Today's Message Index:
----------------------
1. 06:51 AM - Re: Switch Selection (Robert L. Nuckolls, III)
2. 07:59 AM - Re: Switch Selection ()
3. 08:23 AM - Re: Switch Selection (John Grosse)
4. 09:05 AM - Re: Switch Selection ()
5. 09:48 AM - HD pin crimp adapter (Kenneth Melvin)
6. 12:22 PM - Re: HD pin crimp adapter (Robert L. Nuckolls, III)
7. 12:32 PM - Re: Switch Selection (Robert L. Nuckolls, III)
8. 01:10 PM - Re: Switch Selection ()
9. 07:01 PM - Re: Switch Selection (Robert L. Nuckolls, III)
Message 1
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| Subject: | Re: Switch Selection |
At 09:27 PM 3/20/2011, you wrote:
>All,
>
>I have a EI that I want to provide power to from two sources (main
>battery and alt battery).
why?
>Would using a 1-3 switch be ok for this application? ON-OFF-ON
yes
>I'm thinking...
>
>Terminal 1 - From Batt Bus (Primary)
>
>Terminal 2 - EI Lead (grounded separately)
>
>Terminal 3 - From alternate Battery. (Emergency)
If you've got a well maintained and failure
tolerant system, you won't have an electrical
'emergency'.
Under what conceivable scenario do you believe
you're going to loose the main battery as a
source of ignition system power?
Bob . . .
Message 2
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| Subject: | Switch Selection |
Bob,
This would happen is if the battery connection became loose, the 5 amp
panel breaker switch failed, the switch wire comes loose behind the
panel or it blows my inline 20 AMP fuse (near the battery) that I have
in front of the 5 amp breaker switch which protects the line from major
overload. The alternate battery concept is a suggested design from
Lightspeed. There needs to be a way to switch between the two. Naturally
if there is any break in electrical power, the EI goes away immediately
and you're in instant do-do.
If the Lightspeed were really well designed it would sense a loss of
power go directly to backup power and alert the driver to the fact. This
is not the case. If on take-off my breaker switch decides to give up the
ghost, I've just lost 1 EI. Paranoid? Maybe, but it does happen.
Yesterday, the switch I used to change between normal battery power and
backup battery power died just as I was beginning my run-up. Glad that
happened on the ground and not at 50 feet above the ground. If flying at
altitude I could have easily switched to backup power and everything
would have went along fine (assuming the switch is OK). So bottom line
is that any loss of power and you lose a very critical component. I'm
not talking here about losing a light or a radio or whatever (they don't
make the engine run).
Glenn E. Long
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Robert L. Nuckolls, III
Sent: Monday, March 21, 2011 8:46 AM
Subject: Re: AeroElectric-List: Switch Selection
<nuckolls.bob@aeroelectric.com>
At 09:27 PM 3/20/2011, you wrote:
>All,
>
>I have a EI that I want to provide power to from two sources (main
>battery and alt battery).
why?
>Would using a 1-3 switch be ok for this application? ON-OFF-ON
yes
>I'm thinking...
>
>Terminal 1 - From Batt Bus (Primary)
>
>Terminal 2 - EI Lead (grounded separately)
>
>Terminal 3 - From alternate Battery. (Emergency)
If you've got a well maintained and failure
tolerant system, you won't have an electrical
'emergency'.
Under what conceivable scenario do you believe
you're going to loose the main battery as a
source of ignition system power?
Bob . . .
Message 3
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| Subject: | Re: Switch Selection |
Which is exactly why I said you don't want ONE switch. Give each battery
its own switch.
John Grosse
> ------------------------------------------------------------------------
>
> longg@pjm.com <mailto:longg@pjm.com>
> March 21, 2011 9:55 AM
>
>
> --> AeroElectric-List message posted by:<longg@pjm.com>
>
> Bob,
>
> Yesterday, the switch I used to change between normal battery power and
> backup battery power died just as I was beginning my run-up.
