Today's Message Index:
----------------------
1. 09:28 AM - TE KILOVAC LEV100 Question (Hariharan Gopalan)
2. 05:01 PM - Re: TE KILOVAC LEV100 Question (Robert L. Nuckolls, III)
3. 05:04 PM - Re: Troubleshooting 200G/ Z-17 (Robert L. Nuckolls, III)
4. 05:26 PM - Service loop length (Art Zemon)
5. 07:04 PM - Re: Service loop length (Charlie England)
6. 08:29 PM - Re: Service loop length (Robert L. Nuckolls, III)
Message 1
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| Subject: | TE KILOVAC LEV100 Question |
Hello Group!
Quick question about the TE LEV100A4ANG contactors, these have two
terminals marked A1 and A2, wonder if any one has used these and if there
is a preference to use A1 or A2 for supply or load side? Tried calling TE
support, but havent heard back from them yet.
Also, is it recommended to use the diodes with these contactors for TV
suppression?
Thanks
Hari
Message 2
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| Subject: | Re: TE KILOVAC LEV100 Question |
At 11:26 AM 9/7/2017, you wrote:
>Hello Group!
>
>Quick question about the TE LEV100A4ANG contactors, these have two
>terminals marked A1 and A2, wonder if any one has used these and if
>there is a preference to use A1 or A2 for supply or load side? Tried
>calling TE support, but havent heard back from them yet.
>
>Also, is it recommended to use the diodes with these contactors for
>TV suppression?
A1 and A2 are interchangeable.
Diode is suggested. The data sheet for
this product excerpts as follows:
Emacs!
A 12 V across 26 ohms is .46 amps.
This tells us that unlike some products
of this genre', there is no consumption
mitigation electronics for the coil power.
Hence, a 'barefoot' solenoid winding.
Any diode will work. I like the 1N540x
series devices for their mechanical robustness.
Bob . . .
Message 3
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| Subject: | Re: Troubleshooting 200G/ Z-17 |
At 07:58 PM 9/6/2017, you wrote:
>No worries Bob and thanks. We're all still learning about this new
>LiFePo stuff.
>
>Talking with Nathan B at Oshkosh he said he was working on a new
>regulator design for the PM alternators (might be what you're
>working on.) I offered to be a beta tester as I have a data
>recording engine monitor and could possibly gather some useful
>data. I have data from my last 5 hours that I can provide if you
>think it would be of any value. It's interesting to look at the
>voltage rise vs. RPM. There is even a slight rise during runup that
>I didn't notice while running up, but is clear from the data.
>
>Jeff
Absolutely! Thank you. I'll have a bench-test
article that will not be mechanically pure to
the production drawings but electronically
identical and air worthy. I'd be pleased to
exploit your offer.
Bob . . .
Message 4
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| Subject: | Service loop length |
See attached photo.
For the wires running between radios in my radio stack, how much service
loop do I need, 12"-ish? Less? Never having had to work behind the panel of
a plane, I could use your thoughts.
Thanks,
-- Art Z.
Sent from my phone. Please excuse brevity and bizarre typos.
Message 5
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| Subject: | Re: Service loop length |
On 9/7/2017 7:24 PM, Art Zemon wrote:
> See attached photo.
> For the wires running between radios in my radio stack, how much
> service loop do I need, 12"-ish? Less? Never having had to work behind
> the panel of a plane, I could use your thoughts.
>
> Thanks,
> -- Art Z.
>
> Sent from my phone. Please excuse brevity and bizarre typos.
When you have to, you're not going to like it. Sit in the cockpit & try
to imagine what you'll do when you're trying to troubleshoot the one in
the middle of the stack.
I left enough service loop(s) length to sit the panel on the spar (low
wing), face down.
Charlie
---
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Message 6
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| Subject: | Re: Service loop length |
At 09:06 PM 9/7/2017, you wrote:
>England <ceengland7@gmail.com>
>
>On 9/7/2017 7:24 PM, Art Zemon wrote:
>>See attached photo.
>>For the wires running between radios in my
>>radio stack, how much service loop do I need,
>>12"-ish? Less? Never having had to work behind
>>the panel of a plane, I could use your thoughts.
>>
>>Thanks,
>>=C2 =C2 =C2 -- Art Z.
>>
>>Sent from my phone. Please excuse brevity and bizarre typos.
>When you have to, you're not going to like it.
>Sit in the cockpit & try to imagine what you'll
>do when you're trying to troubleshoot the one in the middle of the stack.
>
>I left enough service loop(s) length to sit the
>panel on the spar (low wing), face down.
Did a design study with some guys at Lear
to produce one of Leon Davis's 'mini bonanzas'
a DA5 if memory serves.
We designed a radio module that would hold all
the radios that was held into the panel with
6 screws. Take out those screws and all
the radios came out together with the interface
harness terminated in a D-sub. One could take
the whole thing to the bench . . . or use an
extension harness to operate the radios out
of the panel.
This approach let us take proposals from various
suppliers or hardware to build the complete
stack with only the airplane interface wiring
dangling off the back.
Installation time on the assembly line was under
40 minutes for the whole avionics package.
Bob . . .
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