Today's Message Index:
----------------------
1. 02:10 AM - ANL Fuse Rating (user9253)
2. 11:27 AM - Re: B and C SD-8 dynamo problem (Gautier, Thomas N (3262))
3. 01:28 PM - Re: ANL Fuse Rating (Robert L. Nuckolls, III)
4. 02:03 PM - Re: ANL Fuse Rating (user9253)
5. 02:44 PM - Re: Warm Extension Cord (Art Zemon)
6. 03:12 PM - Re: Warm Extension Cord (Art Zemon)
7. 03:17 PM - Charlotte, NC Seminar (Robert L. Nuckolls, III)
Message 1
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I have a 70 amp alternator and have a D180 with the dynon shunt. I also have a
ANL-60 protecting the layout....should I replace that with a ANL-80?
Thanks
Don
The above was posted on VansAirforce by Don. I replied that 60 amp ANL should
work fine. But decided to post it on the AeroElectric list to get more qualified
opinions.
http://www.mouser.com/ds/2/87/Bus_Ele_DS_2024_ANL-348888.pdf
Joe
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=456350#456350
Message 2
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| Subject: | Re: B and C SD-8 dynamo problem |
Bob and everyone,
Thanks for the replies.
I was aware that the dynamo regulator might not come alive without
power on its output, but I thought that was what the
bridge-rectifier/3K-resistor come-alive circuit in Z-13/8 Rev Q was for. I
can=B9t say that I understand just how that circuit works with the regulato
r
module but it reminds me of an old vacuum tube grid leak bias circuit.
That=B9s why I thought the voltage (about -13vdc) at the junction of the
resistor and rectifier would be useful.
I will test a more complete version of my electrical system with the
main battery attached and see if things work better. The best I can do is
3100 rpm for the dynamo but we=B9ll see how that works. I=B9ll report my
results. I have attached a composite picture of the test set up for those
of you who are interested. The guys at BandC said driving the dynamo from
the outside end wouldn=B9t hurt it. The big sheet of aluminum is my stand-i
n
heat sink for the instrument sub-panel in the plane.
Bob, do you have any idea how soon an improved version of the regulator
might be available?
Regards,
Nick Gautier
>
>Time: 10:06:58 AM PST US
>From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
>Subject: Re: AeroElectric-List: B and C SD-8 dynamo problem
>
>
>> I am in the process of wringing out my circuit construction to find
>>the
>>problem but I would like your advice on a couple of issues. 1) Can you
>>suggest a definitive test of the voltage regulator module isolated from
>>the rest of the circuit? And 2) Can I test the control circuit without
>>the
>>dynamo, perhaps with a DC supply for input power? If I can test it with
>>DC
>>what voltage should I use? I imagine 16 or 17 volts would be right for
>>full 8A load. Would higher voltage be useful for lighter loads? I would
>>like to stress test my heat sinking arrangement for an hour or two but I
>>don=B9t really like the idea of running the dynamo with the drill press
>>for
>>that long. Also I=B9d like to get the dynamo mounted on the engine.
>
> Not all rectifier/regulators will come alive without
> having voltage at "both ends" . . . i.e. both
> input and output. They need a battery on line
> to wake up.
>
> The stock SD-8 R/R is thermally marginal. It will
> be replaced with a more robust device shortly.
> I'm assembling a drive stand to do detailed
> energy studies on a range of R/R options for
> all of the B&C PM alternators. Kind of swamped
> right now with EMT classes but the drive stand
> is about ready to run.
>
>
>Emacs!
>
>
> Please don't take this as any discouragement
> for gathering your own data. I'd be pleased
> to know your findings. 2400 RPM is a bit slow,
> the SD-8 doesn't reach full rated output
> below 3900 or so. Getting a grip on those
> critters to spin them is a bit of a hassle.
> Neal George fixed me up with some OEM mating
> parts for the spline. I did find that a 12-point,
> socket (11/16?) fits the male spline pretty
> well. I have an adapter fabricated from a
> socket that I elected not to use for permanent
> tooling. You're welcome to it if it's useful
> to you.
>
> In any case, I suggest you mock up a complete
> alternator-battery-load system. It should
> come alive and work for you then.
>
>
> Bob . . .
>
Message 3
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| Subject: | Re: ANL Fuse Rating |
At 04:09 AM 5/18/2016, you wrote:
>
>I have a 70 amp alternator and have a D180 with the dynon shunt. I
>also have a ANL-60 protecting the layout....should I replace that
>with a ANL-80?
>Thanks
No, 60A will be fine. As you can see below,
even an ANL50 would not be severely stressed by
a 70A alternator . . .
Emacs!
Bob . . .
Message 4
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| Subject: | Re: ANL Fuse Rating |
Thanks Bob
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=456362#456362
Message 5
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| Subject: | Re: Warm Extension Cord |
Whoa! I posted a question, went away for a few days of R&R, and I come back
to a torrent of conversation! :-)
I guess I'll be reading for awhile.
-- Art Z.
--
http://CheerfulCurmudgeon.com/ <http://cheerfulcurmudgeon.com/>
*"If I am not for myself, who is for me? And if I am only for myself, what
am I? And if not now, when?" Hillel*
Message 6
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| Subject: | Re: Warm Extension Cord |
After reading all of the replies, I have learned that extension cords,
under load, can *safely* get warm to the touch. Interesting. That does
reassure me that my cord is not dangerous, since it is only warm (not hot).
It's only 25 feet long so it is never coiled up. The places where I use it
are 10-15 feet away from where I need power.
I had forgotten about the need for circulating air to cool the wires. The
EVSE (charger) does have a built-in facility for coiling/storing the excess
cable. Now that it is getting to be summer, I will make a habit of always
uncoiling the whole cable. It wasn't an issue it the winter but... St.
Louis summer heat + sunshine + electrical current is beyond my comfort zone.
Cheers,
-- Art Z.
--
http://CheerfulCurmudgeon.com/ <http://cheerfulcurmudgeon.com/>
*"If I am not for myself, who is for me? And if I am only for myself, what
am I? And if not now, when?" Hillel*
Message 7
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| Subject: | Charlotte, NC Seminar |
DR. Dee and I are going to gyp half of
EMT class tonite and peddle up to Wichita
with a small expectation of getting a few
hours sleep before launching out of ICT
in the morning.
I'll probably be off-list for the duration.
We get back Sunday but I've got meetings
in Wichita Monday and class again Monday
nite . . . so I'll probably have my head
down until Tuesday.
Looking forward to communing with the brothers
in NC.
Bob . . .
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