Today's Message Index:
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1. 09:37 AM - Office will be closed (doug sapp)
2. 10:17 AM - Re: [Non-DoD Source] Magneto failure CD-5 (Bitterlich, Mark G CIV NAVAIR, WD)
3. 10:30 AM - Re: Office will be closed (Walter Lannon)
4. 10:41 AM - Re: Office will be closed (Mark Pennington)
5. 10:51 AM - Re: Office will be closed (Larry Pine)
6. 12:11 PM - Re: Office will be closed (JON)
Message 1
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| Subject: | Office will be closed |
Listers and Lurkers it's time for a short break,
Our office will be closed 12:00 noon Aug 16 through Aug 22.
If you would like to join us you can find us at:
https://www.bergair.com/solareclipse Gogle "eclipse festival" for more
info.
Best,
Doug
Message 2
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| Subject: | Magneto failure CD-5 |
The only thought that comes to mind is that with the rotor totally loose on Mag
1, and you indicate ALL THREE SCREWS WERE LOOSE, then it is likely that the rotor
contact arm, and the metal tabs on the cap were damaged in the process.
When you tightened it down again the rotor point is not making good contact with
the mag distributor cap. This would explain why it worked before and stopped
working after you messed with it. I am also assuming you aligned the rotor
properly when you tightened it down, which it clearly was NOT when it was loose.
But there is a CHANCE that this gets even worse. When you took the mag apart and
replaced the coil, there is a chance that you put it in incorrectly, that it
was a bad coil, that something is not aligned correctly, etc. I am guessing
that you noticed how easily it turns after you took it completely apart.
On the other hand, if before you did anything at all, you simply replaced the cigarette
and THEN spun it, with no other changes made, and it THEN spun very easily....
then I have no idea. So there is a requirement to know the exact sequence
of what you did, and what checks you made to point a likely finger at
the cause, but I strongly suspect that ORIGINALLY when you tightened down the
rotor, you caused it to no longer make contact with the cap tabs and it stopped
working because when it was loose, it was banging away at the contacts and they
changed their orientation.
And all of that is actually a wild ass guess (WAG).
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of glipaz
Sent: Saturday, July 08, 2017 1:48 PM
Subject: [Non-DoD Source] Yak-List: Magneto failure CD-5
Conundrum:
At runup, Mag 2 failed (engine turned off). Engine ran smoothly on Mag 1. Returned
to chocks and opened Mag 2 to discover a broken points spring. Obvious
hard break. Replaced points and opened Mag 1 to inspect. Discovered that
the rotor on Mag 1 was completely loose (all three bolts were loose). Tightened
rotor on Mag 1, closed both mags and fired it up. Started easily. Mag
2 now worked fine but now Mag 1 failed. What?!
Thought it might be a switch problem. Tested Mag switch to make sure it was not
a wiring short to ground and it checked ok. Back to the Mag.
Inspected rotor and cap. Ok. Checked points. Open fine. Replaced cigarette.
Still wouldn't fire. Replaced coil. Still wouldn't fire. Finally replaced
Mag. Motor fired and tested fine on both mags. Runup Mag check normal.
Note: we turned the bad Mag 1 by hand and could not get a spark out of the cigarette
and the Mag turned fairly freely, without the normal flopping that the magnets
provide.
The mystery is this: assuming Mag 1 was fine and Mag 2 had a hard break prior
to shutdown (prior Mag checks on Mag 1 were fine) how did it fail after tightening
down the rotor? Why is it now producing no spark and seems to have lost
its magnetism? Prior to this both Mags worked fine on previous runups and flights.
Gil Lipaz
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=470795#470795
Message 3
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| Subject: | Re: Office will be closed |
Hey Doug;
Have a great time
I see that is the =9CGreat American Solar Eclipse=9D. Must ha
ve been arranged by Pres. Trump!
Cheers;
Walt
From: doug sapp
Sent: Monday, July 10, 2017 9:34 AM
Subject: Yak-List: Office will be closed
Listers and Lurkers it's time for a short break,
Our office will be closed 12:00 noon Aug 16 through Aug 22.
If you would like to join us you can find us at:
https://www.bergair.com/solareclipse Gogle "eclipse festival" for more in
fo.
Best,
Doug
---
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Message 4
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| Subject: | Re: Office will be closed |
Doug
Have a great time in watching the eclipse. I wish I could get away to see
that.
I have an idea. Take some photos for us here on the list. Get it centered
in your camera and look dead on and get good photos.
We would appreciate the effort. HA
Thanks for all of your help, enjoy your break
Mark
On Mon, Jul 10, 2017 at 12:34 PM, doug sapp <dougsappllc@gmail.com> wrote:
> Listers and Lurkers it's time for a short break,
>
> Our office will be closed 12:00 noon Aug 16 through Aug 22.
>
> If you would like to join us you can find us at:
> https://www.bergair.com/solareclipse Gogle "eclipse festival" for more
> info.
>
> Best,
> Doug
>
Message 5
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| Subject: | Re: Office will be closed |
Perhaps I will !!!=C2-Larry Pine
From: doug sapp <dougsappllc@gmail.com>
To: yak-list@matronics.com
Sent: Monday, July 10, 2017 9:44 AM
Subject: Yak-List: Office will be closed
Listers and Lurkers it's time for a short break,
Our office will be closed 12:00 noon Aug 16 through Aug 22.
If you would like to join us you can find us at:https://www.bergair.com/sol
areclipse =C2- Gogle "eclipse festival" for more info.
Best,Doug
Message 6
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| Subject: | Re: Office will be closed |
Here ya go Doug...=C2-
----- Original Message -----
From: "doug sapp" <dougsappllc@gmail.com>
Sent: Monday, July 10, 2017 11:34:02 AM
Subject: Yak-List: Office will be closed
Listers and Lurkers it's time for a short break,
Our office will be closed 12:00 noon Aug 16 through Aug 22.
If you would like to join us you can find us at:
https://www.bergair.com/solareclipse =C2- Gogle "eclipse festival" for mo
re info.
Best,
Doug
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