Today's Message Index:
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1. 05:43 AM - Not receiving e-mail (Bobby Paulk)
2. 07:38 AM - Re: One battery/two alternators IFR z-diagram (johnbright)
3. 07:56 AM - Re: E-Mail Digest Not Working (rsmith52)
4. 09:36 AM - Re: Not receiving e-mail (Eric Page)
5. 01:07 PM - Re: Re: One battery/two alternators IFR z-diagram (Robert L. Nuckolls, III)
Message 1
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| Subject: | Not receiving e-mail |
I have spent several hours on Comcast to find out why I am not receiving my emails
from Matronics. I have had case numbers and talked to supervisors. Finally
one said it was the sender but Matt said to open a Gmail account and since then
I have not had a problem with it. I still get a random email thru Comcast
but nothing regular. I would like to have it all on one server but I don't know
if that is going to be possible.
Message 2
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| Subject: | Re: One battery/two alternators IFR z-diagram |
nuckolls.bob(at)aeroelect wrote:
> At 08:26 PM 12/18/2019, you wrote:
>
> > After doing some reading on the FAQ list, it looks like I should consider the
Z-13/8 with the Z-25 excitation mod, or else the Z-14. I think I also now understand
one of the drawbacks of Z-12 architecture is if the battery contactor
fails, both alternators go offline.
> >
> > Michael-
>
>
> That's generally not true with modern alternators . . .
> and only a few of the legacy alternators.
>
> It's true that many alternators will not come
> online without a battery present . . .but once
> running, they'll hum along oblivious to battery
> being there or not.
>
> With HEAVY inrush loads like klieg-lights in the
> wings or hydraulic pump motors. It was theoretically
> possible to stall an alternator . . .from which
> recovery would be impossible unless a battery were
> present.
> .
> .
> .
>
> Bob . . .
Hi Bob... question... need there be a load on a wound field alternator for it to
continue working in case of battery disconnect?
--------
John Bright, RV-6A, at FWF, O-360, dual SDSEFI EM-5-F
<a href="https://drive.google.com/drive/folders/1u6GeZo6pmBWsKykLNVQMvu4o1VEVyP4K">Dual
Batt Dual Alt RV-6A SDS dual EM-5-F</a>
john_s_bright@yahoo.com, Newport News, Va
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=494198#494198
Message 3
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| Subject: | Re: E-Mail Digest Not Working |
Right now I am receiving the E-mail digests. It has been interrupted in the past
for up to a couple weeks.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=494199#494199
Message 4
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| Subject: | Re: Not receiving e-mail |
I frequently get two copies of emails from the forum, and I know Yahoo isn
=99t creating duplicates of only Matronics emails but no others. Sometim
es the duplicates are separated by minutes, sometimes by hours and occasiona
lly by a day.
I also get lots of Matronics emails filtered into the spam folder (I get ind
ividual emails, not the digest), so I have to check that often. This could b
e fixed by a white-list filter if Matt would set the software to send from a
single Matronics address but instead, the echo routine spoofs each sender
=99s address, making spam filtering much harder for the recipient=99
s host.
I=99ve just been chalking it all up to the archaic forum software Matt
uses to operate the Matronics empire. I don=99t know why he hasn
=99t upgraded to a modern forum package but as long as he keeps running it o
n donations, it=99s hard to complain.
Eric
> On Jan 8, 2020, at 5:41 AM, Bobby Paulk wrote:
> I have spent several hours on Comcast to find out why I am not receiving m
y emails from Matronics. I have had case numbers and talked to supervisors.
Finally one said it was the sender but Matt said to open a Gmail account and
since then I have not had a problem with it. I still get a random email th
ru Comcast but nothing regular. I would like to have it all on one server bu
t I don't know if that is going to be possible.
Message 5
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| Subject: | Re: One battery/two alternators IFR z-diagram |
>
>Hi Bob... question... need there be a load on a wound field
>alternator for it to continue working in case of battery disconnect?
No . . . you can 'stall' a free-running
alternator by hitting it with a big load,
generally larger than it's nameplate rating.
If you have and electro-hydraulic gear, then
inrush on the PM pump motor may well cause
a self-excited alternator to go down . . .
but if you remove most if not all loads, they'll
generally self excite and come back on line
whereupon you can turn some things back on.
Folks used to be fond of dual, 150 watt landing
lights . . . turning both of these puppies on at
the same time might take down an alternator that's
not supported by a battery.
With the advent of led lighting and the relative
rarity of retractable gear airplanes, those
antagonists are mostly ghosts of yesteryear.
Depending on the regulator design, most
alternators will come on line in an orderly
fashion with small or no loads . . . they
will run in a civilized manner as long as
you don't hammer them with a 'start up
transient' that exceeds nameplate rating.
Bob . . .
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