Today's Message Index:
----------------------
1. 07:33 AM - Re: Ammeter help (Robert L. Nuckolls, III)
2. 07:37 AM - Re: Ammeter help (oops . . . bad URL) (Robert L. Nuckolls, III)
3. 07:57 AM - 120 volt connectors (bob noffs)
4. 09:00 AM - Re: 120 volt connectors (Bill Boyd)
5. 10:07 AM - GRT MFD For Sale (Scott)
6. 12:05 PM - Re: Ammeter help (John Burnaby)
7. 01:01 PM - Re: 120 volt connectors (Robert L. Nuckolls, III)
8. 01:04 PM - Re: Ammeter help (Robert L. Nuckolls, III)
9. 01:43 PM - Re: 120 volt connectors (bob noffs)
10. 06:02 PM - dual battery charging (James Robinson)
11. 06:03 PM - Re: 120 volt connectors (Charlie England)
12. 06:58 PM - Re: dual battery charging (Robert L. Nuckolls, III)
13. 07:03 PM - Re: 120 volt connectors (Robert L. Nuckolls, III)
Message 1
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| Subject: | Re: Ammeter help |
At 01:18 AM 12/20/2009, you wrote:
>Folks;
>Looking for some help in locating an ammeter installation kit of
>some sort, similar to B&C AEC9035-1 (discontinued). Ideally, it
>would have a current sensor such as a Tamura L08P050D15 (50 amp or a
>little smaller) with the required signal processing built in and
>come with an edgewise 50-0-50 (or 30-0-30) analog panel meter. I was
>surprised there was not something already made up (or at least
>easier to find) as I would think there would be a market for it. All
>help greatly appreciated. Thanks in advance.
>
>-- Keith
>
>
The AEC9035 was a proposed project that never
made it to the market. Too complex and too expensive
to build for the value delivered. Battery ammeters
are of limited utility and require a higher level
of understanding to be as useful as a simple LV
warning light and perhaps alternator load-meters.
In a system that's designed with attention to failure
mode effects analysis and complimented by (Plans-B
for critical failures), the ammeter offers no
useful data for operating the airplane. Its most
powerful function is as a diagnostics tool.
Hence, the market is small. We do offer a customized
kit for the installation of load meters on one
or dual alternator systems. These use the simple,
stable, accurate metallic shunts and simple, low
cost, pivot and jewel, d'Arsonval meters . . .
Emacs!
See:
https://matronics.com/aeroelectric/Catalog/AEC/9007/9007.html
This approach proved the most elegant for ruggedness,
stability of calibration and cost of ownership when
the builder desires a panel display of current.
Bob . . .
Message 2
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| Subject: | Re: Ammeter help (oops . . . bad URL) |
At 01:18 AM 12/20/2009, you wrote:
>Folks;
>Looking for some help in locating an ammeter installation kit of
>some sort, similar to B&C AEC9035-1 (discontinued). Ideally, it
>would have a current sensor such as a Tamura L08P050D15 (50 amp or a
>little smaller) with the required signal processing built in and
>come with an edgewise 50-0-50 (or 30-0-30) analog panel meter. I was
>surprised there was not something already made up (or at least
>easier to find) as I would think there would be a market for it. All
>help greatly appreciated. Thanks in advance.
>
>-- Keith
>
The AEC9035 was a proposed project that never
made it to the market. Too complex and too expensive
to build for the value delivered. Battery ammeters
are of limited utility and require a higher level
of understanding to be as useful as a simple LV
warning light and perhaps alternator load-meters.
In a system that's designed with attention to failure
mode effects analysis and complimented by (Plans-B
for critical failures), the ammeter offers no
useful data for operating the airplane. Its most
powerful function is as a diagnostics tool.
Hence, the market is small. We do offer a customized
kit for the installation of load meters on one
or dual alternator systems. These use the simple,
stable, accurate metallic shunts and simple, low
cost, pivot and jewel, d'Arsonval meters . . .
Emacs!
See THE RIGHT LINKAGE here:
http://aeroelectric.com/Catalog/AEC/9007/9007.html
This approach proved the most elegant for ruggedness,
stability of calibration and cost of ownership when
the builder desires a panel display of current.
Bob . . .
Message 3
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| Subject: | 120 volt connectors |
hi all,
i am making up a wiring harness for silicon pad heaters for my jab. 6
heaters at 50-100 watts each. i would like to use a connector for each pad
lead . any suggestions for a 120 volt set up like this?
bob noffs
Message 4
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| Subject: | Re: 120 volt connectors |
Wow. 2-minutes from plug-in to oil temps in the green, eh? 600 watts ought
to get you there!
