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
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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
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| Subject: | 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
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| Subject: | Re: 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 <cpayne@joimail.com> wrote:
From: Craig Payne <cpayne@joimail.com>
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
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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
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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 <wild.blue@verizon.net>
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
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| Subject: | Re: Automotive Plug Alert |
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
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| Subject: | 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 <cpayne@joimail.com> wrote:
From: Craig Payne <cpayne@joimail.com>
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
<http://us.mc507.mail.yahoo.com/mc/compose?to=cpayne@joimail.com>
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