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wild.blue(at)verizon.net
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 Posted: Mon Sep 27, 2010 1:11 pm Post subject: Shut down |
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Gents--
I can tell you from sad, time consuming and expensive experience that if you
shut off the alternator/generator/master before the engine stops in your
Nanchang you run a very high risk of torching your voltage regulator. The
old vibrator style regulators will stand it, and maybe your avionics, too,
but the newer solid-state regulators will blow up immediately. Not "maybe,"
but absolutely, positively, you will burn it up, guaranteed. Do not "cycle"
the generator with the engine running, either, results ditto. Treat your
Yak or Nanchang just like that Cessna you learned to fly in: Electrical
loads off first (avionics, lights etc.) then kill the engine (mags).
Finally and only then, shut off the generator and master. You will save
yourself a great deal of trouble and expense. So far as I know this applies
to Yaks, too, and, no, I'm not going to "experiment" to test the hypothesis.
Slow, yes. Stupid, maybe. But once is enough.
Jerry Painter
Wild Blue Aviation
www.FlyWBA.com
JP(at)FlyWBA.com
425-876-0865
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mark.bitterlich(at)navy.m
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| Posted: Mon Sep 27, 2010 4:11 pm Post subject: Shut down |
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Jerry,
The suggestions was to shut off the Avionics Master, not the generator or alternator control.
Mark
p.s. On the YAK models, the generator master switch controls the output to the field winding.
________________________________
From: owner-yak-list-server(at)matronics.com on behalf of Jerry Painter
Sent: Mon 9/27/2010 5:04 PM
To: yak-list(at)matronics.com
Subject: Shut down
Gents--
I can tell you from sad, time consuming and expensive experience that if you
shut off the alternator/generator/master before the engine stops in your
Nanchang you run a very high risk of torching your voltage regulator. The
old vibrator style regulators will stand it, and maybe your avionics, too,
but the newer solid-state regulators will blow up immediately. Not "maybe,"
but absolutely, positively, you will burn it up, guaranteed. Do not "cycle"
the generator with the engine running, either, results ditto. Treat your
Yak or Nanchang just like that Cessna you learned to fly in: Electrical
loads off first (avionics, lights etc.) then kill the engine (mags).
Finally and only then, shut off the generator and master. You will save
yourself a great deal of trouble and expense. So far as I know this applies
to Yaks, too, and, no, I'm not going to "experiment" to test the hypothesis.
Slow, yes. Stupid, maybe. But once is enough.
Jerry Painter
Wild Blue Aviation
www.FlyWBA.com
JP(at)FlyWBA.com
425-876-0865
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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