---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Thu 08/06/09: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:12 AM - Re: YAK 11 ? (barryhancock) 2. 11:16 AM - Automotive Plug Alert (Craig Payne) 3. 02:56 PM - Re: Automotive Plug Alert (Yak Pilot) 4. 02:58 PM - Immigrants (Jerry Painter) 5. 05:46 PM - Re: Immigrants (T A LEWIS) 6. 06:44 PM - Re: Automotive Plug Alert (N395V) 7. 07:13 PM - Re: Automotive Plug Alert (Roger Kemp M.D.) ________________________________ Message 1 _____________________________________ Time: 07:12:39 AM PST US Subject: Yak-List: Re: YAK 11 ? From: "barryhancock" Mark Jefferies in the UK is probably the best source for this information. Good luck! -------- Barry Hancock Worldwide Warbirds, Inc. www.worldwidewarbirds.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=256330#256330 ________________________________ Message 2 _____________________________________ Time: 11:16:04 AM PST US From: "Craig Payne" Subject: Yak-List: Automotive Plug Alert When using automotive plugs in either the Huosai or M-14 type engines, you MUST use the resistor type plugs as the non-resistive type may conduct an excess amount of current, overheating the magneto coils, leading to rough mag operation. While discussing teething problems in the latest modified M-14P engine with a fellow RedStar, I realized that I had encountered the same problem 3 years ago but never quite made the connection to overheating of the coils. My situtation caused me to assume bad mags. After working my way through the pile of mags I have, I lost track of my troubleshooting thread and switched spark plugs to the NGK BRxHS motorcycle plug and my problems went away. While I wasn't sure what caused the problem to go away, I shelved the mags and haven't changed much since. My problem showed up after 10-20 minutes of operation but in another airplane the problem occurred just about 50 minutes into the flight. Currently I have moved from the #6 plug to the hotter #5 plug to better match the way I operate at the Cruise II setting. For higher power settings, I would go back to the BR6HS. Now I'll go back through the pile of mags and test a bit when I get the chance. Craig Payne cpayne@joimail.com ________________________________ Message 3 _____________________________________ Time: 02:56:47 PM PST US From: Yak Pilot Subject: Re: Yak-List: Automotive Plug Alert Can you please explain how you arrived at this conclusion Craig?- I under stand about the problem.- I understand that you were comparing resistive to non-resistive plugs.- Using the term: "YOU MUST USE RESISTIVE PLUGS" i s pretty strong.- I'll talk to you about it off line.- Rog?- - Later, - Mark Bitterlich --- On Thu, 8/6/09, Craig Payne wrote: From: Craig Payne Subject: Yak-List: Automotive Plug Alert When using automotive plugs in either the Huosai or M-14 type engines, you MUST use the resistor type plugs as the non-resistive type may conduct an e xcess amount of current, overheating the magneto coils, leading to rough ma g operation. - While discussing teething problems in the latest modified M-14P engine with a fellow RedStar, I realized that I had encountered the same problem 3 yea rs ago but never quite made the connection to overheating of the coils. My situtation caused me to assume bad mags. After working my way through the p ile of mags I have, I lost track of my troubleshooting thread and switched spark plugs to the NGK BRxHS motorcycle plug and my problems went away. Whi le I wasn't sure what caused the problem to go away, I shelved the mags and haven't changed much since. - My problem showed up after 10-20 minutes of operation but in another airpla ne the problem occurred just about 50 minutes into the flight. Currently I have moved from the #6 plug to the hotter #5 plug to better match the way I operate at the Cruise II setting. For higher power settings, I would go ba ck to the BR6HS. - Now I'll go back through the pile of mags-and test a bit when I get the c hance. - Craig Payne cpayne@joimail.com - - ________________________________ Message 4 _____________________________________ Time: 02:58:12 PM PST US From: "Jerry Painter" Subject: Yak-List: Immigrants Pappy-- Sorry, Jim, but you are simply mistaken. Yes, there is a longer answer, but that's the short of it. You wouldn't be descended from immigrants (like so many of us) would you? Rush is full of BS. JP ________________________________ Message 5 _____________________________________ Time: 05:46:11 PM PST US From: T A LEWIS Subject: Re: Yak-List: Immigrants Jerry, I thinkJim was referring to ILLEGAL imigrants. Get it ! I'm notgoing topay my hard earned dollars for ILLEGAL aliens health care or anything elsethey need. Rush is on top of the problem and has my 100% support. Terry Lewis ----- Original Message ---- From: Jerry Painter Sent: Thursday, August 6, 2009 5:56:55 PM Subject: Yak-List: Immigrants Pappy-- Sorry, Jim, but you are simply mistaken. Yes, there is a longer answer, but that's the short of it. You wouldn't be descended from immigrants (like so many of us) would you? Rush is full of BS. JP ________________________________ Message 6 _____________________________________ Time: 06:44:55 PM PST US Subject: Yak-List: Re: Automotive Plug Alert From: "N395V" How about discussing it online so the rest of us can benefit from the discussion? -------- Milt 2003 F1 Rocket 2006 Radial Rocket Read this topic online here: http://forums.matronics.com/viewtopic.php?p=256447#256447 ________________________________ Message 7 _____________________________________ Time: 07:13:25 PM PST US From: "Roger Kemp M.D." Subject: RE: Yak-List: Automotive Plug Alert Craig, I have had the same problem with Ru and Chinese plugs in the 52 with its' M-14. It was a bad capacitor in the Mag Coil. Replacing the coil solved the problem. It occurs 20 min into the flight with an abrupt Kaahoop and the blade stops a tick due to the misfire. You can almost set your clock to the heart stopping misfire. I think you fixed your problem by swapping out your mags with the bad coil. You hit the nail on the head with your thoughts about over heating the coils but I seriously doubt it was the plugs that did that. I have the NGK plugs in my 50 without the problem to date. I have had the problem in the 50 also with a bad coil causing a discharge with the ensuing misfire. That occurred with the existing Chinese plugs not the new NGK's. I changed the wires and plugs a little later when I blew out a couple the Chinese plugs (the ceramic core cracked and the plugs broke down). So I changed the plugs to the NGK's and did the plug wire conversion. That led to a different problem with RF interference. That is another story for another setting. Doc From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Yak Pilot Sent: Thursday, August 06, 2009 4:56 PM Subject: Re: Yak-List: Automotive Plug Alert Can you please explain how you arrived at this conclusion Craig? I understand about the problem. I understand that you were comparing resistive to non-resistive plugs. Using the term: "YOU MUST USE RESISTIVE PLUGS" is pretty strong. I'll talk to you about it off line. Rog? Later, Mark Bitterlich --- On Thu, 8/6/09, Craig Payne wrote: From: Craig Payne Subject: Yak-List: Automotive Plug Alert When using automotive plugs in either the Huosai or M-14 type engines, you MUST use the resistor type plugs as the non-resistive type may conduct an excess amount of current, overheating the magneto coils, leading to rough mag operation. While discussing teething problems in the latest modified M-14P engine with a fellow RedStar, I realized that I had encountered the same problem 3 years ago but never quite made the connection to overheating of the coils. My situtation caused me to assume bad mags. After working my way through the pile of mags I have, I lost track of my troubleshooting thread and switched spark plugs to the NGK BRxHS motorcycle plug and my problems went away. While I wasn't sure what caused the problem to go away, I shelved the mags and haven't changed much since. My problem showed up after 10-20 minutes of operation but in another airplane the problem occurred just about 50 minutes into the flight. Currently I have moved from the #6 plug to the hotter #5 plug to better match the way I operate at the Cruise II setting. For higher power settings, I would go back to the BR6HS. Now I'll go back through the pile of mags and test a bit when I get the chance. Craig Payne cpayne@joimail.com =nofollow target=_blank>http://www.matronics.com/Navigator?Yak-List et=_blank>http://forums.matronics.com llow target=_blank>http://www.matronics.com/contribution ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/yak-list Browse Digests http://www.matronics.com/digest/yak-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.