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nuckolls.bob(at)aeroelect
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 Posted: Sat Feb 10, 2024 6:06 am Post subject: OVM-14 MkIII |
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At 12:23 AM 2/10/2024, you wrote:
| Quote: | Hello Bob,
Are you looking for testers for the prototypes? |
I've had numerous volunteers to be
'beta testers' of the new ovm.
Performance testing will be carried
out in my shop with respect to confirming
'the numbers' and stability of those
numbers under temperature extremes.
Field tests will explore possible
vulnerability to un-anticipated
conditions in functional dc power
systems.
They won't even need to be actively
guarding against failure of a regulator/
alternator installation.
I'll install 'em on two of my own
vehicles to simply 'watch the bus
thru a 5A breaker'. With the
ovm in the cabin and by means of
the functional verification feature,
I can exercise the critters every
time the engine is started . . .
while watching for vulnerabilities
to noise in the 'normal' mode.
So yeah, I'd be interested in having
a few of these little guys similarly
exercised in more vehicles.
Once we're reasonably satisfied
with this field qualification experiment,
'test articles' will remain property
of the tester to be installed in
their project as needed.
By using cars for the field test platforms,
we'll be able to secure a lot more
information than if first articles
went directly to airplanes.
Bob . . .
////
(o o)
===========o00o=(_)=o00o=========
< Go ahead, make my day . . . >
< show me where I'm wrong. >
=================================
In the interest of creative evolution
of the-best-we-know-how-to-do based
on physics and good practice.
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Ceengland
Joined: 11 Oct 2020
Posts: 381
Location: MS
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cluros(at)gmail.com
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| Posted: Sat Feb 10, 2024 10:02 am Post subject: OVM-14 MkIII |
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You have one more volunteer. We can wire it to our club’s car and then once you are satisfied we have a Zenith Cruzer with Ford regulator and Dynon engine monitor we can wire it into. I have a 5A Klixon I can donate to the project  .
| Quote: | On Feb 10, 2024, at 08:20, Charlie England <ceengland7(at)gmail.com> wrote:

| Quote: | snipped
By using cars for the field test platforms,
we'll be able to secure a lot more
information than if first articles
went directly to airplanes.
Bob . . .
|
Hmm. Just about every car built in the last decade or two has OV & load dump protection hard wired into either their regulator or their computer, if the computer regulates the alternator (getting more common these days). Does that affect the ability to gather data on the device?
Charlie
 Virus-free.www.avast.com[url=#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2][/url]
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nuckolls.bob(at)aeroelect
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| Posted: Sat Feb 10, 2024 6:38 pm Post subject: OVM-14 MkIII |
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At 10:15 AM 2/10/2024, you wrote:
| Quote: | snipped
 By using cars for the field test platforms,
 we'll be able to secure a lot more
 information than if first articles
 went directly to airplanes.
 Bob . . .
Hmm. Just about every car built in the last decade or two has OV & load dump protection hard wired into either their regulator or their computer, if the computer regulates the alternator (getting more common these days). Does that affect the ability to gather data on the device? |
Excellent question! Throughout the 30 or so
year history of the OVM project, difficulties
in the field NEVER involved a failure to respond
to an OV event . . . at least if one did, I
was not made privy to it. All of our products
have a lifetime warranty:
https://matronics.com/aeroelectric/Catalog/warranty.html
Difficulties I was aware of involved nuisance
tripping in both my production units and similarly
configured OV management features in B&C products.
Some DIY'ers had difficulties too which became
the rotten tomato ammunition for some of the
more vociferous antagonists here on the List.
Root cause for those event were discovered
and resolved. So what we're looking
for with this new version is unwarranted
sensitivity to normal perturbations
in DC power system bus voltage . . . generated
by the operation of vehicle accessories
of all stripe.
Based on what we've learned over the years,
I think the current design will not suffer
the same shortcomings.
But if there ARE 'rats' in the current
logic, I'd be delighted if we could chase
'em out early! Yeah, modern automotive
designs do manage the 'dragons' quite
well but put a 'scope on your car's
bus some time . . . it's as trashy
as the one in your airplane.
Bob . . .
////
(o o)
===========o00o=(_)=o00o=========
< Go ahead, make my day . . . >
< show me where I'm wrong. >
=================================
In the interest of creative evolution
of the-best-we-know-how-to-do based
on physics and good practice.
| | - The Matronics AeroElectric-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?AeroElectric-List |
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alfuller194(at)gmail.com
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| Posted: Mon Feb 12, 2024 7:55 pm Post subject: OVM-14 MkIII |
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I'll test one. I can put it in a mid-60s car that has been converted to negative ground.
________________
Best Regards,
Al Fuller
On Sat, Feb 10, 2024, 6:10 AM Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
| Quote: | At 12:23 AM 2/10/2024, you wrote:
| Quote: | Hello Bob,
Are you looking for testers for the prototypes? |
 I've had numerous volunteers to be
 'beta testers' of the new ovm.
 Performance testing will be carried
 out in my shop with respect to confirming
 'the numbers' and stability of those
 numbers under temperature extremes.
 Field tests will explore possible
 vulnerability to un-anticipated
 conditions in functional dc power
 systems.
 They won't even need to be actively
 guarding against failure of a regulator/
 alternator installation.
 I'll install 'em on two of my own
 vehicles to simply 'watch the bus
 thru a 5A breaker'. With the
 ovm in the cabin and by means of
 the functional verification feature,
 I can exercise the critters every
 time the engine is started . . .
 while watching for vulnerabilities
 to noise in the 'normal' mode.
 So yeah, I'd be interested in having
 a few of these little guys similarly
 exercised in more vehicles.
 Once we're reasonably satisfied
 with this field qualification experiment,
 'test articles' will remain property
 of the tester to be installed in
 their project as needed.
 By using cars for the field test platforms,
 we'll be able to secure a lot more
 information than if first articles
 went directly to airplanes.
 Bob . . .
                  ////
                 (o o)
  ===========o00o=(_)=o00o=========
  < Go ahead, make my day . . .  >
  < show me where I'm wrong.     >
  =================================
Â
  In the interest of creative evolution
  of the-best-we-know-how-to-do based
  on physics and good practice.
|
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http://www.matronics.com/Navigator?AeroElectric-List |
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