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brian(at)lloyd.com
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 Posted: Mon Sep 17, 2012 4:08 pm Post subject: alternator failure CJ6 |
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On Mon, Sep 17, 2012 at 4:56 PM, Bill Geipel <czech6(at)mesanetworks.net (czech6(at)mesanetworks.net)> wrote:
| Quote: | --> Yak-List message posted by: Bill Geipel <czech6(at)mesanetworks.net (czech6(at)mesanetworks.net)>
My hair hurts just reading this!
|
I know Bill. I can feel your pain from here.
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian(at)lloyd.com (brian(at)lloyd.com)
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
[quote][b]
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mark.bitterlich(at)navy.m
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| Posted: Mon Sep 17, 2012 4:14 pm Post subject: alternator failure CJ6 |
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OK! Tact is not exactly my strong point, but I was doing my best to
exercise it.
Brian said:
"Frankly, that is a hack and not something I would do in an aircraft (or
car, or anything else I cared about) but it certainly would work. (And
some places sell zener diodes and call them "trans-sorbs".)"
This was in fact the point I was trying to make an angular approach to.
A trans-sorb can work in much the same way as a zener diode.
The part that broke was more than likely used to make the 14 volt
alternator produce 24 volts. Is this the best way to do it? No.
However, it obviously works. No, I would not do it that way if I were
designing it, and neither would Brian. But then there are a lot of
designs I don't agree with and some come from major manufacturers, so
there you go.
I am perfectly content to read Brian's description of how to do it
better, and I am also sure it will be 100% accurate.
My only purpose in getting involved again was to iron out what the part
was doing ....that broke...... which was your original question.
Best regards,
Mark
--
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mark.bitterlich(at)navy.m
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| Posted: Mon Sep 17, 2012 4:23 pm Post subject: alternator failure CJ6 |
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A proper alternator with a proper external regulator (with over-voltage
control) is indeed the ONLY thing that should be installed in an
aircraft where life and property are the driving factors.
Of course that is just my personal opinion.
Mark
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mark.bitterlich(at)navy.m
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| Posted: Mon Sep 17, 2012 4:35 pm Post subject: alternator failure CJ6 |
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And by the way, I did not mean to exclude properly designed generator
systems as well. The original Russian designed system is just fine by
me, except for the weight, lack of parts, etc. It is also sort of
complex for the uninitiated.
At this point I will insert an obvious plug for the B&C SK35 and SK50
Alternators.
They're great. Worth every cent. Use an external regulator with
over-voltage protection, and have GREAT customer service and the company
is owned by one heck of a nice guy. Not cheap. But you DO get what you
pay for.
Mark Bitterlich
--
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okanoganlew(at)gmail.com
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| Posted: Mon Sep 17, 2012 8:35 pm Post subject: alternator failure CJ6 |
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Brian, I am curious as to how you would convert to an external regulator?
On Mon, Sep 17, 2012 at 5:33 PM, Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E <mark.bitterlich(at)navy.mil (mark.bitterlich(at)navy.mil)> wrote:
[quote]--> Yak-List message posted by: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E" <mark.bitterlich(at)navy.mil (mark.bitterlich(at)navy.mil)>
And by the way, I did not mean to exclude properly designed generator
systems as well. The original Russian designed system is just fine by
me, except for the weight, lack of parts, etc. It is also sort of
complex for the uninitiated.
At this point I will insert an obvious plug for the B&C SK35 and SK50
Alternators.
They're great. Worth every cent. Use an external regulator with
over-voltage protection, and have GREAT customer service and the company
is owned by one heck of a nice guy. Not cheap. But you DO get what you
pay for.
Mark Bitterlich
--
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brian(at)lloyd.com
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| Posted: Mon Sep 17, 2012 9:33 pm Post subject: alternator failure CJ6 |
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On Mon, Sep 17, 2012 at 9:33 PM, Paul Lewis <okanoganlew(at)gmail.com (okanoganlew(at)gmail.com)> wrote:
| Quote: | Brian, I am curious as to how you would convert to an external regulator?
|
It has been several years since I have had one of these alternators open. As I recall I removed the diode trio and removed the regulator module. (Both are replaceable.) The brushes are then connected to the #1 and #2 terminals. Now the #1 and #2 terminals are direct connection to the field and that is where the external voltage regulator is connected.
As to how you then connect the new field terminals on the alternator it depends on whether your external regulator is a "high side" or "low side" regulator. A "high side" regulator controls bus current going to the field and then to ground. A "low side" regulator controls the current in the field going to ground and the other side of the field is connected to the aircraft power bus.
