Today's Message Index:
----------------------
1. 03:26 AM - Re: Magneto failure (Vic)
2. 04:02 AM - Re: Magneto failure (A. Dennis Savarese)
3. 05:59 AM - Re: Magneto failure (Walter Lannon)
4. 08:42 AM - Re: Magneto failure (airmanv2)
5. 08:50 AM - Re: Magneto failure (Bitterlich, Mark G CIV NAVAIR, WD)
6. 09:06 AM - Re: Magneto failure (Bitterlich, Mark G CIV NAVAIR, WD)
7. 10:33 AM - Re: Magneto failure (airmanv2)
8. 11:54 AM - Re: Re: Magneto failure (DaBear)
Message 1
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| Subject: | Re: Magneto failure |
To be precise: That P-lead is an earthing wire. If it is broken you cannot stop
the engine as the mag stays alive. But if it is broken and gets contact with
earth somewhere then the mag does misfires or worse.
Vic
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Message 2
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| Subject: | Re: Magneto failure |
Many times it is also the high voltage "stick" going into the mag cap.- T
hey may arc and thus cause the mag to appear dead.- Remove the mag cover
and the distributor cap.- Then remove the high voltage stick.- It shoul
d pull right out.- Check for possible cracks.- You may want to just rep
lace it.- The high voltage sticks in both the M14 M9F mags and Housai mag
s are interchangeable.=0ADennis=0A=0A=0A=0A=0A_____________________________
___=0A From: Walter Lannon <wlannon@shaw.ca>=0ATo: yak-list@matronics.com
=0ASent: Sunday, March 30, 2014 9:54 PM=0ASubject: Re: Yak-List: Magneto fa
w.ca>=0A=0AThat could be as simple as a broken "P" lead wire.=0APresumably
you had a good mag. check before the last take-off but if you had =0Aa fail
ing wire it could have finally separated in flight.=0ATake a good look at t
he wire going into the aft side of the mag.- If not =0Aobviously broken
do a continuity test of the complete primary circuit.=0AIf you are not full
y familiar with magneto operation I would suggest that =0Ayou contact a lic
ensed aircraft technician to help you.=0A=0AWalt=0A=0A-----Original Message
----- =0AFrom: airmanv2=0ASent: Sunday, March 30, 2014 12:58 PM=0ATo: yak-l
ist@matronics.com=0ASubject: Yak-List: Magneto failure=0A=0A--> Yak-List me
ssage posted by: "airmanv2" <bruno.blanchard2@gmail.com>=0A=0AHello ,=0AI h
ave had a problem with magnetos on French CJ6. When back after flight i =0A
checked magnetos 1+2,2,1 before shut down. When i switched on 1 the engine
=0Astop., i turn back on 2 and 1+2 , made a try at 1400 rpm than 1860, chec
k =0Aagain and on 1 it stops; So slowing down and stop the engine.=0AWhat c
ould be the problem and how to solve it?=0AThank you for help=0ABruno=0ANor
mandy=0ALFAO=0A=0A--------=0AFly safe=0A=0A=0A=0A=0ARead this topic online
here:=0A=0Ahttp://forums.matronics.com/viewtopic.php?p=421299#421299=0A
=========================0A
======================
Message 3
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| Subject: | Re: Magneto failure |
Bruno;
I gave you some very bad information yesterday. Must have had a major brain
fart!
A broken "P" lead wire will do just the opposite and will give you a
continuously live. mag.
Some items to check for your problem:
1. Contact points not opening due to excessive wear of the cam follower
rubbing block
2. Faulty connector between HT coil and the distributor.
3. HT coil failure.
Sorry for the %&@#up
Walt
-----Original Message-----
From: airmanv2
Sent: Sunday, March 30, 2014 12:58 PM
Subject: Yak-List: Magneto failure
Hello ,
I have had a problem with magnetos on French CJ6. When back after flight i
checked magnetos 1+2,2,1 before shut down. When i switched on 1 the engine
stop., i turn back on 2 and 1+2 , made a try at 1400 rpm than 1860, check
again and on 1 it stops; So slowing down and stop the engine.
What could be the problem and how to solve it?
Thank you for help
Bruno
Normandy
LFAO
--------
Fly safe
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=421299#421299
Message 4
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| Subject: | Re: Magneto failure |
Thank you for your advices, i will check what i can do and keep you informed about
the result.
Doug Have Mag available if necessary ...