I have been planning to use a computer power supply cord and cannibalized AC
chassis socket in the side of my cowl for this job, but have never gotten
around to it. Aversion to fiberglass work set in shortly after I got her
flying a decade ago ;-)
Bill Boyd RV-6A
On Sun, Dec 20, 2009 at 10:27 AM, bob noffs <icubob@gmail.com> wrote:
> hi all,
> i am making up a wiring harness for silicon pad heaters for my jab. 6
> heaters at 50-100 watts each. i would like to use a connector for each pad
> lead . any suggestions for a 120 volt set up like this?
> bob noffs
>
> *
>
> *
>
>
Message 5
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| Subject: | GRT MFD For Sale |
For Sale: Display only, Like New, Grand Rapids Technologies, Standard
Resolution, Horizon Series One.
Display has less than one hour of operation and is in excellent
condition.
A new display from GRT is $2,000 -- will let mine go for $1,250.
See http://www.grtavionics.com/product.aspx?productno=1&featureno=4
for information and screen shots.
Contact: Scott Fifield
927 Shoshone Street
Strasburg, CO 80136
scott428@tds.net
(303) 622-6868 Home
Do Not Archive
Message 6
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| Subject: | Re: Ammeter help |
Keith,
This is a very tidy, versatile unit at an attractive price. Check out
the user manual.
http://www.aircraftdigital.com/DIGITAL_AMMETER.html
Message 7
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| Subject: | Re: 120 volt connectors |
At 10:15 AM 12/20/2009, you wrote:
>Wow. 2-minutes from plug-in to oil temps in the green, eh? 600
>watts ought to get you there!
>
>I have been planning to use a computer power supply cord and
>cannibalized AC chassis socket in the side of my cowl for this job,
>but have never gotten around to it. Aversion to fiberglass work set
>in shortly after I got her flying a decade ago ;-)
>
>Bill Boyd RV-6A
>
>On Sun, Dec 20, 2009 at 10:27 AM, bob noffs
><<mailto:icubob@gmail.com>icubob@gmail.com> wrote:
>hi all,
> i am making up a wiring harness for silicon pad heaters for my
> jab. 6 heaters at 50-100 watts each. i would like to use a
> connector for each pad lead . any suggestions for a 120 volt set up like this?
How about knife-splices with heat-shrink covers for
harness work under the cowl. See:
http://aeroelectric.com/Pictures/Terminals/ksplc2.jpg
Bill's suggestion for a detachable line cord is sound.
You can salvage a recessed chassis mount male connector
from about any old piece of computing hardware. One
of my customers on 1K1 did the same thing. His heater
connector was accessible through the oil filler door
on top of the cowl.
Bob . . .
Message 8
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| Subject: | Re: Ammeter help |
At 02:02 PM 12/20/2009, you wrote:
>Keith,
>
>
>This is a very tidy, versatile unit at an attractive price. Check
>out the user manual.
>
><http://www.aircraftdigital.com/DIGITAL_AMMETER.html>http://www.aircraftdigital.com/DIGITAL_AMMETER.html
I've seen this (or similar) instruments used
as a loadmeter. You set it up to read a 100A
shunt (50mv = 100.0) and then size the shunt
to the full scale value of alternator. A little
label over the AMPS nomenclature to read LOAD
allows the single instrument to be switched to
multiple systems.
Bob . . .
Message 9
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| Subject: | Re: 120 volt connectors |
i guess my question wasn.t clear. i am concerned about what type of radio
shack connector will be acceptable for 120 volts where each heatpad lead
connects to the ''main'' lead. i would see the ''main lead'' wired into the
ac chassis socket.
bob noffs
On Sun, Dec 20, 2009 at 2:59 PM, Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 10:15 AM 12/20/2009, you wrote:
>
> Wow. 2-minutes from plug-in to oil temps in the green, eh? 600 watts ought
> to get you there!
>
> I have been planning to use a computer power supply cord and cannibalized
> AC chassis socket in the side of my cowl for this job, but have never gotten
> around to it. Aversion to fiberglass work set in shortly after I got her
> flying a decade ago ;-)
>
> Bill Boyd RV-6A
>
> On Sun, Dec 20, 2009 at 10:27 AM, bob noffs <icubob@gmail.com> wrote:
> hi all,
> i am making up a wiring harness for silicon pad heaters for my jab. 6
> heaters at 50-100 watts each. i would like to use a connector for each pad
> lead . any suggestions for a 120 volt set up like this?
>
>
> How about knife-splices with heat-shrink covers for
> harness work under the cowl. See:
>
> http://aeroelectric.com/Pictures/Terminals/ksplc2.jpg
>
> Bill's suggestion for a detachable line cord is sound.