>
> Glenn E. Long
>
Message 4
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| Subject: | Switch Selection |
Thanks John,
Sorry, I missed your earlier comment somewhere. Yes, that would be a
more secure/separable option. I'm open to good ideas and not afraid to
change for the better. I'm also a bit tired of paying good money for
switches that offer lots of capability but later fail as a result of it.
Single pole is simple and usually works - even if it means a few more
switches.
Glenn E. Long
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of John
Grosse
Sent: Monday, March 21, 2011 11:18 AM
Subject: Re: AeroElectric-List: Switch Selection
<grosseair@comcast.net>
Which is exactly why I said you don't want ONE switch. Give each battery
its own switch.
John Grosse
>
------------------------------------------------------------------------
>
> longg@pjm.com <mailto:longg@pjm.com>
> March 21, 2011 9:55 AM
>
>
> --> AeroElectric-List message posted by:<longg@pjm.com>
>
> Bob,
>
> Yesterday, the switch I used to change between normal battery power
and
> backup battery power died just as I was beginning my run-up.
>
> Glenn E. Long
>
Message 5
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| Subject: | HD pin crimp adapter |
Bob, I have just received your adapter for the HD pin crimp, and need guidance
as to how to use it. I have the pre-calibrated d-sub crimper from you, an Astro,
and a Buchanan crimper. I can send a photo of the three if it would help, but
would need your email address for that.
Yours,
Kenneth
Message 6
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| Subject: | Re: HD pin crimp adapter |
At 12:44 PM 3/21/2011, you wrote:
>
>Bob, I have just received your adapter for the HD pin crimp, and
>need guidance as to how to use it. I have the pre-calibrated d-sub
>crimper from you, an Astro, and a Buchanan crimper. I can send a
>photo of the three if it would help, but would need your email
>address for that.
You unscrew the silver cap on the back side
of the crimper. Under this cap you'll find a
spring and a positioner for the 20AWG pins.
Remove replace the 20AWG positioner with the
22HD positioner. Put the cap and spring back
in place and you're ready to go with the
smaller pins.
Bob . . .
Message 7
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| Subject: | Switch Selection |
At 10:55 AM 3/21/2011, you wrote:
<snip>
>If the Lightspeed were really well designed it would sense a loss of
>power go directly to backup power and alert the driver to the fact.
Refresh my memory. What's your engine/ignition setup
for this airplane. Is the LSI system the only ignition
system for the engine?
Bob . . .
Message 8
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| Subject: | Switch Selection |
Bob,
I had dual LSI but removed one in favor of one MAG. So, one LSI and one
mag.
Thanks
Glenn E. Long
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Robert L. Nuckolls, III
Sent: Monday, March 21, 2011 2:28 PM
Subject: RE: AeroElectric-List: Switch Selection
<nuckolls.bob@aeroelectric.com>
At 10:55 AM 3/21/2011, you wrote:
<snip>
>If the Lightspeed were really well designed it would sense a loss of
>power go directly to backup power and alert the driver to the fact.
Refresh my memory. What's your engine/ignition setup
for this airplane. Is the LSI system the only ignition
system for the engine?
Bob . . .
Message 9
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| Subject: | Switch Selection |
At 04:02 PM 3/21/2011, you wrote:
>
>Bob,
>
>I had dual LSI but removed one in favor of one MAG. So, one LSI and one
>mag.
>
>Thanks
Okay, you got two ignition systems. Why
the great concerns for keeping the electronic
one running?
You cited potential for a lot of things to
get unhooked or otherwise become unusable.
My best advice is keep it as simple as possible
and take good care of it.
Sometimes the best way to drive a nail
is with a hammer. No batteries, no moving
parts, works in the worst of weather
conditions and it will still be functional
after we're all gone.
I just cleaned up one of dad's old hammers.
Brightened up the head, sanded and oiled the
handle and put a piece of heat shrink over it
to tie down the splinters . . . good for another
60 years.
Bob . . .
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