Best
Bruno
--------
Fly safe
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http://forums.matronics.com/viewtopic.php?p=421370#421370
Message 5
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Walter, I am a tad bit confused by your posting. How could a broken P lead cause
the mag to stop working? If it was broken and then happened to touch GROUND,
then yes of course. However, if it was just broken? I would not think
that would cause the mag to stop working.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Walter Lannon
Sent: Sunday, March 30, 2014 10:55 PM
Subject: Re: Yak-List: Magneto failure
That could be as simple as a broken "P" lead wire.
Presumably you had a good mag. check before the last take-off but if you had a
failing wire it could have finally separated in flight.
Take a good look at the wire going into the aft side of the mag. If not
obviously broken do a continuity test of the complete primary circuit.
If you are not fully familiar with magneto operation I would suggest that you contact
a licensed aircraft technician to help you.
Walt
-----Original Message-----
From: airmanv2
Sent: Sunday, March 30, 2014 12:58 PM
Subject: Yak-List: Magneto failure
Hello ,
I have had a problem with magnetos on French CJ6. When back after flight i checked
magnetos 1+2,2,1 before shut down. When i switched on 1 the engine stop.,
i turn back on 2 and 1+2 , made a try at 1400 rpm than 1860, check again and on
1 it stops; So slowing down and stop the engine.
What could be the problem and how to solve it?
Thank you for help
Bruno
Normandy
LFAO
--------
Fly safe
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=421299#421299
Message 6
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Sorry, never mind.... I should have read Dennis's posting first.
In the "what can be wrong with the mag that is not working, I have seen the following
things cause that:
1. Bad Ignition Coupler Tube (or Cigarette as Dennis mentioned)
2. Internal gears break and mag coupler fails. You will know this simply by
pulling the mag cap off and rotating the engine.... mag will fail to rotate.
3. Breaker points had metal fatigue and points no longer were gapped anywhere
near correctly, mag fails to fire. Check points for proper gap and any cracks
in metal.
4. Bad mag coil. Very common. Usually fails at higher temperatures first. This
was mentioned by someone else as well.
5. Broken mag rotor point. Rare. Seen it happen only once. Very easy to see.
Both of my mags failed (one at a time) very close to about 700 hours of use. One
with broken gears and coupler sheared, the other with a coil. Whether the
mag is on a CJ or a YAK, it is clearly an item that should not be expected to
go 1000 hours. If anyone has one that did, I suspect you were pretty lucky.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Bitterlich, Mark G CIV NAVAIR, WD
Sent: Monday, March 31, 2014 11:11 AM
Subject: RE: Yak-List: Magneto failure
--> <mark.bitterlich@navy.mil>
Walter, I am a tad bit confused by your posting. How could a broken P lead cause
the mag to stop working? If it was broken and then happened to touch GROUND,
then yes of course. However, if it was just broken? I would not think
that would cause the mag to stop working.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Walter Lannon
Sent: Sunday, March 30, 2014 10:55 PM
Subject: Re: Yak-List: Magneto failure
That could be as simple as a broken "P" lead wire.
Presumably you had a good mag. check before the last take-off but if you had a
failing wire it could have finally separated in flight.
Take a good look at the wire going into the aft side of the mag. If not
obviously broken do a continuity test of the complete primary circuit.
If you are not fully familiar with magneto operation I would suggest that you contact
a licensed aircraft technician to help you.
Walt
-----Original Message-----
From: airmanv2
Sent: Sunday, March 30, 2014 12:58 PM
Subject: Yak-List: Magneto failure
Hello ,
I have had a problem with magnetos on French CJ6. When back after flight i checked
magnetos 1+2,2,1 before shut down. When i switched on 1 the engine stop.,
i turn back on 2 and 1+2 , made a try at 1400 rpm than 1860, check again and on
1 it stops; So slowing down and stop the engine.
What could be the problem and how to solve it?
Thank you for help
Bruno
Normandy
LFAO
--------
Fly safe
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=421299#421299
Message 7
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| Subject: | Re: Magneto failure |
I think I will need a new engine soon with low hours of work...
If one of you could know where i Can have one, export to France or UK
I think i will be ready to take it
My engine is supposed to have 2400 hours .....
Best
Bruno
--------
Fly safe
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=421376#421376
Message 8
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| Subject: | Re: Magneto failure |
Paging Richard Goode, You have a customer up front. Paging Richard
Goode....
Bear
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of airmanv2
Sent: Monday, March 31, 2014 1:33 PM
Subject: Yak-List: Re: Magneto failure
I think I will need a new engine soon with low hours of work...
If one of you could know where i Can have one, export to France or UK I
think i will be ready to take it My engine is supposed to have 2400 hours
.....
Best
Bruno
--------
Fly safe
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=421376#421376
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