> You can salvage a recessed chassis mount male connector
> from about any old piece of computing hardware. One
> of my customers on 1K1 did the same thing. His heater
> connector was accessible through the oil filler door
> on top of the cowl.
>
> Bob . . .
>
> *
>
>
> *
>
>
Message 10
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| Subject: | dual battery charging |
I have a dual battery system in my Glasair. Is there an easy way to charge both
battery simultaneously. I do have a Xconnect switch to connect both systems
if necessary. Could that be used to charge both batteries at the same time?
Jim
James Robinson
Glasairlll N79R
Spanish Fork UT U77
Message 11
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| Subject: | Re: 120 volt connectors |
On 12/20/2009 3:41 PM, bob noffs wrote:
> i guess my question wasn.t clear. i am concerned about what type of
> radio shack connector will be acceptable for 120 volts where each
> heatpad lead connects to the ''main'' lead. i would see the ''main
> lead'' wired into the ac chassis socket.
> bob noffs
>
> On Sun, Dec 20, 2009 at 2:59 PM, Robert L. Nuckolls, III
> <nuckolls.bob@aeroelectric.com <mailto:nuckolls.bob@aeroelectric.com>>
> wrote:
>
> At 10:15 AM 12/20/2009, you wrote:
>> Wow. 2-minutes from plug-in to oil temps in the green, eh? 600
>> watts ought to get you there!
>>
>> I have been planning to use a computer power supply cord and
>> cannibalized AC chassis socket in the side of my cowl for this
>> job, but have never gotten around to it. Aversion to fiberglass
>> work set in shortly after I got her flying a decade ago ;-)
>>
>> Bill Boyd RV-6A
>>
>> On Sun, Dec 20, 2009 at 10:27 AM, bob noffs <icubob@gmail.com
>> <mailto:icubob@gmail.com>> wrote:
>>
>> hi all,
>> i am making up a wiring harness for silicon pad heaters for
>> my jab. 6 heaters at 50-100 watts each. i would like to use a
>> connector for each pad lead . any suggestions for a 120 volt
>> set up like this?
>>
>
> How about knife-splices with heat-shrink covers for
> harness work under the cowl. See:
>
> http://aeroelectric.com/Pictures/Terminals/ksplc2.jpg
>
> Bill's suggestion for a detachable line cord is sound.
> You can salvage a recessed chassis mount male connector
> from about any old piece of computing hardware. One
> of my customers on 1K1 did the same thing. His heater
> connector was accessible through the oil filler door
> on top of the cowl.
>
> Bob . . .
>
Boy, it sure is hard to follow a conversation in RPN.... :-)
PIDG connectors (or solder) should be good if you weatherproof the
container where you join all the cables. If you want to plug in each
heater to a box, I'd think about salvaging some modern under-hood
automotive connectors for their moisture protection value. It's hard to
believe that 120 V would be a problem on any modern insulation.
A thought on the actual primary connector. It might be a good idea to
use a 'standard' chassis mount or pigtail AC connector (available online
or at any good electrical supply house) instead of a computer power
connector, if you ever expect to pre-heat away from home. That way, most
any extension cord should plug in. Unlikely that you would find a spare
computer cord at the airport in East Podunk.
Charlie
Message 12
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| Subject: | Re: dual battery charging |
At 07:57 PM 12/20/2009, you wrote:
>I have a dual battery system in my Glasair. Is there an easy way to
>charge both battery simultaneously. I do have a Xconnect switch to
>connect both systems if necessary. Could that be used to charge
>both batteries at the same time?
>Jim
See:
http://www.aeroelectric.com/articles/Batteries/Multiple_Battery_Myths_A.pdf
and figure Z-30 at:
http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z29K_30K.pdf
Bob . . .
Message 13
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| Subject: | Re: 120 volt connectors |
At 03:41 PM 12/20/2009, you wrote:
>i guess my question wasn.t clear. i am concerned about what type of
>radio shack connector will be acceptable for 120 volts where each
>heatpad lead connects to the ''main'' lead. i would see the ''main
>lead'' wired into the ac chassis socket.
"Acceptable" is a hard term to define. The concerns
for any wiring that carries a lot of voltage and
supplied from an energetic source (15A or better
breaker) is integrity of the connections. When
folks wire such devices in houses, they're either
spliced permanently and independently insulated
or semi-permanent connection (wire nut, screw clamp,
etc) inside a suitable enclosure.
The knife splices are as close as you can get to
permanent and still open the joints for maintenance.
Soldered splices under heat shrink would be the
most "acceptable" in terms of mechanical robustness.
If you're prepared to live with anything less, then
about any connector in the catalog will do.
Bob . . .
>\
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