.69 (each plug)...........Ordered > 8 of them for $21.52 + $5.47 shipping > > but "AutoLite" has a rebate offer of $0.50 per > plug for up to 16 plugs until Nov. 30,2009 > > for copper core plugs (rebate link > below).............To find the sparkplug do a part > number > > search (AR2592) , Add the manufacturer (AutoLite) > , Then use "all" for the part group > > because if you use "Ignition" and "Sparkplug" for > part type it will say "No part found".... > > FWIW > > http://www.rockauto.com/catalog/raframecatalog.php?a=G-Store > > http://www.autolite.com/rebate/pdf/spark-plug-09.pdf > > -- > Kelly Troyer > "Dyke Delta"_13B ROTARY Engine > "RWS"_RD1C/EC2/EM2 > "Mistral"_Backplate/Oil Manifold > > -------------- Original message from Lynn > Hanover : -------------- > > In a message dated 7/7/2009 3:22:56 P.M. > Pacific Daylight Time, > bbradburry@bellsouth.net > writes: > > Steve, > I hope Lynn chimes in here. He has seen a > lot of plugs under a lot of > conditions. They look pitted to me. There > seems nothing wrong with your > conditions. The only thing on the list > would be too lean.?? > Someone is out there writing up a great > response right now! :>) > Bill B > > That plug has been too hot. > > Stock Mazda plugs are rather cold in heat > range by way of the guards around the shell. > The electrode runs a bit hotter than normal. > Plug heat ranges are determined by how far > down the shell the porcelain touches. The > longer the heat path, the hotter the plug. > > Using car plugs in the aircraft application > seems to be asking for trouble. In the car on > the freeway you use 2,600 RPM and 1/2 > throttle, maybe 24 to 28 HP. Not much of a > challenge for a spark plug. But there is the > > driver who will jump into his 95 twin turbo in > LA and run out to LasVegas at full tilt and > expect to still have an engine when he gets > there. And usually he does. So, if I was to > use a street plug in an aircraft, I would use > the 93-95 twin turbo plug, whatever that is. > > The aircraft application, less the 100LL fuel > problem, is clearly a cold racing plug with a > conventional gap or close to it. > > Years ago when we started racing rotaries, > Champion said to use the N-57G Fine wire > center with gold paladium plating and a > conventional ground strap. About 20% of the > center wire is exposed in an end view. > > The N-57G and similar are discontinued and the > N-82 series replaced it. The shell is thinner > and the porcelain is wider. Same fine wire > center, no gold anything. 20% of the wire > exposed in an end view. > > Both worked fine even with points and a > Kettering coil. > > Poor folks race with Autolight AR2692 end > style and small porcelain just like the N-57G. > Full size center wire, conventional strap, but > 100% of the center wire is exposed in an end > view. Actually used by NASCAR and the local > circle track people, and stocked by Autozone > and others. About $5.00 a box of 4. They work > fine. I raced them one weekend, no problems, > but we were getting the NGK plugs for free so > I stuck with them. > > The NGKR6725-115 stamped on the body actually > means that the heat range is 11.5 not 115. > $25.00 each. > > 50% of the center wire exposed in an end view. > Free for some Rotary engined competitors. > Retracted gap (the whole thing is inside the > shell. Fine wire center and fine wire ground > strap. Ice cold. Long body so it is easy to > install and remove in the rotary. > > I grind off those eyebrow things above the > plug holes so I can use any plug I like. And > any 5/8" plug just goes in so easy. Most heat > ranges are available in the 5/8" shells. > > Rotaries do not like high heat range plugs. > The housings crack across the leading plug > hole. Over time a complete set of radial > cracks form. > > In the picture, left to right is the Autolight > AR2592, Champion N-82, NGK R6725-115, and > Champion > > N-57G. > > Lynn E. Hanover > > > Warning: This e-mail transmission, and any documents, files or > previous e-mails attached to it, may contain confidential > information that is legally privileged. If you are not the > intended recipient or the person responsible for delivering it to > the intended recipient, you are hereby notified that any > disclosure, copying, distribution or use of any of the information > contained in or attached to this transmission is STRICTLY > PROHIBITED. If you have received this transmission in error, > please immediately notify us by telephone at 713-662-8132 and > destroy the original transmission and its attachments without > reading them. Thank you. >