In the case of a "high side" regulator one of the terminals on the alternator will connect to the field output of the regulator and the other terminal on the alternator will connect to ground. If the regulator is a "low side" regulator, one field terminal on the alternator will connect to the field terminal of the regulator and the other field terminal on the alternator will connect to the bus or 'B' terminal.
The alternator can be enabled or disabled by providing an SPST switch in series with one of the field terminals, usually the one going to ground ("high side" regulator) or to the power bus ("low side" regulator). BTW, this switch is exactly how the existing generator on/off switch works and the existing generator on/off switch may be used for this purpose so all the cockpit functions remain the same.
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian(at)lloyd.com (brian(at)lloyd.com)
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
[quote][b]
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cjpilot710(at)aol.com
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| Posted: Tue Sep 18, 2012 5:01 am Post subject: alternator failure CJ6 |
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Hate to change the subject, but I believe George Mayer has passed away. No details.
Jim "Pappy" Goolsby
Sent from my iPad from some where on The 3rd rock from the Sun.
On Sep 18, 2012, at 1:30 AM, Brian Lloyd <brian(at)lloyd.com (brian(at)lloyd.com)> wrote:
[quote]On Mon, Sep 17, 2012 at 9:33 PM, Paul Lewis <okanoganlew(at)gmail.com (okanoganlew(at)gmail.com)> wrote:
| Quote: | Brian, I am curious as to how you would convert to an external regulator?
|
It has been several years since I have had one of these alternators open. As I recall I removed the diode trio and removed the regulator module. (Both are replaceable.) The brushes are then connected to the #1 and #2 terminals. Now the #1 and #2 terminals are direct connection to the field and that is where the external voltage regulator is connected.
As to how you then connect the new field terminals on the alternator it depends on whether your external regulator is a "high side" or "low side" regulator. A "high side" regulator controls bus current going to the field and then to ground. A "low side" regulator controls the current in the field going to ground and the other side of the field is connected to the aircraft power bus.
In the case of a "high side" regulator one of the terminals on the alternator will connect to the field output of the regulator and the other terminal on the alternator will connect to ground. If the regulator is a "low side" regulator, one field terminal on the alternator will connect to the field terminal of the regulator and the other field terminal on the alternator will connect to the bus or 'B' terminal.
The alternator can be enabled or disabled by providing an SPST switch in series with one of the field terminals, usually the one going to ground ("high side" regulator) or to the power bus ("low side" regulator). BTW, this switch is exactly how the existing generator on/off switch works and the existing generator on/off switch may be used for this purpose so all the cockpit functions remain the same.
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian(at)lloyd.com (brian(at)lloyd.com)
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
[b]
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czech6(at)mesanetworks.ne
Guest
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| Posted: Tue Sep 18, 2012 5:54 am Post subject: alternator failure CJ6 |
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It's on line. Straight in.
Bill
On Sep 18, 2012, at 6:58 AM, James Goolsby <cjpilot710(at)aol.com (cjpilot710(at)aol.com)> wrote:
[quote]Hate to change the subject, but I believe George Mayer has passed away. No details.
Jim "Pappy" Goolsby
Sent from my iPad from some where on The 3rd rock from the Sun.
On Sep 18, 2012, at 1:30 AM, Brian Lloyd <brian(at)lloyd.com (brian(at)lloyd.com)> wrote:
| Quote: | On Mon, Sep 17, 2012 at 9:33 PM, Paul Lewis <okanoganlew(at)gmail.com (okanoganlew(at)gmail.com)> wrote:
| Quote: | Brian, I am curious as to how you would convert to an external regulator?
|
It has been several years since I have had one of these alternators open. As I recall I removed the diode trio and removed the regulator module. (Both are replaceable.) The brushes are then connected to the #1 and #2 terminals. Now the #1 and #2 terminals are direct connection to the field and that is where the external voltage regulator is connected.
As to how you then connect the new field terminals on the alternator it depends on whether your external regulator is a "high side" or "low side" regulator. A "high side" regulator controls bus current going to the field and then to ground. A "low side" regulator controls the current in the field going to ground and the other side of the field is connected to the aircraft power bus.
In the case of a "high side" regulator one of the terminals on the alternator will connect to the field output of the regulator and the other terminal on the alternator will connect to ground. If the regulator is a "low side" regulator, one field terminal on the alternator will connect to the field terminal of the regulator and the other field terminal on the alternator will connect to the bus or 'B' terminal.
The alternator can be enabled or disabled by providing an SPST switch in series with one of the field terminals, usually the one going to ground ("high side" regulator) or to the power bus ("low side" regulator). BTW, this switch is exactly how the existing generator on/off switch works and the existing generator on/off switch may be used for this purpose so all the cockpit functions remain the same.
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian(at)lloyd.com (brian(at)lloyd.com)
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
|
[b]
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