Today's Message Index:
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1. 06:49 AM - Re: Lamar voltage regulator and overvoltage relay questions (user9253)
2. 10:02 AM - Re: Lamar voltage regulator and overvoltage relay questions (N1921R)
3. 11:49 AM - Failure Tolerant Architectures (Robert L. Nuckolls, III)
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| Subject: | Re: Lamar voltage regulator and overvoltage relay questions |
Found this via google search:
https://www.bonanza.org/globalassets/aircraft/service-instructions/si-1062---electrical-power---installation-of-an-overvoltage-relay-for-the-60-amp-alternator-system.pdf
So evidently the relay opens the circuit to the voltage regulator if the electrical
system voltage is too high.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=513556#513556
Attachments:
http://forums.matronics.com//files/ov_relay_715.png
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| Subject: | Re: Lamar voltage regulator and overvoltage relay questions |
Thanks Joe,
It seems to me:
The OP can use a "Ford" VR166 voltage regulator.
The overvoltage field interrupter relay is from a former time before overvoltage
crowbars.
The subject VAF thread is at: https://vansairforce.net/threads/alternator-field-voltage.226640/
--------
John Bright, RV-6A N1921R, working on FWF.
Single battery, alternator on main bus, Monkworkz generator on engine/essential
bus.
My links <a href="https://docs.google.com/document/d/1YOtPiA3AdUsQEYR4nodBESNAo21rxdnx4pFs7VxXfuI/edit?pli=1">here</a>
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=513557#513557
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| Subject: | Failure Tolerant Architectures |
At 12:09 PM 5/3/2024, you wrote:
><bobmeyers@meyersfamily.org>
>
>BoB, Quoting from your post...
>
>"I'm increasingly of the opinion that Z-101 should be the ONLY
>z-figure in any 'upgrade' to the connection"
>
>While I like the concepts in Z-101 I'm not sold on this being the only idea.
Of course, there are LOTS of ideas . . . the vast
majority of which have been demonstrated over
the past century in millions of general aviation
light aircraft. I'm aware of none that left the factories
at Beech, Mooney, Cessna or Piper with two
batteries.
> There has
>been a number of posts about incorporating a back up battery in its
>architecture
>which seems counter productive.
Not sure what posts you're referring to.
Yes, some of the z-figures do show how to
add-a-battery . . . some of them decades
old.
In the OBAM aviation environment we were able
to explore a lot of options with some notion
of improving on a design . . . we learned a lot
over the years . . . including how to
conduct failure modes effects analysis:
(1) Assuming your battery has been sized and
maintained to meet YOUR battery-only
performance requirements, under what conditions
would you suffer a loss-of-battery emergency
. . . i.e. panel goes dark, engine stops . . .?
(2) Assume you're cruising along at altitude
watching the ground go by, what kind of battery
failure would produce an event that
got your attention? What would be the nature
of that event?
Bob . . .
////
(o o)
===========o00o=(_)=o00o========
< Go ahead, make my day . . . >
< show me where I'm wrong. >
================================
In the interest of creative evolution
for the-best-we-know-how-to-do based
on physics and repeatable experiment.
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